Progress-M1

This article is about the 2000s spacecraft class. For the 1989 spacecraft, seeProgress M-1.

Progress-M1

A Progress-M1 spacecraft
Manufacturer	RKK Energia
Country of origin	Russia
Operator	Roskosmos
Applications	Space station logistics
Specifications
Regime	Low Earth
Design life	6 months
Production
Status	Retired
Built	11F615A55: 11 11F615A70: 0
Launched	11F615A55: 11 11F615A60: 0
Retired	11F615A55: 11
Maiden launch	11F615A55:Progress M1-1(2000) 11F615A70:Progress M1-01M(2011) (cancelled)
Last launch	11F615A55:Progress M1-11(2004)
Last retirement	11F615A55:Progress M1-11(2004)
Related spacecraft
Derived from	Progress-M

Progress-M1(Russian:Прогресс-М1,GRAU indices11F615A55and11F615A70), also known asProgress 7K-TGM1,is a Russian spacecraft which is used to resupplyspace stations.It is a variant of theProgressspacecraft, derived from theProgress-M,but modified to carry moreUDMHandN₂O₄propellant for refuelling theInternational Space Stationinstead of other cargoes such as water. A Progress M1 11F615A55 spacecraft could carry up to 1,700 kilograms (3,700 lb) of propellant in eight mid-section refuelling tanks,compared to the 850 kilograms (1,870 lb) that a Progress-M of the same generation could carry.This propellant can be transferred to the Space Station's own propulsion system through fluid connectors in the docking ring, or it can alternatively be used by the Progress' thrusters to boost the station altitude or to change its orientation, or attitude, in space. In addition to propellant, the spacecraft can also carry up to 1,800 kilograms (4,000 lb) (6 cubic meters volume) of supplies in its forward pressurized cargo module (including a maximum of 40 kilograms (88 lb) of compressed air), but the combination of pressurized cargo and refuelling propellant cannot exceed 2,500 kilograms (5,500 lb) or the maximum capability of the launch vehicle. Thetare weightof Progress-M1 is 5,050 kilograms (11,130 lb).ItsKTDU-80engine has a thrust of 2,950 newtons (660 lb_f) and uses up to 892 kilograms (1,967 lb) of propellant carried in four integrated spherical tanks for maneuvers such as docking and deorbiting the craft; 185 kilograms (408 lb) to 250 kilograms (550 lb) is typically left unused and hence available for the space station.

Progress M1-4,seen from the ISS

The Progress-M1 11F615A70 is a modernised variant of the earlier 11F615A55, with digital flight control systems replacing the earlier analogue ones. The older 11F615A55 spacecraft is no longer in use. It made eleven flights, the last of which,Progress M1-11,was deorbited in June 2004. The 11F615A70 was scheduled to make its first flight,Progress M1-01M,in 2011 but was cancelled.

Of the eleven 11F615A55 spacecraft launched, three flew toMir,with the remainder being used to resupply theInternational Space Station.Ten of the spacecraft were used for traditional resupply missions, whilst the eleventh,Progress M1-5,was used instead to deorbit the Mir space station.

Progress-M1 spacecraft are launched bySoyuzrockets. Eight of the 11F615A55 spacecraft were launched by theSoyuz-Uvariant, whilst the remaining three; thesixth,seventhandninthspacecraft, flew on theSoyuz-FG.11F615A70 launches are expected to use theSoyuz-2but was cancelled.

See also

• Automated Transfer Vehicle
• Cygnus spacecraft
• SpaceX Dragon