— Quick facts —


Country: Russia
Operator: Roscosmos
Manufacturer: RSC Energia
Launch site: Baikonur Cosmodrome, Kazakhstan
Launch vehicle: Soyuz 2.1a
Reusable: No
Status: Active


Spacecraft mass: ~7,200 kg
Height: 7.48 m
Width: 2.72 m
Max. cargo: 2,400 kg
Return payload: None
Orbital life: About six months

Flight history

First flight: Progress 1, Jan. 20, 1978
Number flown: 160+
Variants: 7K-TG, M, M1, M-SO1, M-MIM2, M-M, MS
Failures: Progress M-12M in 2011, Progress M-27M in 2015 and Progress MS-04 in 2016
Stations serviced: Salyut 6, Salyut 7, Mir and ISS

A Soyuz 2.1a rocket stands ready to launch a Progress spacecraft. Photo Credit: NASA

A Soyuz 2.1a rocket stands ready to launch a Progress spacecraft. Photo Credit: NASA

— Sections —

Cargo Module

Width: 2.2 m
Max. Cargo: 1,700 kg
 Cargo volume: 6 m³

Like the Soyuz, the front of the spacecraft carries the equipment needed for rendezvous and docking. It also holds the pressurized cargo, including experiments, supplies and even fresh fruit.

The crew enters Progress through the forward hatch. The docking drogue, similar to Soyuz, also has ducting for fuel and oxidizer to be transferred to the International Space Station.

In special versions that carried the Pirs and Poisk modules to the space station, the Cargo and Refueling modules were replaced with the module.


Refueling Module

Width: 2.2 m
Max. Fuel: 1,740 kg
Tanks: 2 oxygen, 2 fuel and 2 water

Instead of a Descent Module, the Progress saves weight by eliminating all recovery items, including heat shields and parachutes. As thus, the spacecraft does not return to Earth intact. Instead it is guided into a destructive reentry over the Pacific Ocean.

This section carries six tanks: two for fuel, two for oxygen and two for water. The propellant in this module can be transferred to the space station, or be used to help boost the outposts orbit.


Propulsion Module

Mass: 2,600 kg
Width: 2.7 m
Width (w/ solar): 10.6 m

The propulsion module, similar to the Soyuz, is used for station re-boosting. It is also used to deorbit the spacecraft after it is no longer needed. Though, upon reentry the sections do not separate like the Soyuz.

Like Soyuz, this section contains fuel needed for rendezvousing and deorbiting. It also contains instruments for temperature control and equipment for long-range radio communications, power and telemetry.

Connected to the sides of the module are two solar panels. They are folded up prior to launch and extended upon reaching orbit. They provide power to the craft for the duration of the flight.

At the bottom of the module is the main engine, called SKD, that is used for maneuvering in orbit and to conduct the deorbit burn.


— Record —

All Progress flights, except three, have reached their destination.

On August 24, 2011, the Soyuz rocket carrying Progress M-12M failed to reach orbit due to an early cut-out of the boosters third stage. Additionally, Progress M-27M lost control and ran out of fuel after the a collision between it and the third stage of its booster rocket in May 2015.

More recently, Progress MS-04 failed to reach orbit. This was due to the third stage engine of the Soyuz launcher shutting down early, similar to the aforementioned Progress M-12M flight.

While it has an unparalleled safety record, one spacecraft collided with Mir in 1997 resulting in one of the modules to depressurize. The crew quickly sealed off that module.