Quiet Spike

Quiet Spike was a collaborative program between Gulfstream Aerospace and NASA's Dryden Flight Research Center to investigate the suppression of sonic booms.

The boom caused by Concorde generated substantial public opposition in the United States and eventually in other countries around the world.

[citation needed] The sonic boom issue was also a significant factor in the eventual cancellation of the Boeing 2707.

For example, the sonic boom from the Concorde traveling at a speed of Mach 2 (2450 km/h) was about 2.2 psf (0.11 kPa) (pound per square foot).

[2] Because of sonic boom intensity, many countries now prohibit supersonic overflight over land or population centres.