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The State of the Union: Lies about a Dishonest War
"Cub Driver" wrote in message ... The benefits of swept wings were understood by German aeronautical engineers as far back as 1936, but as aircraft speeds were much lower than mach 1 at the time, the issue was somewhat academic. When Boeing had the XB-47 on the drawing board, the plane had a straight wing. A Boeing rep was part of Operation Paperclip, the great vacuum cleaner sucking up German technology in 1945-46. He cabled back to hold everything; he had some stuff that Boeing ought to look at. In consequence the B-47 had swept wings and carried its turbojets slung under the wings in pods. Unless NACA is regarded as the same institution, I suspect this was long in advance of NASA. From National Aeronautics and Space Act of 1958 that created NASA: NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS Sec. 301. (a) The National Advisory Committee for Aeronautics, on the effective date of this section, shall cease to exist. On such date all functions, powers, duties, and obligations, and all real and personal property, personnel (other than members of the Committee), funds and records of that organization, shall be transferred to the [National Aeronautics and Space] Administration. So I would say that its work can be claimed by NASA. Also the data uncovered in Germany by Boeing engineer George Schairer showed that German research into swept wing designs predated the NACA data (of which Boeing was already familier). That being said, although the German data showed positive effects of swept wings at high speeds, the actual 35 degree sweep was develop by Boeing and Schairer from their own wind tunnel research. The German data only went out to 29 degrees of sweep. Podded engines were added also from Boeing wind tunnel research. Apparently the Air Force gave Boeing the impression that the B-47 without podded engines was too ugly to consider, something Boeing may have forgotten with their recent frog-mouthed Tac Air loser. The real reason that the B-47 had swept wings and podded engines is because Boeing invested their B-29 profits in their own wind tunnel while their competitors were still buying wind tunnel time from places like Cal Tech. This allowed Boeing to try many more designs far more quickly than the others. That is the important lesson in this story. all the best -- Dan Ford email: see the Warbird's Forum at www.warbirdforum.com and the Piper Cub Forum at www.pipercubforum.com |
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