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

US EUROPE AFRICA ASIA 中文
World / US and Canada

Pilot actions examined in US crash of Virgin Galactic space

(Agencies) Updated: 2014-11-04 14:43

Pilot actions examined in US crash of Virgin Galactic space

Investigators from the National Transportation Safety Board (NTSB) look at wreckage from the crash of Virgin Galactic's SpaceShipTwo near Cantil, California November 2, 2014. [Photo/Agencies]

Hart told a news conference on Sunday that investigators had determined SpaceShipTwo's tail system was supposed to have been released for deployment as the craft was traveling about 1.4 times the speed of sound. Instead, the tail section began pivoting when the vehicle was flying at Mach 1, the speed of sound.

"I'm not stating that this is the cause of the mishap. We have months and months of investigation to determine what the cause was," Hart said.

Asked if pilot error was a possible factor, Hart said: "We are looking at all of these issues to determine what was the root cause of this mishap ... including that possibility."

Also unclear was how exactly the tail mechanism, once it was unlocked, began to rotate, since that maneuver requires a separate pilot command that was never given, Hart said. This raised questions about whether the craft's position in the air and its speed somehow enabled the tail section to swing free on its own.

SpaceShipTwo was released normally from the carrier jet WhiteKnightTwo at an altitude of about 45,000 feet. The rocket motor, fueled for the first time in flight with a new plastic-based propellant formula, then ignited as planned, Hart said.

SpaceShipTwo's fuel tanks and engine were recovered intact, indicating there was no explosion. "The engine burn was normal up until the extension of the feathers," Hart told reporters.

About 800 people have paid or put down deposits for a ride into space at $250,000 a seat, and Branson plans to be on the first commercial flight with his son.

Branson said Monday his company's venture was "absolutely" worth the risks. "It's a grand program, which has had a horrible setback, but I don't think anybody... would want us to abandon it at this stage," he told NBC.

Virgin Galactic is about two-thirds finished building the second of its five planned space tourism vehicles, and was determining how the crash probe would alter its production schedule, chief executive George Whitesides told Reuters.

Virgin Galactic is a U.S. offshoot of the London-based Virgin Group founded by Branson, whose empire ranges from airlines to music stores and mobile phones.

Previous Page 1 2 Next Page

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 欧美野外性xxxxfeexxxxx | 国产免费a级片 | 一级片免费观看视频 | 一级毛片aaaaaa免费看 | 深夜一级毛片 | 久久成人午夜 | 亚洲一区二区三区首页 | 国产成人精品一区二区 | 午夜精品久视频在线观看 | 免费毛片a线观看 | 日本亚州在线播放精品 | 国产欧美17694免费观看视频 | 男女精品视频 | 亚洲国产一区二区三区四区 | 精品真实国产乱文在线 | 国内久久精品视频 | 国产精品久久久久久亚洲伦理 | 欧美成人性色xxxxx视频大 | 日韩欧美一级毛片视频免费 | 国产三级在线观看 | 久久精品免视国产 | 国产黄色片在线观看 | 国内偷自第一二三区 | 三级免费毛片 | 日韩免费专区 | 一色屋精品亚洲香蕉网站 | 国产精品漂亮美女在线观看 | 精品成人在线视频 | 日本人视频网站一 | 久草在现| 91久久精品国产亚洲 | 免费观看a毛片一区二区不卡 | 国产精品免费观在线 | 韩国在线精品福利视频在线观看 | 精品一区二区三区免费站 | 日韩加勒比在线 | 在线中文字幕亚洲 | 亚洲人成综合 | 免费亚洲黄色 | 中文字幕曰韩一区二区不卡 | 日韩中文字幕一在线 |