Aero 版 (精华区)
发信人: dxmxqe (婴儿), 信区: Aero
标 题: NASA's X-43A PROVES HYPERSONIC SCRAMJET FLIGHT
发信站: 哈工大紫丁香 (2004年03月28日13:03:30 星期天), 站内信件
发信人: windtalker (守望北极星-清风笑 竟惹寂寥), 信区: AeroSpace
标 题: Re: 美无人试验机打破喷气机时速纪录 达7倍音速
发信站: 未来花园 (2004年03月28日11:15:43 星期天), 站内信件
看看NASA的官方消息吧
NASA's X-43A PROVES HYPERSONIC SCRAMJET FLIGHT
03.27.04
NASA's second X-43A hypersonic research aircraft flew successfully today, th
e first time an airbreathing scramjet powered aircraft has flown freely.
The unpiloted vehicle's supersonic combustion ramjet, or scramjet, ignited a
s planned and operated for the duration of its hydrogen fuel supply, which l
asted about 10 seconds. The X-43A reached its test speed of Mach 7.
"It's been a great, record-breaking day," said Larry Huebner, NASA Langley R
esearch Center's Hyper-X propulsion lead. "We achieved positive acceleration
of the vehicle while we were climbing, and maintained outstanding vehicle c
ontrol. This was a world-record speed for air-breathing flight," Huebner sai
d.
The flight, originating from NASA's Dryden Flight Research Center, began at
12:40 p.m. PST, as NASA's B-52B launch aircraft carrying the X-43A lifted of
f the runway. The X-43A, mounted on a modified Pegasus booster rocket, was l
aunched from the B-52B just before 2 p.m. The rocket boosted the X-43A up to
its test altitude of about 95,000 ft. over the Pacific Ocean, where the X-4
3A separated from the booster and flew freely for several minutes following
scramjet engine operation, in order to gather aerodynamic data.
"Today was a grand-slam in the bottom of the 12th," said Joel Sitz, NASA Dry
den Flight Research Center's X-43A project manager. "It was fun all the way
to Mach 7. We separated the research vehicle from the launch vehicle, as wel
l as separating the real from the imagined," Sitz said.
NASA's Langley Research Center, Hampton, Va., and Dryden Flight Research Cen
ter, Edwards, Calif., jointly conduct the Hyper-X program. ATK GASL (formerl
y MicroCraft, Inc.) in Tullahoma, Tenn., built both the vehicle and the engi
ne, and Boeing Phantom Works in Huntington Beach, Calif., designed the therm
al protection and onboard systems. The booster is a modified Pegasus rocket
built by Orbital Sciences Corp. Chandler, Ariz.
--
※ 来源:·哈工大紫丁香 bbs.hit.edu.cn·[FROM: 202.118.226.28]
Powered by KBS BBS 2.0 (http://dev.kcn.cn)
页面执行时间:3.227毫秒