Download Patton. Operation Cobra and Beyond by Michael & Gladys Green PDF

By Michael & Gladys Green

Patton. Operation Cobra and past КНИГИ ;ВОЕННАЯ ИСТОРИЯ Издательство: MBI Publishing CompanyАвтор(ы): Michael & Gladys GreenЯзык: EnglishГод издания: 1998Количество страниц: 161ISBN: 0-7603-0498-XФормат: pdfРазмер: 56.4 mbRapid0

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Working in collaboration with the Flight Test and Aerodynamics staff, Boeing designers held themselves to exceedingly fine margins in the design of Model 341. All wing skin joints had to be smooth, all external rivets flush; turbo-superchargers had to be totally enclosed and none of the usual excrescences of aircraft would be allowed: they planned no drains, vents, no external air scoops. All lights, fuel system vents, thermometers and pitot tubes were to be flush, radio loop aerials streamlined; de-icers flush.

Scarcity of materials and accessories and the snail’s pace with which completed drawings were released added despair to the never easy task of building the first machine. Machining the spar chords, great lengths of duralumin almost as massive as railroad rails, was one of the most rugged tasks of those days. As many as thirty thousand manhours were invested in the machining of forgings, only to learn that the rough forgings, produced by new, inexperienced war companies, had cracked. Sometimes it was necessary to ‘rob’ a train of accessories in transit, to stop the train en-route, remove the accessories, load them on an aircraft and fly them to Seattle.

Beall argued that the turbo-supercharger installations of the Liberator differed radically from those of the B-17 and B-29, hence the cases were not comparable; that the altitude performance of the B-24 would always be compromised by these turbo-supercharger installations, thus the B-24’s altitude performance limitations did not result from that aircraft’s high wing loading. Boeing-Wright Field debates on this subject grew hot, so hot that on one occasion a technical commission with orders from Washington arrived at Seattle to demand that additional wing be given the B-29.

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