One of multiple microphone stations used in the CarpetDIEM flight series, which gave researchers valuable lessons learned in preparations to deploy a similar array for the quiet supersonic X-59. Prior to community overflights, X-59 will undergo an acoustic validation phase, during which NASA will deploy the array of specially-configured microphones to measure the X-59’s thumps, in order to verify that they are as quiet as predicted.
Dr. Forrest Carpenter, left, principal investigator for the third phase of CarpetDIEM, Carpet Determination in Entirety Measurements flights, monitors a test from one of the control rooms at NASA’s Armstrong Flight Research Center. Next to Carpenter is Brian Strovers, chief engineer for Commercial Supersonic Technology. The third phase of CarpetDIEM tested logistics and upgraded ground recording systems in preparation for the acoustic validation phase of the Quesst mission.
The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. Shown is one of 10 ground recording stations set up along a 30-mile stretch of desert to record sonic booms during the third phase of the of CarpetDIEM, Carpet Determination in Entirety Measurements flights. An F-15 and an F-18 from NASA’s Armstrong Flight Research Center created sonic booms, both loud and soft, to verify the operations of ground recording systems.
Aerospace engineer Larry Cliatt, Quesst Phase 2 Sub-Project Manager and technical lead for the acoustic validation phase of the Quesst mission, sets up a ground recording system in the California desert. The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. The testing was the third phase of Carpet Determination in Entirety Measurements flights, called CarpetDIEM for short. An F-15 and an F-18 from NASA’s Armstrong Flight Research Center created sonic booms, both loud and soft, to verify the operations of ground recording systems spread out across 30 miles of open desert.
Dr. Alexandra Loubeau, one of the technical co-leads for sonic boom community testing for the Quesst mission, sets out a microphone in the California desert. . The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. The testing was the third phase of Carpet Determination in Entirety Measurements flights, called CarpetDIEM for short. An F-15 and an F-18 from NASA’s Armstrong Flight Research Center created sonic booms, both loud and soft, to verify the operations of ground recording systems spread out across 30 miles of open desert.
Aerospace engineer Larry Cliatt, Quesst Phase 2 Sub-Project Manager abd technical lead for the acoustic validation phase of the Quesst mission, sets up a ground recording system in the California desert. The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. The testing was the third phase of Carpet Determination in Entirety Measurements flights, called CarpetDIEM for short. An F-15 and an F-18 from NASA’s Armstrong Flight Research Center created sonic booms, both loud and soft, to verify the operations of ground recording systems spread out across 30 miles of open desert.
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.
The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. To simulate the sonic thumps expected to be created by the X-59, NASA Armstrong Flight Researcher Center pilot Jim Less performed inverted dive maneuvers in an F-18, shown here, to generate softer sonic booms. The sonic booms were recorded by 10 ground recording stations stretched across 30 miles of desert near Edwards Air Force Base.
The Quesst mission recently completed testing of operations and equipment to be used in recording the sonic thumps of the X-59. Researchers used three weather towers and a sonic anemometer to collect weather and atmospheric data while recording sonic booms generated by an F-15 and an F-18 from NASA’s Armstrong Flight Research Center.
A NASA F/A-18 sits on the apron at NASA's Armstrong Flight Research Center in Edwards, California, prior to a supersonic research flight.