Goddard receives US Patent 1,103,503. Although mainly concerned with his concept of cartridge rockets, a brief section fully outlines the concept of liquid rocket propulsion. References: 377 .

Decree 'On establishment of BON of Fourth Directorate of GAU in Ministry of Armed Forces' was issued. References: 474 .

The first 5-1 aircraft, controlled on its first glide flight by A K Pakhomov, was dropped from a Pe-8 bomber.

Reached 1.5 km altitude.

Temperature, winds research. Launched at 0139 local time. Reached 69.2 km.

Solar radiation research. Launched at 0830 local time. Reached 103 km.

Temperature, aspect research. Launched at 0855 local time. Reached 91.8 km.

A study submitted to NASA by Douglas Aircraft Company concluded that a six-man space research station, capable of orbiting for one year, could be orbiting the Earth within five years. The crew, serving on a staggered schedule, would travel to and from the station on modified Gemini or Apollo spacecraft. The station would provide a small degree of artificial gravity by rotating slowly and would include a centrifuge to simulate reentry forces.

Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). References: 1 , 2 , 5 , 6 , 278 .

Area survey photo reconnaissance satellite. References: 1 , 2 , 6 , 93 .

Soft lunar landing attempt failed. References: 1 , 2 , 5 , 6 , 278 .

Demonstrated navigation technologies. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 , 278 .

Area survey photo reconnaissance satellite; returned film capsule. References: 1 , 2 , 6 .

Geostationary meteorological satellite. References: 1 , 2 , 5 , 6 .

Magnetospheric research. European Space Agency satellite. Launch time 1043 GMT. Reached initial operational position of 6 deg East on 26 Jul 1978. During the two years of its mission, it will be maintained in position between longitude 0 and 35 deg east in geosynchronous orbit. References: 1 , 2 , 5 , 6 .

Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network. References: 1 , 2 , 5 , 6 .

Fifth and final launch of a Thor/Block 5D-I from Vandenberg AFB (first launch on 11 September 1976). References: 88 .

Last two launches of the Navy's Bomarc target missile from Vandenberg AFB (first Bomarc launch on 25 August 1966). References: 88 .

Global Positioning System. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). References: 1 , 2 , 5 , 6 , 278 .

Radar calibration mission. References: 1 , 2 , 5 , 6 .

Radar calibration mission. References: 1 , 2 , 5 , 6 .

High resolution photo reconnaissance; returned film in two small SpK capsules during the mission and with the main capsule at completion of the mission. References: 1 , 2 , 6 , 179 .

Carried COSPAS/SARSAT search and rescue package. Civilian navigation satellite. Positioned in plane 14 of constellation. Maritime navigation. Signals at 150,00 MHz and 400.00 MHz. References: 2 , 5 , 6 .

Repaired solar array. Inspected exterior of station. References: 66 .

Stationed at 119 deg W.