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Displaying 101—110 of 1000 matches for query "April_1941" retrieved in 0.002 sec with these stats:

  • "april" found 9681 times in 4583 documents
  • "1941" found 521 times in 115 documents



Curtiss 18-T two-place lighter powered by a Curtiss-Kirkham K-12-350, made first flights, reached speed of 162 mph.
Central Committee for the Study of Rocket Propulsion established in the Soviet Union.
Oleo landing gear tested by Navy on NB-1 at Seattle.
The National Advisory Committee for Aeronautics NACA analysis of basic aeronautical legislation was accepted by Joint Senate-House conferees, leading to the Air Commerce Act of May 20, 1920. This freed National Advisory Committee for Aeronautics NACA of responsibility for regulation of civil aviation and permitted it to concentrate upon the conduct of aeronautical research.
Raktenflugplatz in Germany was visited by Mr. and Mrs. G. Edward Pendray as official representatives of the American Interplanetary Society , who upon their return organized the experimental program of the society. Secretary of the American Interplanetary Society , Charles P. Mason makes an appeal for new members in the pages of Hugo Gernsback 's magazine Science Wonder ...
British commission gave North American Aircraft 120 days to produce fighter prototype to specifications, which resulted in the highly successful P-51 Mustang. the first aircraft to utilize the National Advisory Committee for Aeronautics NACA low-drag wing based on prolongation of laminar flow. Low-turbulence wind tunnel tests (completed in 1938) had led to five different families of low-drag ...
Aberdeen Proving Ground wind-tunnel tests of sweptback wing at Mach 1.72 carried out on the suggestion of Theodore von Karman . Kenneth Gatland chairman of the CBAS continues his summary of rocket propulsion in Practical Mechanics magazine.
First Deacon rocket launched at Wallops Island, which achieved a velocity of 4,200 feet per second. "The Barrier" by Philip Ellaby Cleator , founder of the British Interplanetary Society appears in ''Fantasy'' magazine. Kenneth Gatland chairman of the CBAS and now co-founder of the renewed BIS continues his summary of rocket propulsion in Practical Mechanics magazine. In ...
DOD directed Research and Development Board to determine whether Air Force with 39 different aircraft types ordered in 1953 procurement program, and the Navy with 27 different types, were operating too many different types of aircraft.
Bell Laboratory announced invention of the silicon solar battery. Writer Martin Caidin explains the current state of Soviet rocket development in "Man's Magazine".

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