All Quiet on the Northern Front

Mechanical technician Dan Pitts prepares a scale model of Lockheed Martin's Quiet Supersonic Technology (QueSST) X-plane preliminary design for its first high-speed wind tunnel tests at NASA's Glenn Research Center.

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter.

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter.

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter. Posing with the experiment is aerospace engineer, Jonathan M. Goodman.

Boeing Quiet Experimental Validation Concept, QEVC, performance model

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter.

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter.

The Quiet Electric Engine V1 (QUEEN V1) experiment that was performed in the NASA GRC Acoustical Testing Laboratory (ATL). Equipment is installed in the anechoic chamber and in the adjacent control room. In response to the pervasive health and environmental problems associated with aviation noise and air pollution, NASA’s Quiet Electric Engine (QUEEN) team is working to increase the peace and quiet in the world by researching ways to make engines for large single-aisle aircraft safer, cleaner, and quieter.

NASA's F-15B testbed aircraft undergoes pre-flight checks before performing the first flight of the Quiet Spike project. The first flight was performed for evaluation purposes, and the spike was not extended. The Quiet Spike was developed as a means of controlling and reducing the sonic boom caused by an aircraft 'breaking' the sound barrier.

Gulfstream Aerospace and NASA's Dryden Flight Research Center are testing the structural integrity of a telescopic 'Quiet Spike' sonic boom mitigator on the F-15B testbed. The Quiet Spike was developed as a means of controlling and reducing the sonic boom caused by an aircraft 'breaking' the sound barrier.

NASA's F-15B testbed aircraft lands after the first flight of the Quiet Spike project. The first flight was performed for evaluation purposes, and the spike was not extended. The Quiet Spike was developed as a means of controlling and reducing the sonic boom caused by an aircraft 'breaking' the sound barrier.

NASA's F/A-18 research aircraft takes off from Ellington Field in Houston, Texas for a quiet supersonic research flight off the coast of Galveston, as part of the QSF18 flight series. The F/A-18 will climb to 50,000 feet over the Gulf of Mexico, where it will perform the quiet supersonic dive maneuver.

Approaching the runway after the first evaluation flight of the Quiet Spike project, NASA's F-15B testbed aircraft cruises over Roger's Dry Lakebed near the Dryden Flight Research Center. The Quiet Spike was developed by Gulfstream Aerospace as a means of controlling and reducing the sonic boom caused by an aircraft 'breaking' the sound barrier.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 landing with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA F-15B #836 in flight with Quiet Spike attached. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

QSRA (Quiet Short-Haul Research Aircraft) S-Duct Test: Static test facility installation (Appeared on the cover of the Avaiation Week & Space Technology on March 21, 1977)

Some of the test team for the Gulfstream Quiet Spike project assembled for a group photo on May 3, 2006. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

NASA's F-15B testbed aircraft in flight during the first evaluation flight of the joint NASA/Gulfstream Quiet Spike project. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

Gulfstream's Quiet Spike sonic boom mitigator being installed on NASA DFRC's F-15B testbed aircraft. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

The control panel for the joint NASA/Gulfstream Quiet Spike project, located in the backseat of NASA's F-15B testbed aircraft. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

While the quiet supersonic dive maneuver produces a quieter version of the sonic boom in a necessary area, it produces a loud sonic boom out over the ocean. Doing so over the busiest waterway in the country makes it necessary to provide high levels of situational awareness to vessels below, through communications between NASA public affairs officers and the U.S. Coast Guard command center.

NASA’s X-59 quiet supersonic research aircraft is unveiled at a January 12, 2024 event at Lockheed Martin Skunk Works in Palmdale, California. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.

NASA Administrator Bridenstine stands with AFRC center director McBride by model NASA's Supersonic X-Plane, X-59 Quiet Supersonic Technology or QueSST. Bridenstine spoke at press event at Mojave Air and Space Port in California. The goal of X-59 is to quiet the sound when aircraft pierce the speed of sound and make a loud sonic boom on the ground.

NASA Dryden's F-15B testbed aircraft with the Gulfstream Quiet Spike sonic boom mitigator attached undergoes ground vibration testing in preparation for test flights. The project seeks to verify the structural integrity of the multi-segmented, articulating spike attachment designed to reduce and control a sonic boom.

The pilot of NASAÕs X-59 Quiet SuperSonic Technology, or QueSST, aircraft will navigate the skies in a cockpit unlike any other. There wonÕt be a forward-facing window. ThatÕs right; itÕs actually a 4K monitor that serves as the central window and allows the pilot to safely see traffic in his or her flight path, and provides additional visual aids for airport approaches, landings and takeoffs. The 4K monitor, which is part of the aircraftÕs eXternal Visibility System, or XVS, displays stitched images from two cameras outside the aircraft combined with terrain data from an advanced computing system. The two portals and traditional canopy are real windows however, and help the pilot see the horizon. The displays below the XVS will provide a variety of aircraft systems and trajectory data for the pilot to safely fly. The XVS is one of several innovative solutions to help ensure the X-59Õs design shape reduces a sonic boom to a gentle thump heard by people on the ground. Though not intended to ever carry passengers, the X-59 boom-suppressing technology and community response data could help lift current bans on supersonic flight over land and enable a new generation of quiet supersonic commercial aircraft.

Following the successful installation of mounting brackets, technicians successfully installed the pallet for the eXternal Visibility System, or XVS, onto the X-59 Quiet SuperSonic Technology X-plane, also known as X-59 QueSST. The pallet installation marks an assembly milestone as the first NASA flight systems hardware to be installed onto the vehicle. X-59 will fly to demonstrate the ability to produce quiet thumps at supersonic speeds, instead of the typical, loud sonic booms associated with supersonic flight.

A technician is working on the engine inlet of NASA’s X-59 Quiet Supersonic Technology (QueSST) aircraft at Lockheed Martin’s Skunk Works facility in Palmdale, California.

Juliet Page, a physical scientist with the Volpe National Transportation Systems Center, calibrates a microphone station during the CarpetDIEM flight series. The array featured high-fidelity microphones arranged in several configurations, giving researchers the ability to obtain accurate sound data and assess the loudness of the sonic booms, just as they will measure the quiet sonic thumps from the X-59.

NASA and Lockheed Martin publicly unveil the X-59 quiet supersonic research aircraft at a ceremony in Lockheed Martin’s Skunk Works facility in Palmdale, California. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.

NASA’s X-59 quiet supersonic research aircraft sits in position inside a hangar at Lockheed Martin Skunk Works in Palmdale, California prior to its January 12, 2024 unveiling. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.

NASA’s X-59 quiet supersonic research aircraft sits in position inside a hangar at Lockheed Martin Skunk Works in Palmdale, California prior to its January 12, 2024 unveiling. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.

NASA’s X-59 quiet supersonic research aircraft sits in position inside a hangar at Lockheed Martin Skunk Works in Palmdale, California prior to its January 12, 2024 unveiling. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.

This overhead shot of the X-59 Quiet SuperSonic Technology or QueSST aircraft shows the assembly progress of the vehicle during Spring 2021. The aircraft, under construction at Lockheed Martin Skunk Works in Palmdale, California, will fly to demonstrate the ability to fly supersonic while reducing the loud sonic boom to a quiet sonic thump. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599

Technicians preform some installation work in the mid-bay on the X-59 Quiet SuperSonic Technology or QueSST aircraft. The aircraft, under construction at Lockheed Martin Skunk Works in Palmdale, California, will fly to demonstrate the ability to fly supersonic while reducing the loud sonic boom to a quiet sonic thump. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: SEG 450 Mid Bay - Encoders Date: 4/28/2021

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

NASA test pilots perform the quiet supersonic dive maneuver off the coast of Galveston, Texas to create a quieter version of the sonic boom, in order to obtain recruited community survey feedback data. The test pilot climbs to around 50,000 feet, followed by a supersonic, inverted dive. This creates sonic boom shockwaves in a way that they are quieter in a specific area. Meanwhile, NASA researchers match community feedback to the sound levels of the flights, using an electronic survey and microphone monitor stations on the ground. This is preparing NASA for community response models for the future X-59 QueSST.

Here is a wide shot of the wing, engine and engine inlet area of NASA’s X-59 Quiet SuperSonic Technology or QueSST aircraft. The aircraft, under construction at Lockheed Martin Skunk Works in Palmdale, California, will fly to demonstrate the ability to fly supersonic while reducing the loud sonic boom to a quiet sonic thump. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: SEG 400 Main Wing Assembly, SEG 430 Spine, SEG 500 Empennage Date: 4/28/2021

NASA's F-15B research testbed jet from the NASA Dryden Flight Research Center flew in the supersonic shockwave of a Northrop Grumman Corp. modified F-5E in support of the Shaped Sonic Boom Demonstration (SSBD) project, which is part of the DARPA's Quiet Supersonic Platform (QSP) program.

NASA's ultra-quiet YO-3A acoustics research aircraft taxis out from the ramp at the Dryden Flight Research Center before a pilot checkout flight.

A technician is shown working on the X-59 Quiet SuperSonic Technology or QueSST aircraft’s vertical tail prior to installation. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: SEG 530 Vertical Tail - Rudder Installed Date: 5/12/2021

Pictured here is a close up view of the X-59 Quiet SuperSonic Technology or QueSST aircraft’s vertical tail prior to installation. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: SEG 530 Vertical Tail - Rudder Installed Date: 5/12/2021

Following the successful installation of mounting brackets, technicians successfully installed the pallet for the eXternal Visibility System, or XVS, onto the X-59 Quiet SuperSonic Technology X-plane, also known as X-59 QueSST. The pallet installation marks an assembly milestone as the first NASA flight systems hardware to be installed onto the vehicle. X-59 will fly to demonstrate the ability to produce quiet thumps at supersonic speeds, instead of the typical, loud sonic booms associated with supersonic flight.

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.

This overhead shot of the X-59 Quiet SuperSonic Technology or QueSST aircraft shows the assembly progress of the vehicle during Spring 2021. Pictured here you can see the nose (far left) which will later be mounted to the middle section in the photo known as the fuselage and the last section is the wing and tail in the far right of the photo. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: Manufacture Area From Above Date: 3/30/2021

This overview shot of the X-59 Quiet Supersonic Technology or QueSST aircraft shows the vehicle before a major merger of three major aircraft sections – the fuselage, the wing, and the tail assembly – together, making it looks more like an airplane. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: Manufacture Area From Above Date: 3/30/2021

This overhead shot of the X-59 Quiet SuperSonic Technology or QueSST aircraft shows the assembly progress of the vehicle during Spring 2021. In the left side of the picture, the fuselage which contains the cockpit is shown and the right side of the photo shows the wing and the tail section of the aircraft. Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: Manufacture Area From Above Date: 3/30/2021

Some climate forecast models indicate there is an above average chance that there could be a weak to borderline El Niño by the end of November 2003. However, the trade winds, blowing from east to west across the equatorial Pacific Ocean, remain strong. Thus, there remains some uncertainty among climate scientists as to whether the warm temperature anomaly will form again this year. The latest remote sensing data from NASA's Jason satellite show near normal conditions across the equatorial Pacific. There are currently no visible signs in sea surface height of an impending El Niño. This equatorial quiet contrasts with the Bering Sea, Gulf of Alaska and U.S. West Coast where lower-than-normal sea surface levels and cool ocean temperatures continue (indicated by blue and purple areas). The image above is a global map of sea surface height, accurate to within 30 millimeters. The image represents data collected and composited over a 10-day period, ending on Nov. 3, 2003. The height of the water relates to the temperature of the water. As the ocean warms, its level rises; and as it cools, its level falls. Yellow and red areas indicate where the waters are relatively warmer and have expanded above sea level, green indicates near normal sea level, and blue and purple areas show where the waters are relatively colder and the surface is lower than sea level. The blue areas are between 5 and 13 centimeters (2 and 5 inches) below normal, whereas the purple areas range from 14 to 18 centimeters (6 to 7 inches) below normal. http://photojournal.jpl.nasa.gov/catalog/PIA04878