The upgrade to the Ariane 1 had a total cost of 144 million 1986 ECU's.

Replaced Cosmos 1124. Covered Oko constellation plane 4 - 39 degree longitude of ascending node. References: 1 , 2 , 5 , 6 , 100 .

Eight satellites launched by a single carrier rocket. References: 1 , 2 , 5 , 6 .

Photo surveillance; returned film capsule; maneuverable. References: 1 , 2 , 6 .

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

Defense Meteorological Satellite Program. Although there was a press release immediately after the launch (by the spacecraft SPO) that said the 2nd stage motor exploded, in reality the problem was found to be due to poor design of the electrical connectors between the 2nd and third stages and a separation problem that ripped the wiring out of the spacecraft. References: 5 .

Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 , 103 .

Transmission of color and black-and-white USSR central television programmes to a network of receivers for collective use. References: 1 , 2 , 5 , 6 , 67 , 274 .

Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international coope ration scheme). References: 1 , 2 , 5 , 6 .

Experimental-technology mission. Rohini satellite RS-1. References: 1 , 2 , 5 , 6 .

Manned two crew. Transported to the Salyut-6 station the sixth international crew under the Intercosmos programme, comprising V V Gorbatko (USSR) and Pham Tuan (Viet Nam), to conduct scientific research and experiments. Returned crew of Soyuz 35 to Earth. Recovered October 11, 1980 9:50 GMT. References: 1 , 2 , 6 , 32 , 33 , 51 .

Photo surveillance; returned film capsule; maneuverable. References: 1 , 2 , 6 .

3rd generation, high resolution photo surveillance; film capsule; maneuverable (?); also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 .

Radar calibration. Released 25 Romb radar calibration subsatellites. References: 1 , 2 , 5 , 6 .

Photo surveillance; returned film capsule; maneuverable. References: 1 , 2 , 6 .

First launch from Jingyu test site. References: 87 .

Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 , 103 .

Area survey 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 , 69 .

3rd generation, high resolution photo surveillance; film capsule; maneuverable; also performed earth resources tasks. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 .

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

Gathering meteorological information and data on penetrating radiation fluxes in circumterrestrial space. References: 1 , 2 , 5 , 6 .

Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 station the seventh international crew under the INTERCOSMOS programme, comprising Y V Romanenko (USSR) and A. Tomaio Mendez (Cuba), to conduct scientific research and experiments. Recovered September 26, 1980 15:54 GMT. References: 1 , 2 , 6 , 32 , 33 , 51 .

Photo surveillance; returned film capsule; maneuverable. References: 1 , 2 , 6 .

An Air Force repairman doing routine maintenance in a Titan II ICBM silo dropped a wrench socket, which rolled off a work platform and fell to the bottom of the silo. The socket struck the missile, causing a leak from a pressurized fuel tank. The missile complex and surrounding areas were evacuated. Eight and a half hours later, the fuel vapors ignited, causing an explosion which killed an Air Force specialist and injured 21 others. The explosion also blew off the 670-tonne reinforced concrete-and-steel silo door and catapulted the warhead 200 m into the air. The silo was later filled in with gravel.

Military topography satellite; returned film capsule; also performed mapping, geodesy, earth resources tasks; separated capsule. References: 1 , 2 , 6 .

Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation. References: 1 , 2 , 6 , 103 .

Unmanned supply vessel for Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 30 Sep 1980 17:03:00 GMT. Undocked on 9 Dec 1980 10:23:00 GMT. Destroyed in reentry on 11 Dec 1980 14:00:00 GMT. Total free-flight time 4.23 days. Total docked time 69.72 days. References: 1 , 2 , 6 , 275 .