Rocket reached altitude 140 ft; veered to right, landed 500-600 ft from tower. References: 482 .
State Committee for Defence (GKO) Decree 8803 'On Measures to Reconstruct Industry in Connection with Maintaining Production of Armaments -- post-war rearmament plan' was issued. References: 474 .
Jet-assisted takeoff of a Brewster F2A-3 using five British antiaircraft solid-propellant rockets demonstrated at NAS Anacostia, Comdr. C. Fink Fischer as pilot. References: 17 .
The technological basis was the N-3 project, which covered various engine and propulsion approaches. In 1955 a unit was formed within Tikhonravov's section of OKB-1 to develop the first satellite; this included Feoktistov, Bazhinov, Maksimov, and Soldatora.
Fifth Academy founded for development of ballistic missiles References: 87 .
Assembly of the first Saturn flight booster, SA-1, began at Marshall Space Flight Center. References: 16 .
Eight H-1 engines of the first stage of the Saturn C-1 launch vehicle were static-fired for 35.16 seconds, producing 1.3 million pounds of thrust. This first public demonstration of the H-1 took place at Marshall Space Flight Center. References: 16 .
Until June 4, 1961, the Mercury spacecraft Freedom 7 (MR-3) was displayed at the Paris International Air Show. Some 650,000 visitors received the details on the spacecraft and on Shepard's suborbital flight. References: 483 .
Freedom 7, Mercury spacecraft in which Alan B. Shepard, Jr., made his space flight on May 5, was a major drawing card at the Paris International Air Show. Details of the spacecraft and of Shepard's flight were related to about 650,000 visitors. References: 18 .
The F-1 engine was first fired at full power more than 1.5 million pounds of thrust) for 2.5 minutes at Edwards Rocket Site, Calif. References: 16 .
ASPO requested the Apollo Program Director to revise the LEM control weight at translunar injection as follows:
Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit References: 1 , 2 , 5 , 6 , 278 .
Transported the fifth international crew under the INTERCOSMOS programme, comprising V N Kubasov (USSR) and B Farkas (Hungary) to the Salyut-6 station to carry out scientific research and experiments. Returned crew of Soyuz 37 to Earth. Recovered July 31, 1980 15:15 GMT. References: 1 , 2 , 6 , 32 , 33 , 51 .
X-ray experiments. Launch time 1518 UT. Launching agency ESA. EXOSAT is a space research satellite of the European Space Agency. The scientific objectives of the EXOSAT mission are to measure the position, structural features, spectral and temporal characteristics of cosmic X-ray sources in the energy range from less than 0.1 keV to greater than 50 keV. References: 1 , 2 , 5 , 6 .
Operation of the long-range telephone and telegraph radio communications system in the USSR; transmission of USSR Central Television programmes to stations in the Orbita network and within the framework of international cooperation. References: 1 , 2 , 5 , 6 .
Remote sensing satellite with an ocean colour imager experiment.