Terrific Speed Of Latest Rocket Plane
NEW V01U1, Dec. 29. Mr Marvin "Miles, aviation editor of the Los Ange'es Times, i'eports that •aix XI rocket plane has fiown at a speed of 1989 miles aii hour ia. the stratosphefe. Mr Miles said that "reliable infOrm--aht-S" said the aiitiounced speed was Maeh III. Maeh I eqtials the speed oi soitnd lietweeu aiititudes of 35,000ft aitd 100,000ft. • Ofiicial announeemefits in the past have credited XI with speeds of "hua* dreds of miles an hour faster than the speed of sound. ' ' Not Quite Gorrect. A' later message says the U.S. Air Foree announced that the reGent press reports of speeds reaehed by its Bell XI rocket plane were incorrect. The statement followed the Los Angeles Times ' report that XI had flown at 1989 miles an hour in the .stratosphere. The Air Force said the specifie speed could not be disclosed because of security and continning experiments. However, it repeated the previous announcements that XI had "flown hundfeds of tailes. fastey thiai tho speed Of Bound."
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Chronicle (Levin), 31 December 1949, Page 4
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172Terrific Speed Of Latest Rocket Plane Chronicle (Levin), 31 December 1949, Page 4
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