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Aviation History
1942
1942 - 1345.PDF
JUNE 25TH, 1942 FLIGHT 041 An engineer makes notes on behaviour of rear gun turret at extremely low temperatures. This picture was photographed through the four panes of glass in the observation window. ALTITUDE RESEARCH Additions to the Boeing Stratosphere Laboratory : Simulating Temperature Pressure and Humidity Up to 50,000ft. By HARRY WILKIN PERRY STUDY of the effects upon materials and men of the extreme cold and rarefied air encountered when flying at altitudes of six miles or more above the surface of the earth are being made in a ground-level laboratory by the Boeing Aircraft Co. at Seattle, Washington. The research was begun in the spring of 1940, when the original strato-chamber, claimed to be the world's first double-compartment high-altitude chamber, was completed for testing cabin pressure controls on the nine Stratoliners then near- ing completion for passenger and mail service on trans continental airlines. j Military requirements for fligirt at great height, and various phenomena that have been observed during the war when operating in the substratosphere, necessi tated more extensive research. The Boeing Company therefore built a cold Engineers emerging from the cold-room through the double wood-and- cork doors. a room last winter and added a third jcompart- ment to the original two- chamber test tank for
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