Nov 30 2000
From The Space Library
NASA announced that new technology recently tested at Ames Research Center (ARC) had converted sounds emanating from landing-gear wind noise into color images on computer screens, "enabling engineers to pinpoint loud and preventable aircraft flight noise more easily than in the past." The imposition of nighttime curfews on noisy takeoffs and landings had prompted aircraft manufacturers to develop quieter planes. Paul T. Soderman, leader of the ARC aeroacoustics group, explained that the ability to visualize the cause of wind noise coming from landing gear enables engineers to analyze the problem so that they can find ways to reduce significantly noise. The engineers had created the sound images using a computer linked to a quarter-scale landing-gear model and an array of 70 microphones inside the wall of a wind tunnel. The researchers had then removed various combinations of landing-gear parts in the wind tunnel, resulting in significant noise reduction.
Space Shuttle Endeavour launched from Kennedy Space Center in Cape Canaveral, Florida, on Mission STS-97, carrying to the ISS Commander Brent W. Jett Jr., Pilot Michael J. Bloomfield, and Mission Specialists Joseph R. Tanner, Marc Garneau, and Carlos I. Noriega. The purpose of STS-97, also known as ISS Assembly Flight 4A, was to connect solar arrays, to prepare a docking port for the U.S. -made Destiny module, to install Floating Potential Probes, to install camera cable outside the Unity module, and to transfer supplies, refuse, and equipment between the ISS and the Shuttle.
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