Progress 1
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 | |
| Mission type | Salyut 6 resupply |
|---|---|
| Operator | OKB-1 |
| COSPAR ID | 1978-008A |
| SATCAT no. | 10603 |
| Mission duration | 18 days, 18 hours and 20 minutes |
| Spacecraft properties | |
| Spacecraft | Progress s/n 102 |
| Spacecraft type | Progress 7K-TG |
| Manufacturer | NPO Energia |
| Launch mass | 7020 kg |
| Dry mass | 6520 kg |
| Payload mass | 2300 kg |
| Dimensions | 7.48 m in length and 2.72 m in diameter |
| Start of mission | |
| Launch date | 20 January 1978, 08:24:40 UTC |
| Rocket | Soyuz-U s/n E15000-075 |
| Launch site | Baikonur, Site 31/6 |
| Contractor | OKB-1 |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 8 February 1978, 02:45 UTC |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Perigee altitude | 329 km |
| Apogee altitude | 348 km |
| Inclination | 51.66° |
| Period | 91.3 minutes |
| Epoch | 20 January 2020 |
| Docking with Salyut 6 | |
| Docking port | Aft |
| Docking date | 22 January 1978, 10:12:14 UTC |
| Undocking date | 6 February 1978, 05:54 UTC |
| Time docked | 14 days, 19 hours and 42 minutes |
| Cargo | |
| Mass | 2300 kg |
| Pressurised | 1300 kg |
| Fuel | 1000 kg |
Progress 1 (Russian: Прогресс 1), was a Soviet unmanned Progress cargo spacecraft which was launched in 1978 to resupply the Salyut 6 space station. It was the maiden flight of the Progress spacecraft, and used the Progress 7K-TG configuration. It carried supplies for the EO-1 crew aboard Salyut 6, which consisted of Soviet cosmonauts Yuri Romanenko and Georgy Grechko. The cargo carried by Progress 1 also included equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres.
Progress 1 was a Progress 7K-TG spacecraft. The first of forty three to be launched,[1] it had the serial number 102.[2] The Progress 7K-TG spacecraft was the first generation Progress, derived from the Soyuz 7K-T and intended for unmanned logistics missions to space stations in support of the Salyut programme.[3] The spacecraft were also used on some missions to adjust the orbit of the space station.[4]
The Progress spacecraft had a dry mass of 6,520 kilograms (14,370 lb), which increased to around 7,020 kilograms (15,480 lb) when fully fuelled. It measured 7.48 metres (24.5 ft) in length, and 2.72 metres (8 ft 11 in) in diameter. Each spacecraft could accommodate up to 2,500 kilograms (5,500 lb) of payload, consisting of dry cargo and propellant. The spacecraft were powered by chemical batteries, and could operate in free flight for up to three days, remaining docked to the station for up to thirty.[3][4]
Launch and docking
Progress 1 was launched at 08:24:40 UTC on 20 January 1978, atop a Soyuz-U 11A511U carrier rocket flying from Site 31/6 at the Baikonur Cosmodrome, USSR. The rocket that launched it had the serial number E15000-075.[5] Following launch, Progress 1 was given the COSPAR designation 1978-008A, whilst NORAD assigned it the Satellite Catalog Number 10603.[6]
Following launch, Progress 1 began two days of free flight. It subsequently docked with the aft port of the Salyut 6 space station at 10:12:14 UTC on 22 January 1978.[3][7] When the Progress spacecraft docked, the station's other docking port was occupied by the Soyuz 27 spacecraft.[8]
