www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

chinadaily.com.cn
left corner left corner
China Daily Website

Unmanned US military hypersonic test flight fails

Updated: 2012-08-16 09:16
( Agencies)

Unmanned US military hypersonic test flight fails

An undated US Air Force handout graphic depicts the X-51A Waverider in flight. An unmanned experimental hypersonic military aircraft called the Waverider broke apart over the Pacific Ocean seconds into a test flight due to a faulty control fin, the US Air Force said on August 15, 2012. [Photo/Agencies]

LOS ANGELES - An unmanned experimental aircraft designed to fly six times the speed of sound broke apart over the Pacific Ocean seconds into a military test flight due to a faulty control fin, the US Air Force said on Wednesday.

The problem with the fin on the craft known as the Waverider or X-51A was identified in a test flight on Tuesday, 16 seconds after a rocket booster on the remotely monitored craft was ignited to propel it forward, the Air Force said in a statement.

Fifteen seconds later, when the X-51A separated from the rocket booster, it lost control due to a "faulty control fin," the statement said. The 31 seconds of flight fell far short of the military's goal for the X-51A to fly for five minutes.

The aircraft broke apart immediately and fell into the Pacific Ocean near Point Mugu northwest of Los Angeles, said Daryl Mayer, a spokesman for the 88th Air Base Wing at Wright-Patterson Air Force Base in Ohio.

Even if the test had been a success, the aircraft would have crashed at the end of the flight in any case and was not considered retrievable.

The Waverider was designed to reach speeds of Mach 6 or above, six times the speed of sound and fast enough to zoom from New York to London in less than an hour. The military has its eye on using the Waverider program to develop missiles with non-nuclear explosives that could strike anywhere in the world within an hour, analysts said.

The cost of the experimental aircraft, which military officials said was dropped from a B-52 bomber before its rocket booster was ignited, has not been disclosed because many details of the program are classified.

The aircraft is known as the Waverider because it stays airborne, in part, with lift generated by the shock waves of its own flight. The Boeing Co's Phantom Works division performed design and assembly on the craft, the military said.

The fins on the rocket booster kept the aircraft on-course during the initial phase of the flight, despite the problem with the control fin on the X-51A itself, Mayer said.

A Boeing spokeswoman declined to comment on the test flight, citing an Air Force request to have all public communication come from the military.

 

...
...
...
主站蜘蛛池模板: 精品国产一区二区三区不卡 | 日韩亚洲国产综合久久久 | 亚洲图片国产日韩欧美 | 亚洲三级在线免费观看 | 日韩欧美一二区 | theav视频在线观看 | 国产精品一级片 | 欧美一区二区三区视频在线观看 | 国产精品永久免费自在线观看 | 在线播放亚洲美女视频网站 | 亚洲综合色自拍一区 | 中日韩一区二区三区 | 国产在线观看精品一区二区三区91 | 成人18网站 | 亚洲成人在线免费视频 | 亚洲手机在线 | 亚洲国产一区二区在线 | 日韩精品小视频 | 亚洲女人网 | 北岛玲亚洲一区在线观看 | 欧美一级日韩一级亚洲一级 | 九九视频在线观看视频23 | 午夜影院h | 国产精品视频九九九 | 国产夫妇肉麻对白 | 国内外成人免费在线视频 | 激情午夜天 | 国产成人小视频 | 免费一级欧美毛片 | a级毛片在线观看 | 中文字幕乱码中文乱码51精品 | 日本久久综合 | 九九视频免费在线观看 | 亚洲精品免费在线观看 | 欧美性活一级视频 | 美女va| 国产日产欧美a级毛片 | 777色狠狠一区二区三区 | 国产主播大尺度精品福利 | 亚洲男人的天堂视频 | 悟空影视大全免费高清 |