![]() The Low-Boom Flight Demonstration mission seeks to enable the possibility of boarding a commercial supersonic airliner and flying across the United States in half the time it takes today. ![]() PI: Mike Frederick | 66 | X-59 Quiet Supersonic Aircraft Facilitating aircraft design that may ultimately enable overland supersonic flight.Improves measurement: Allows for probing to be conducted at a higher closure rate, due to reduced pneumatic lag.High performance: Measures flow speed, static pressure, and angularity.Phase 2 flights are scheduled for late spring to early summer 2020. This modification is solely to make it easier to maintain the probe and will have no effect on probe measurements. The team is redesigning a portion of the probe to aid with assembly and disassembly. Thus far, the comparisons between the flight measurements and CFD models have been favorable. The team encountered and addressed minor instrumentation issues. Three of those flights were to calibrate the probe, and the other two were to measure the shock signature of an F/A-18 aircraft. In 20, the team flew five flights with the shock-sensing probe on the nose of the F-15B aircraft. If successful, the probe will be used for the Low-Boom Flight Demonstration mission. Researchers are comparing these measurements to computational fluid dynamics (CFD) models to verify those predictions. In addition to measuring the static pressure change through the shock waves, the probe measures the change in Mach number and flow angularity. The Armstrong probe is mounted on the nose of an F-15B aircraft that flies through the shock waves of another supersonic aircraft. Shock-Sensing ProbeĪ new shock-sensing probe in development at Armstrong is expected to provide researchers with key information about sonic booms. Success could lead to opening a new market for next-generation aircraft. Determining a tolerable level of noise for supersonic flight is key to suggesting that the Federal Aviation Administration (FAA) amend its current rules for supersonic aircraft. QueSST will be used to help gauge how people respond to the lower intensity “thump” rather than the disruptive sonic boom in different areas of the United States. When the new X-plane arrives from Lockheed Martin Aeronautics Company’s Skunk Works® plant, Armstrong researchers will qualify and flight test it. The development of a new experimental plane called the X-59 QueSST-which stands for Quiet Supersonic Technology-is advancing as part of the Low-Boom Flight Demonstration mission. NASA’s goal for sonic boom research is to find ways to control and lessen shock wave noise so that federal regulators will allow supersonic flight overland. Innovators at Armstrong are working to solve this problem through a variety of innovative techniques that measure, characterize, and mitigate sonic booms. Supersonic flight overland is currently severely restricted because sonic booms created by shock waves disturb people on the ground and can damage property. Artist concept of the X-59 in flight overland.
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