NASA’s X-59 quiet supersonic research aircraft taxis across the runway during a low-speed taxi test at U.S. Air Force Plant 42 in Palmdale, California, on July 10, 2025. The test marks the start of taxi tests and the last series of ground tests before first flight.

NASA’s X-59 quiet supersonic research aircraft taxis across the runway during a low-speed taxi test at U.S. Air Force Plant 42 in Palmdale, California, on July 10, 2025. The test marks the start of taxi tests and the last series of ground tests before first flight.

An aircraft body modeled after an air taxi with weighted test dummies inside is shown after a drop test at NASA’s Langley Research Center in Hampton, Virginia. The test was completed June 26 at Langley’s Landing and Impact Research Facility. The aircraft was dropped from a tall steel structure, known as a gantry, after being hoisted about 35 feet in the air by cables. NASA researchers are investigating aircraft materials that best absorb impact forces in a crash.

An aircraft body modeled after an air taxi with weighted test dummies inside is being prepared for a drop test by researchers at NASA’s Langley Research Center in Hampton, Virginia. The test was completed June 26 at Langley’s Landing and Impact Research Facility. The aircraft was dropped from a tall steel structure, known as a gantry, after being hoisted about 35 feet in the air by cables. NASA researchers are investigating aircraft materials that best absorb impact forces in a crash.

An aircraft body modeled after an air taxi with weighted test dummies inside is hoisted about 35 feet in the air by cables at NASA’s Langley Research Center in Hampton, Virginia. The aircraft was dropped from a tall steel structure, known as a gantry, on June 26 at Langley’s Landing and Impact Research Facility. NASA researchers are investigating aircraft materials that best absorb impact forces in a crash.

Saré Culbertson, NASA Pathways intern at NASA’s Armstrong Flight Research Center in Edwards, California, adjusts the Emlid Reach RS2+ receiver equipment that connects with GPS and global navigation satellite systems on Nov. 7, 2024, in preparation for future air taxi test flight research.

NASA’s X-59 quiet supersonic research aircraft moves under its own power for the first time at Lockheed Martin’s Skunk Works facility in Palmdale, California, on July 10, 2025. Guided by the aircraft’s crew chief, the event marks the beginning of taxi tests – a key milestone and the final series of ground tests before first flight.

NASA’s X-59 quiet supersonic research aircraft moves under its own power for the first time at Lockheed Martin’s Skunk Works facility in Palmdale, California, on July 10, 2025. Guided by the aircraft’s crew chief, the event marks the beginning of taxi tests – a key milestone and the final series of ground tests before first flight.

UH-60 Taxi and Hover Test for MUX Bucket 1 (RDAS 1)

Working in the Mobile Operations Facility at NASA’s Armstrong Flight Research Center in Edwards, California, NASA Advanced Air Mobility researcher Dennis Iannicca adjusts a control board to capture Automatic Dependent Surveillance-Broadcast (ADS-B) data during test flights. The data will be used to understand ADS-B signal loss scenarios for air taxi flights in urban areas.

NASA test pilot Wayne Ringelberg sits in the air taxi virtual reality flight simulator during a test at NASA’s Armstrong Flight Research Center in Edwards, California in March 2024.

NASA researchers Curt Hanson (background) and Saravanakumaar Ramia (foreground) control the air taxi virtual reality flight simulator from computers during a test at NASA’s Armstrong Flight Research Center in Edwards, California in March 2024.

Curt Hanson, senior flight controls researcher for the Revolutionary Vertical Lift Technology project based at NASA’s Armstrong Flight Research Center in Edwards, California, explains the study about to begin to NASA employee and test subject Naomi Torres on Oct. 23, 2024. Behind them is the air taxi passenger ride quality simulator in NASA Armstrong’s Ride Quality Laboratory. Studies continue to better understand passenger comfort for future air taxi rides.

The X-57 Mod II wing is rejoined with the aircraft's fuselage to begin preparations for reintegration at NASA's Armstrong Flight Research Center in California. Once the integration work is complete, it will begin ground tests to be followed by taxi tests, and eventually, flight tests.

NASA test pilot Wayne Ringelberg and NASA researcher Kyle Barnes prepare for Ringelberg’s ride in the air taxi virtual reality flight simulator during a test at NASA’s Armstrong Flight Research Center in Edwards, California in March 2024.

The Perseus B remotely piloted aircraft taxis on the runway at Edwards Air Force Base, California, before a series of development flights at NASA's Dryden flight Research Center. The Perseus B is the latest of three versions of the Perseus design developed by Aurora Flight Sciences under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program.

The Perseus B remotely piloted aircraft on the runway at Edwards Air Force Base, California at the conclusion of a development flight at NASA's Dryden flight Research Center. The Perseus B is the latest of three versions of the Perseus design developed by Aurora Flight Sciences under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program.

NASA operations engineer Daniel Velasquez, left, is reviewing the Mobile Vertipad Sensor Package system as part of the Air Mobility Pathways test project at NASA's Armstrong Flight Research Center in Edwards, California on October 17, 2023. The portable system allows Advanced Air Mobility researchers to test and evaluate several factors involved in monitoring takeoff and landing conditions at vertipad sites. "Vertipads" or "vertiports" will be where future air taxis will land and take off to transport passengers.

NASA operations engineer Daniel Velasquez, left, is reviewing the Mobile Vertipad Sensor Package system as part of the Air Mobility Pathways test project at NASA's Armstrong Flight Research Center in Edwards, California on October 17, 2023. The portable system allows Advanced Air Mobility researchers to test and evaluate several factors involved in monitoring takeoff and landing conditions at vertipad sites. "Vertipads" or "vertiports" will be where future air taxis will land and take off to transport passengers.

The X-57 operations crew at NASA's Armstrong Flight Research Center prepare for telemetry testing on NASA's first all-electric X-plane, the X-57 Maxwell. Shown here in its first all-electric configuration, known as Mod II, X-57's series of functional tests helps engineers confirm that the vehicle will be ready for taxi and flight tests, and the telemetry testing confirms the ability of the aircraft to transmit location and test data to the ground. X-57 will help set certification standards for emerging electric aircraft markets.

The X-57 operations crew at NASA's Armstrong Flight Research Center prepare for telemetry testing on NASA's first all-electric X-plane, the X-57 Maxwell. Shown here in its first all-electric configuration, known as Mod II, X-57's series of functional tests helps engineers confirm that the vehicle will be ready for taxi and flight tests, and the telemetry testing confirms the ability of the aircraft to transmit location and test data to the ground. X-57 will help set certification standards for emerging electric aircraft markets.

NASA researcher A.J. Jaffe prepares the NASA Airborne Instrumentation for Real-world Video of Urban Environments (AIRVUE) sensor pod for testing at NASA’s Kennedy Space Center in Cape Canaveral, Florida in April 2024. The AIRVUE pod will be used to collect data for autonomous aircraft like air taxis, drones, or other Advanced Air Mobility aircraft.

NASA Armstrong Flight Research Center test pilots Jim "Clue" Less (front) and Wayne "Ringo" Ringelberg (back) taxi out in a NASA F/A-18 at Ellington Field in Houston, Texas, in preparation of a training flight for the Quiet Supersonic Flights 2018 series, or QSF18. The QSF18 flights will provide NASA with feedback necessary to validate community response techniques for future quiet supersonic research flights for the X-59 Quiet SuperSonic Technology, or QueSST.

NASA Pathways intern Saré Culbertson, right, works with NASA operations engineer Jack Hayes at NASA’s Armstrong Flight Research Center in Edwards, California, on Nov. 7, 2024. They are verifying GPS and global navigation satellite system coordinates using Emlid Reach RS2+ receiver equipment, which supports surveying, mapping, and navigation in preparation for future air taxi test flight research.

Flight Research Inc.’s Bell OH-58C Kiowa helicopter takes off from a research helipad at NASA’s Armstrong Flight Research Center in California in March 2021. The Advanced Air Mobility National Campaign project utilized several heliports and vertiports to study airspace management evolutions that could enable future urban air mobility operations. Tests were conducted during build II where this helicopter was used as a surrogate urban air mobility or air taxi vehicle.

Test pilot Milton Thompson sitting in NASA Flight Research Center-built Paresev 1 (Paraglider Research Vehicle) on the taxi strip in front of the NASA Flight Research Center in 1962. In this photo the control stick can be seen coming from overhead and hanging in front of the pilot. The control system was a direct link with the wing membrane made of doped Irish linen. By maintaining simplicity during construction, it was possible to make control and configuration changes overnight and, in many instances, in minutes.

The NASA Airborne Instrumentation for Real-world Video of Urban Environments (AIRVUE) sensor pod is attached to the base of a NASA helicopter at NASA’s Kennedy Space Center in Cape Canaveral, Florida in April 2024 before a flight to test the pod’s cameras and sensors. The AIRVUE pod will be used to collect data for autonomous aircraft like air taxis, drones, or other Advanced Air Mobility aircraft.

Flight Research Inc.'s Bell OH-58C Kiowa helicopter departs the leeward heliport at NASA's Armstrong Flight Research Center in California in March 2021. The Advanced Air Mobility National Campaign project studied wind and structure interactions as part of a second phase of testing called build II. This helicopter was used as a surrogate urban air mobility or air taxi vehicle.

KENNEDY SPACE CENTER, FLA. - The plane carrying the crew of mission STS-121 taxis onto the Shuttle Landing Facility at NASA's Kennedy Space Center. The crew was at the Center for a three-day series of Terminal Countdown Demonstration Test (TCDT) activities. The TCDT includes equipment familiarization, emergency egress training and a simulated launch countdown. Mission STS-121 is scheduled to launch July 1. Photo credit: NASA/Kim Shiflett

NASA researchers Elizabeth Nail (foreground) and A.J. Jaffe (background) prepare the NASA Airborne Instrumentation for Real-world Video of Urban Environments (AIRVUE) sensor pod for testing at NASA’s Kennedy Space Center in Cape Canaveral, Florida in April 2024. The AIRVUE pod will be used to collect data for autonomous aircraft like air taxis, drones, or other Advanced Air Mobility aircraft.

An Airbus “Beluga” air cargo plane, The Super Transporter, taxis onto the parking apron at KSC’s Shuttle Landing Facility. Its cargo, from the factory of Alenia Aerospazio in Turin, Italy, is the Italian Space Agency’s Multi-Purpose Logistics Module Donatello, the third of three for the International Space Station. The module will be transported to the Space Station Processing Facility for processing. Among the activities for the payload test team are integrated electrical tests with other Station elements in the SSPF, leak tests, electrical and software compatibility tests with the Space Shuttle (using the Cargo Integrated Test equipment) and an Interface Verification Test once the module is installed in the Space Shuttle’s payload bay at the launch pad. The most significant mechanical task to be performed on Donatello in the SSPF is the installation and outfitting of the racks for carrying the various experiments and cargo

An Airbus “Beluga” air cargo plane, The Super Transporter, taxis onto the parking apron at KSC’s Shuttle Landing Facility. Its cargo, from the factory of Alenia Aerospazio in Turin, Italy, is the Italian Space Agency’s Multi-Purpose Logistics Module Donatello, the third of three for the International Space Station. The module will be transported to the Space Station Processing Facility for processing. Among the activities for the payload test team are integrated electrical tests with other Station elements in the SSPF, leak tests, electrical and software compatibility tests with the Space Shuttle (using the Cargo Integrated Test equipment) and an Interface Verification Test once the module is installed in the Space Shuttle’s payload bay at the launch pad. The most significant mechanical task to be performed on Donatello in the SSPF is the installation and outfitting of the racks for carrying the various experiments and cargo

CAPE CANAVERAL, Fla. – Pilot Rick Svetkoff sits in the cockpit of a Starfighters, Inc. F-104 supersonic jet before conducting a high speed taxi test on the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida. The Star Lab suborbital launch vehicle developed by 4Frontiers Corporation can be seen above the front wheel. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – On the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida, the parachute on a Starfighters, Inc. F-104 supersonic jet, piloted by Rick Svetkoff, deploys after conducting a high speed taxi test. Hidden from the camera on the right side of the jet is the Star Lab suborbital launch vehicle developed by 4Frontiers Corporation. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – Pilot Rick Svetkoff sits in the cockpit of a Starfighters, Inc. F-104 supersonic jet after conducting a high speed taxi test on the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida. The Star Lab suborbital launch vehicle developed by 4Frontiers Corporation is attached to the right side of the jet. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – On the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida, the parachute on a Starfighters, Inc. F-104 supersonic jet, piloted by Rick Svetkoff, deploys after conducting a high speed taxi test. The Star Lab suborbital launch vehicle developed by 4Frontiers Corporation can be seen just above the front wheel. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – On the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida, the parachute on a Starfighters, Inc. F-104 supersonic jet, piloted by Rick Svetkoff, deploys after conducting a high speed taxi test. Hidden from the camera on the right side of the jet is the Star Lab suborbital launch vehicle developed by 4Frontiers Corporation. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – Before a high speed taxi test using a Starfighters, Inc. F-104, from left, Mark Homnick, CEO of 4Frontiers Corporation, Rick Svetkoff, Starfighters, Inc. president and pilot, and Panayot Slavov, business development manager for 4Frontiers Corporation, address guests at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – On the runway at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida, a Starfighters, Inc. F-104 supersonic jet, piloted by Rick Svetkoff, picks up speed to conduct a high speed taxi test. The Star Lab suborbital launch vehicle developed by 4Frontiers Corporation is located on the right side of the jet. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – A Starfighters, Inc. F-104 supersonic jet is being fueled before conducting a high speed taxi test at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida. On the right side of the jet is the Star Lab suborbital launch vehicle developed by 4Frontiers Corporation. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

CAPE CANAVERAL, Fla. – Pilot Rick Svetkoff sits in the cockpit of a Starfighters, Inc. F-104 supersonic jet before conducting a high speed taxi test at the Shuttle Landing Facility (SLF) at NASA’s Kennedy Space Center in Florida. Hidden from the camera on the right side of the jet is the Star Lab suborbital launch vehicle developed by 4Frontiers Corporation. 4Frontiers is testing the Star Lab suborbital launch vehicle which has the potential to carry payloads into low earth orbit. Tests are being conducted to verify the aeronautical conditions of the Star Lab suborbital launch vehicle. This is the first of eight tests the launch vehicle will undergo. 4Frontiers Corporation is aiming for testing to be completed by early 2012, with commercial flights starting mid-2012. Starfighters, Inc. has signed a Space Act Agreement with NASA for the use of the SLF facilities at Kennedy Space Center. Photo credit: NASA_Gianni M. Woods

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s all-electric X-57 Maxwell, in its Mod II configuration, departs Scaled Composites’ facility at Mojave Air and Space Port, en route to NASA’s Armstrong Flight Research Center in Edwards, California for delivery. The aircraft, shipped as two parts – the fuselage and the wing – was delivered to NASA Armstrong’s Research Aircraft Integration Facility, where it will be reintegrated to begin ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s Mod II configuration, the first of three primary modifications for the project, involves testing of the aircraft’s cruise electric propulsion system. The goal of the X-57 project is to share the aircraft’s electric-propulsion-focused design and airworthiness process with regulators, to advance certification approaches for distributed electric propulsion in general aviation.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s all-electric X-57 Maxwell, in its Mod II configuration, departs Scaled Composites’ facility at Mojave Air and Space Port, en route to NASA’s Armstrong Flight Research Center in Edwards, California for delivery. The aircraft, shipped as two parts – the fuselage and the wing – was delivered to NASA Armstrong’s Research Aircraft Integration Facility, where it will be reintegrated to begin ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s Mod II configuration, the first of three primary modifications for the project, involves testing of the aircraft’s cruise electric propulsion system. The goal of the X-57 project is to share the aircraft’s electric-propulsion-focused design and airworthiness process with regulators, to advance certification approaches for distributed electric propulsion in general aviation.

NASA's all-electric X-57 Maxwell, in its Mod II configuration, departs Scaled Composites' facility at Mojave Air and Space Port, en route to NASA's Armstrong Flight Research Center in Edwards, California for delivery. The aircraft, shipped as two parts - the fuselage and the wing - was delivered to NASA Armstrong's Research Aircraft Integration Facility, where it will be reintegrated to begin ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's Mod II configuration, the first of three primary modifications for the project, involves testing of the aircraft's cruise electric propulsion system. The goal of the X-57 project is to share the aircraft's electric-propulsion-focused design and airworthiness process with regulators, to advance certification approaches for distributed electric propulsion in general aviation.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA's X-57 Maxwell, the agency's first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA's Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft's cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57's goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

NASA’s X-57 Maxwell, the agency’s first all-electric X-plane and first crewed X-planed in two decades, is delivered to NASA’s Armstrong Flight Research Center in Edwards, California in its Mod II configuration. The first of three primary modifications for the project, Mod II involves testing of the aircraft’s cruise electric propulsion system. Delivery to NASA from prime contractor Empirical Systems Aerospace of San Luis Obispo, California, marks a major milestone for the project, at which point the vehicle is reintegrated for ground tests, to be followed by taxi tests, and eventually, flight tests. X-57’s goal is to further advance the design and airworthiness process for distributed electric propulsion technology for general aviation aircraft, which can provide multiple benefits to efficiency, emissions, and noise.

Space shuttle Enterprise, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), is seen as it taxis at John F. Kennedy Airport, Friday, April 27, 2012, in New York. Enterprise was the first shuttle orbiter built for NASA performing test flights in the atmosphere and was incapable of spaceflight. Originally housed at the Smithsonian's Steven F. Udvar-Hazy Center, Enterprise will be demated from the SCA and placed on a barge that will eventually be moved by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. Photo Credit: (NASA/Paul E. Alers)

Edwards, Calif. – ED13-0266-013- Sierra Nevada Corporation, or SNC, team members prepare for 60 mph tow tests of the company's Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-047- A pickup truck pulls the Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle through 60 mile per hour tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-060- A Sierra Nevada Corporation, or SNC, team member checks the company's Dream Chaser flight vehicle systems following a 60 mph tow test on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-164-34 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle out to a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-007- The Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle is prepared for 60 mph tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-022- The Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle is prepared for 60 mile per hour tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-010- The Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle is prepared for 60 mph tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-016- Sierra Nevada Corporation, or SNC, team members prepare for 60 mph tow tests of the company's Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-056- Sierra Nevada Corporation, or SNC, team members monitor the company's Dream Chaser flight vehicle systems during 60 mph tow testing on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-066- A pickup truck releases the Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle during a 60 mile per hour tow test to validate the spacecraft's brakes on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-069- Sierra Nevada Corporation, or SNC, team members check the company's Dream Chaser flight vehicle systems following a 60 mph tow test on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-049- A pickup truck pulls the Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle through 60 mile per hour tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-012- Technicians prepare for 60 mph tow tests of Sierra Nevada Corporation's, or SNC's, Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-023- The Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle is prepared for 60 mile per hour tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-021- A Sierra Nevada Corporation, or SNC, team member prepares for 60 mph tow tests of the company's Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-164-33 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle out to a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-046- Sierra Nevada Corporation, or SNC, team members prepare for 60 mph tow tests of the company's Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0215-024 - Sierra Nevada Corporation SNC Space Systems' team members prepare to tow the Dream Chaser flight vehicle along a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-070- Sierra Nevada Corporation, or SNC, team members check the company's Dream Chaser flight vehicle systems following a 60 mph tow test on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-161-35 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle out to a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-045- Sierra Nevada Corporation, or SNC, team members prepare for 60 mph tow tests of the company's Dream Chaser flight vehicle on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0215-072 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle along a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-164-32 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle out to a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0215-016 - Sierra Nevada Corporation SNC Space Systems' team members prepare to tow the Dream Chaser flight vehicle along a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-008- The Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle is prepared for 60 mph tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-054- Sierra Nevada Corporation, or SNC, team members check the company's Dream Chaser flight vehicle systems following a 60 mph tow test on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-0266-047- A pickup truck pulls the Sierra Nevada Corporation, or SNC, Dream Chaser flight vehicle through 60 mile per hour tow tests on taxi and runways at NASA's Dryden Flight Research Center at Edwards Air Force Base in California. Ground testing at 10, 20, 40 and 60 miles per hour is helping the company validate the performance of the spacecraft's braking and landing systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is continuing the development of its Dream Chaser spacecraft under the agency's Commercial Crew Development Round 2, or CCDev2, and Commercial Crew Integrated Capability, or CCiCap, phases, which are intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

Edwards, Calif. – ED13-164-34 - Sierra Nevada Corporation SNC Space Systems' team members tow the Dream Chaser flight vehicle out to a concrete runway at NASA's Dryden Flight Research Center in California for range and taxi tow tests. The ground testing will validate the performance of the spacecraft's nose skid, brakes, tires and other systems prior to captive-carry and free-flight tests scheduled for later this year. SNC is one of three companies working with NASA's Commercial Crew Program, or CCP, during the agency's Commercial Crew Integrated Capability, or CCiCap, initiative, which is intended to lead to the availability of commercial human spaceflight services for government and commercial customers. To learn more about CCP and its industry partners, visit www.nasa.gov/commercialcrew. Image credit: NASA/Ken Ulbrich

KENNEDY SPACE CENTER, FLA. -- On the KSC Shuttle Landing Facility, the Starfighter F-104 starts to taxi to the runway. The pilot is Rick Svetkoff; the co-pilot is Dave Waldrop. The aircraft is taking part in a series of pathfinder test missions from the space shuttle runway. Two flights will generate test data to validate sonic boom assumptions about the potential impacts of suborbital and orbital commercial spaceflight from the facility. NASA is assessing the environmental impact of such flights. Starfighters Inc. of Clearwater, Fla., will perform the flights to help in assessing suborbital space launch trajectories from the runway and paving the way for future commercial space tourism and research flights from the facility. Photo credit: NASA/Kim Shiflett

Equipped with state-of-the-art technology to test and evaluate communication, navigation, and surveillance systems NASA’s Pilatus PC-12 performs touch-and-go maneuvers over a runway at NASA’s Armstrong Flight Research Center in Edwards, California on Sept. 23, 2024. Researchers will use the data to understand Automatic Dependent Surveillance-Broadcast (ADS-B) signal loss scenarios for air taxi flights in urban areas. To prepare for ADS-B test flights pilots and crew from NASA Armstrong and NASA’s Glenn Research Center in Cleveland, ran a series of familiarization flights. These flights included several approach and landings, with an emphasis on avionics, medium altitude air-work with steep turns, slow flight and stall demonstrations.

As part of a combined systems test conducted by NASA Dryden Flight Research Center, NASA's NB-52B carrier aircraft rolls down a taxiway at Edwards Air Force Base with the X-43A hypersonic research aircraft and its modified Pegasus® booster rocket attached to a pylon under its right wing. The taxi test was one of the last major milestones in the Hyper-X research program before the first X-43A flight. The X-43A flights will be the first actual flight tests of an aircraft powered by a revolutionary supersonic-combustion ramjet ("scramjet") engine capable of operating at hypersonic speeds (above Mach 5, or five times the speed of sound). The 12-foot, unpiloted research vehicle was developed and built by MicroCraft Inc., Tullahoma, Tenn., under NASA contract. The booster was built by Orbital Sciences Corp., Dulles, Va. After being air-launched from NASA's venerable NB-52 mothership, the booster will accelerate the X-43A to test speed and altitude. The X-43A will then separate from the rocket and fly a pre-programmed trajectory, conducting aerodynamic and propulsion experiments until it descends into the Pacific Ocean. Three research flights are planned, two at Mach 7 and one at Mach 10.

NASA's NB-52B carrier aircraft rolls down a taxiway at Edwards Air Force Base with the X-43A hypersonic research aircraft and its modified Pegasus® booster rocket slung from a pylon under its right wing. Part of a combined systems test conducted by NASA's Dryden Flight Research Center at Edwards, the taxi test was one of the last major milestones in the Hyper-X research program before the first X-43A flight. The X-43A flights will be the first actual flight tests of an aircraft powered by a revolutionary supersonic-combustion ramjet ("scramjet") engine capable of operating at hypersonic speeds (above Mach 5, or five times the speed of sound). The 12-foot, unpiloted research vehicle was developed and built by MicroCraft Inc., Tullahoma, Tenn., under NASA contract. The booster was built by Orbital Sciences Corp., Dulles, Va.,After being air-launched from NASA's venerable NB-52 mothership, the booster will accelerate the X-43A to test speed and altitude. The X-43A will then separate from the rocket and fly a pre-programmed trajectory, conducting aerodynamic and propulsion experiments until it descends into the Pacific Ocean. Three research flights are planned, two at Mach 7 and one at Mach 10, with the first tentatively scheduled for late spring to early summer, 2001.

CAPE CANAVERAL, Fla. –At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, one of the two Shuttle Training Aircraft, or STAs, waits to taxi to the runway. STS-128 Commander Rick Sturckow and Pilot Kevin Ford are using the STAs to practice shuttle landings. The practice is in preparation for launch of space shuttle Discovery's STS-128 mission in late August to the International Space Station. The STA is a Grumman American Aviation-built Gulfstream II jet that was modified to simulate a shuttle’s cockpit, motion and visual cues, and handling qualities. The STS-128 crew is at Kennedy for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes emergency exit training and equipment familiarization, as well as a simulated launch countdown. Discovery will deliver 33,000 pounds of equipment to the station, including science and storage racks, a freezer to store research samples, a new sleeping compartment and the COLBERT treadmill. Photo credit: NASA/Kim Shiflett