![](http://www.alamy.com/thumbs/6/CFD8580B-C6DF-4C00-9631-CA719AE67D87/2ADN5F0.jpg)
Sonic boom research. F-15B aircraft in flight testing the effectiveness of a Quiet Spike (black extension at left). This is an instrument used to redu
Sonic boom research. F-15B aircraft in flight testing the effectiveness of a Quiet Spike (black extension at left). This is an instrument used to reduce and control a sonic boom, the shock caused by a supersonic (faster than the speed of sound) flight of an aircraft. The Quiet Spike streamlines the tip of the aircraft, reducing the noise.
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Photo credit: © NASA/DFRC/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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