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Igor I. Sikorsky made initial flights with the first successful single-main-rotor helicopter, precursor of the R-4 two-place design procured in 1942 by the AAF. World's largest balloon, the Star of Poland, was unable to make stratospheric flight because of the German invasion. The United States had provided helium gas in August for this Polish effort and several American experts, including A. W. ...

... 1939 22 Aug 23 1939 23 Aug 24 1939 24 Aug 25 1939 25 Aug 26 1939 26 Aug 27 1939 27 Aug 28 1939 28 Aug 29 1939 29 Aug 30 1939 30 Aug 31 1939 31 September 1939 September Sep 1 1939 1 Sep 2 1939 ...

... , member of the National Advisory Committee for Aeronautics NACA from its beginning in 1915 to 1939, and Chairman of National Advisory Committee for Aeronautics NACA from 1927 until ...

September 3-4: RAF Bomber Command carried out first night propaganda raid, dropping leaflets over Hamburg, Bremen, and the Ruhr. On September 27, British Air Ministry announced that the RAF had dropped 18 million leaflets over Germany since the beginning of the war. When leaflet bombing was suspended on April 6, 1940, Bomber Command had dropped 65 million leaflets.

1930 1931 1932 1933 1934 1935 1936 1937 1938 1939

... Prime Minister Ohira on cooperative efforts in basic and applied research; working groups at the September meeting had looked at possible joint projects in areas such as environment, health, and outer ... Lyakhov and Valery Ryumin during their 175 days aboard Salyut 6 . At a Kremlin ceremony September 8, General Secretary Leonid Brezhnev conferred the titles of heroes of the Soviet Union and ... , Tass in English, Moscow Dom Svc, Aug 23/79-Sept 5/79) August 1979 August September 1979 September Sep 1 1979 1 Sep 2 1979 2 Sep 3 1979 3 Sep 4 ...

... photography and spectrometry from orbit. They loaded used equipment on Progress 17 and undocked it September 17 at 3:44 p.m. Moscow time; Tass reported that it "ceased to exist ... up September 18. On September 29 the crew marked three months in the complex. (FBIS, Tass in English, Sept 2, 13, 17-18, 23, 29-30/83) August 1983 August September 1983 September Sep ...

... /82) John J. Quann was appointed deputy director of GODDARD SPACE FLIGHT CENTER GSFC , effective September 8. He had been director of GODDARD SPACE FLIGHT CENTER GSFC 's mission and data ... CENTER GSFC 's laboratory for high-energy physics since 1970, as NASA chief scientist, effective September 20. In this position he would be the principal adviser to the administrator and other ... watts in present systems. ( MARSHALL SPACE FLIGHT CENTER MSFC Release 82-84) August 1982 August September 1982 September Sep 1 1982 1 Sep 2 1982 2 Sep 3 1982 3 Sep 4 ...

... 's economic austerity program. ''(M&R, 9/30/63,18)'' In an article in the September issue of Aerospace magazine, Vice President Lyndon B. Johnson pointed out some of the many ... )'' “Can Astronauts Bail Out and Live” article in Popular Science magazine by Wernher von Braun September 1963 September Sep 1 1963 1 Sep 2 1963 2 Sep 3 1963 3 Sep 4 ...

... technological agreement shortly as result of British government and industry team visit to Moscow during September, reported Aviation Week. Agreement would cover automatic landing, aircraft engine technology and reliability, engine noise ... to a depth of about 13 ft, according to Troitski. ''(S /F 9/67, 305)'' September 1967 September Sep 1 1967 1 Sep 2 1967 2 Sep 3 1967 3 Sep 4 ...

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