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Back in 2004, NASA engineers worked with DARPA to reduce the sonic boom intensity in order to develop silent supersonic planes. Now, they're teaming with Gulfstream Aerospace on a project named Quiet Spike to reduce sonic booms. They've put a 24-foot-long lance-like spike weighing 470 pounds on the nose of an F-15B aircraft.
A plane spike to cut sonic boom : Read more
A plane spike to cut sonic boom : Read more