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This F-5E was modified by NASA for a constant area beyond drag optimum to reduce the sonic boom. The NASA Shaped Sonic Boom Demonstration, also known as the Shaped Sonic Boom Experiment, was a two-year program that used a Northrop F-5E with a modified fuselage to demonstrate that the aircraft's shock wave, and accompanying sonic boom, can be shaped, and thereby reduced.
The X-54A was reported as being developed by Gulfstream Aerospace and is intended to be powered by two Rolls-Royce Tay turbofan engines. [1] The X-54A may be connected to Gulfstream's "Sonic Whisper" program, trademarked in 2005 as an aircraft design to "reduce boom intensities during supersonic flight"; [9] besides Gulfstream, Lockheed Martin and Boeing have also produced viable designs for ...
A sonic boom is a shock-wave, or pressure disturbance, caused by the movement of the plane through the air, much like the wave produced by the bow of a ship as it moves through water: just as the bow wave is produced for the entire journey of the ship, so the sonic shockwave occurs throughout the duration of a supersonic flight. [9]
The Shaped Sonic Boom Demonstration was a two-year program that used an F-5E with a modified fuselage in order to demonstrate that the aircraft's shockwave, and accompanying sonic boom, can be shaped and thereby reduced. [56] Northrop Grumman RQ-4 Global Hawk: Fixed Wing, UAV Research Platform, Airborne Science Program: Active (2)
The sound of a sonic boom depends largely on the distance between the observer and the aircraft shape producing the sonic boom. A sonic boom is usually heard as a deep double "boom" as the aircraft is usually some distance away. The sound is much like that of mortar bombs, commonly used in firework displays. It is a common misconception that ...
The Lockheed Martin X-59 Quesst ("Quiet SuperSonic Technology"), sometimes styled QueSST, is an American experimental supersonic aircraft under development by Skunk Works for NASA's Low-Boom Flight Demonstrator project. [2]
Gulfstream X-54 – Supersonic boom intensity research and demonstration aircraft; Lockheed Martin X-55 – Advanced composites technology demonstrator; Lockheed Martin X-56 – Flutter suppression and gust load testing unmanned testbed; NASA X-57 Maxwell - Electric-powered light aircraft; Lockheed Martin X-59 QueSST - Low-boom supersonic aircraft
In 2003, a Shaped Sonic Boom Demonstration aircraft was flown which proved the soundness of the design and demonstrated the capability of reducing the boom by about half. Even lengthening the vehicle (without significantly increasing the weight) would seem to reduce the boom intensity (see Sonic boom § Abatement).