Progress 5 (), was a

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

unmanned

Progress Progress is the movement towards a refined, improved, or otherwise desired state. In the context of progressivism, it refers to the proposition that advancements in technology, science, and social organization have resulted, and by extension wi ...

cargo spacecraft which was launched in 1979 to resupply the

Salyut 6 Salyut 6 (russian: Салют-6; lit. Salute 6), DOS-5, was a Soviet orbital space station, the eighth station of the Salyut programme. It was launched on 29 September 1977 by a Proton rocket. Salyut 6 was the first space station to receiv ...

space station. Served as a receptacle for contaminated fuel from the damaged Salyut 6 propulsion system.

Spacecraft

Progress 5 was a Progress 7K-TG spacecraft. The fifth of forty three to be launched, it had the

serial number A serial number is a unique identifier assigned incrementally or sequentially to an item, to ''uniquely'' identify it. Serial numbers need not be strictly numerical. They may contain letters and other typographical symbols, or may consist enti ...

104. The Progress 7K-TG spacecraft was the first generation

, derived from the

Soyuz 7K-T The second generation of the Soyuz spacecraft, the ''Soyuz 7K-T'', comprised Soyuz 12 through Soyuz 40 (1973-1981). In the wake of the Soyuz 11 tragedy, the spacecraft was redesigned to accommodate two cosmonauts who would wear pressure suit ...

and intended for uncrewed logistics missions to space stations in support of the

Salyut programme The ''Salyut'' programme (russian: Салют, , meaning "salute" or "fireworks") was the first space station programme, undertaken by the Soviet Union. It involved a series of four crewed scientific research space stations and two crewed m ...

. On some missions the spacecraft were also used to adjust the orbit of the space station. The Progress spacecraft had a dry mass of , which increased to around when fully fuelled. It measured in length, and in diameter. Each spacecraft could accommodate up to 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.

Launch

Progress 5 launched on 12 March 1979 from the

Baikonur Cosmodrome The Baikonur Cosmodrome ( kk, Байқоңыр ғарыш айлағы, translit=Baiqoñyr ğaryş ailağy, ; russian: Космодром Байконур, translit=Kosmodrom Baykonur, ) is a spaceport in an area of southern Kazakhstan leased to R ...

in the

Kazakh Soviet Socialist Republic ; kk, Қазақ Советтік Социалистік Республикасы) *1991: Republic of Kazakhstan (russian: Республика Казахстан; kk, Қазақстан Республикасы) , linking_name = the ...

. It used a

Soyuz-U The Soyuz-U launch vehicle was an improved version of the original Soyuz rocket. Soyuz-U was part of the R-7 family of rockets based on the R-7 Semyorka missile. Members of this rocket family were designed by the TsSKB design bureau and cons ...

rocket.

Docking

Progress 5 docked with Salyut 6 on 14 March 1979 at 07:19:21 UTC.

Decay

It remained in orbit until 5 April 1979, when it was deorbited. The deorbit burn occurred at 01:04 UTC.

References

{{Orbital launches in 1979 Progress (spacecraft) missions 1979 in the Soviet Union Spacecraft launched in 1979 Spacecraft which reentered in 1979 Spacecraft launched by Soyuz-U rockets

Spacecraft

Launch

Docking

Decay

See also

References