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发表于 2010-12-24 12:42:10
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前面说了, 大飞机是不能随便乱飞的, 历史很有趣, 54年前, 试飞员 Tex Johnston 用波音707 大飞机, 居然在空中飞了一个桶滚!!!
福籁要说的是, 尊重科学, 这家伙命大, 咱们不学他。
1955 年 8 月 7 日首飞时，试飞员 Tex Johnston 在华盛顿湖上空得意忘形地做了一个桶滚，把在地面上观摩的波音高层惊得个肝尖儿颤，因为失败的后果不堪设想。当然，367-80 的首飞是成功的。波音 367-80，波音 707 的原型.
http://www.insky.cn/bbs/read.php?tid-50882.html
http://en.wikipedia.org/wiki/Alvin_M._Johnston
Tex Johnston is best known for barrel rolling the Boeing model 367-80 (better known as the Dash-80, the prototype of the KC-135 Stratotanker, which was the basis for the very first US transport jet B-707) in a demonstration flight over Lake Washington outside of Seattle, on August 7, 1955.[4] The maneuver was caught on film and is frequently shown on the Discovery Wings cable channel in a three-minute short as part of the Touched by History series. Called before then Boeing president Bill Allen for rolling the airplane, Johnston was asked what he thought he was doing. Tex responded with "I was selling airplanes". Johnston kept his position as a test pilot, and got in no legal troubles for his actions.
http://www.historylink.org/output.cfm?file_id=390
Boeing prototype jet performs dramatic roll over Lake Washington on August 7, 1955.
HistoryLink.org Essay 390 : Printer-Friendly Format
On August 7, 1955, Alvin M. "Tex" Johnston stuns the crowd at the Seafair Gold Cup hydroplane race on Lake Washington by barrel (or aileron) rolling the prototype Dash-80, the precursor to the Boeing 707, thus launching the era of the modern commercial jet. Johnston's co-pilot was Boeing test pilot James R. Gannett (1923-2006). (What Johnston did with the airplane was called a barrel-roll but some consider it an aileron roll in which a plane rotates on its long axis, rather than describing a "barrel" loop. However, unlike a conventional aileron, or snap, roll, Johnston maintained positive gravity through the maneuver.) Even Boeing President William Allen is taken by surprise as he escorts potential customers who are seeing the jet for the first time.
Flying at more than 400 miles per hour just 400 feet above the water, Johnston commenced a sudden ascent. The jet's swept-back wings spiraled as the 128-foot-long, 160,000 pound plane rolled, flying for a short time upside down. Then, for extra measure, Johnston performed a second barrel-roll. Boeing President Allen asked a guest with a heart problem if he could borrow his pills. The potential jet buyers were duly impressed.
By the time Johnston broke the transcontinental speed record in 1957 by flying from Seattle to Baltimore in three hours, 48 minutes, orders for the new 707 were pouring in.
http://mistercrew.com/blog/2009/08/07/tex-johnston/
Tex Johnston
By R.A. Schenck | Published: August 7, 2009
54 years ago today, test pilot Tex Johnston performed a barrel roll in a Boeing 707 prototype in front a group of prospective buyers over Lake Union.
From wikipedia:
[blockquote]As part of the Dash 80’s demonstration program, Bill Allen invited representatives of the Aircraft Industries Association (AIA) and International Air Transport Association to the Seattle’s 1955 Seafair and Gold Cup Hydroplane Races held on Lake Washington on August 6, 1955. The Dash-80 was scheduled to perform a simple flyover, but Boeing test pilot Alvin “Tex” Johnston instead performed a barrel roll to show off the jet airliner.
The next day, Allen summoned Johnston to his office and told him not to perform such a maneuver again, notwithstanding Johnston’s assertion that doing so was completely safe (”It’s a one-g maneuver. It’s absolutely nonhazardous, but it’s very impressive,” explained Johnston to Allen).
To date the only other four engine jet transport aircraft known to have been rolled is Concorde which was extensively rolled during testing by both British and French test-pilots. Other big four engine jet aircraft have done barrel rolls; for instance, the Avro Vulcan XA890 was rolled by Roly Falk on the first day of the 1955 Farnborough Airshow, but it was a bomber. The barrel roll story appears on a video called Frontiers of Flight – The Jet Airliner, produced by the National Air and Space Museum in association with the Smithsonian Institution in 1992.
The legacy of the 707 barrel roll lives on: Boeing Chief Test Pilot John Cashman has stated that just before he piloted the maiden flight of the Boeing 777 on June 12, 1994, his last instructions from then-Boeing President Phil Condit were “No rolls.”
[/blockquote]
Photo taken from the cockpit while the plane was halfway through the maneuver.
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