Gulfstream Demonstrates 'Quiet Spike' for Potential Supersonic Bizjet | Aviation International News

Gulfstream Demonstrates 'Quiet Spike' for Potential Supersonic Bizjet

Gulfstream Aerospace hosted a NASA F-15 in Savannah, Ga., on February 14 for an aerial demonstration of its Quite Spike telescopic nose spike installation.

By Matt Thurber • Editor-in-Chief

March 27, 2007

Gulfstream Aerospace hosted a NASA F-15 in Savannah, Ga., on February 14 for an aerial demonstration of its Quite Spike telescopic nose spike installation. If Gulfstream were ever to decide to launch a supersonic business jet, it would have to employ some means of suppressing the sonic boom while flying over land.

Instead of building an airplane that could exceed Mach 1 only away from land, Gulfstream envisions a design with a retractable spike on the nose that extends to change the shape of the nose and alter the impact of the sonic boom. Lab testing has shown that the spike can reduce the sound of the boom, resulting in a boom that is quieter than that of the Concorde supersonic airliner by a factor of 10,000.

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