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Gulfstream's Quiet Spike paves way for quieter supersonic travel

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Gulfstream's Quiet Spike paves way for quieter supersonic travel
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Pres Henne Gulfstream's Senior Vice President for Programs, Engineering, and Testing | Official Website

The development of supersonic private jet travel has long been anticipated, with many hurdles still to overcome. While supersonic flight has been possible for decades, the majority of air travel remains subsonic. Military operations typically dominate the supersonic space, although the potential for civilian use is evident. Among the companies working towards this is Boom Aerospace, aiming to launch the Boom Overture as the United States' first supersonic jet, with interest from airlines such as United and American.

However, some suggest that the future of supersonic flight may first impact the private jet market, where cost is less of a concern. This is where the Quiet Spike program from Gulfstream Aerospace, in collaboration with NASA's Dryden Flight Research Center, comes into play. The objective was to explore the possibility of reducing sonic booms on private jets. The technology was patented in 2004 and remains a focus for Gulfstream, which plans to implement it in future aircraft.

On October 23, 2006, Gulfstream announced a milestone in the development of the Quiet Spike, after the technology performed successfully in a supersonic flight test conducted shortly before. Pres Henne, Gulfstream's Senior Vice President for Programs, Engineering, and Testing, commented, "The fact that the Quiet Spike performed as designed at supersonic speeds and was extended and retracted without any difficulties, brings us one step closer to our goal of seeing if it will reduce the sonic boom when mounted on a more appropriate platform."

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The Quiet Spike, tested on a NASA McDonnell Douglas F-15B, aims to mitigate the intense noise of supersonic travel. Within this initiative, the aircraft reached speeds of Mach 1.2 with successful results. The program's spine, a multi-segmented articulated boom, seeks to break up the traditional sonic boom into smaller, less impactful waves, reducing noise pollution.

Developed originally to allow supersonic flights over populated areas, the technology addresses regulatory concerns that have historically restricted such operations. The Federal Aviation Administration (FAA), among others, has placed limitations due to the disturbances caused by sonic booms, which earlier quashed projects like the Boeing 2707.

The Quiet Spike marked several milestones, including its first flight on August 10, 2006, followed by the first supersonic flight on October 20, 2006. Further tests pushed the technology to even higher speeds. In recognition of its achievements, the program received the Laureate Award from Aviation Week in 2008.

Such advancements propel Gulfstream further in the quest to curtail the noise of supersonic travel, offering a glimpse of a future where jets could make high-speed travel quieter and more feasible.

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