| Names | Progress 91 ISS 91P |
|---|---|
| Mission type | ISS resupply |
| Operator | Roscosmos |
| COSPAR ID | 2025-041B |
| SATCATno. | 63129 |
| Mission duration | 27 days, 2 hours and 43 minutes (in progress) |
| Spacecraft properties | |
| Spacecraft | Progress MS-30 No. 460[1] |
| Spacecraft type | Progress MS |
| Manufacturer | Energia |
| Launch mass | 7,280 kg (16,050 lb)[2] |
| Start of mission | |
| Launch date | 27 February 2025, 21:24:27 UTC (28 February 2025, 02:24:27 AQTT)[2] |
| Rocket | Soyuz-2.1a (No. M15000-076) |
| Launch site | Baikonur,Site 31/6 |
| Contractor | RKTs Progress |
| End of mission | |
| Disposal | Deorbited(planned) |
| Decay date | August 2025(planned) |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 51.65° |
| Docking withISS | |
| Docking port | Zvezda aft |
| Docking date | 1 March 2025, 23:02:30 UTC |
| Undocking date | August 2025(planned) |
| Time docked | 25 days, 1 hour and 5 minutes (in progress) |
| Cargo | |
| Mass | 2,599 kg (5,730 lb) |
| Pressurised | 1,179 kg (2,599 lb) |
| Fuel | 950 kg (2,090 lb) |
| Gaseous | 50 kg (110 lb) |
| Water | 420 kg (930 lb) |
Progress MS-30 (Russian:Прогресс МC-30), Russian production No. 460, identified byNASA asProgress 91, is aProgress spaceflight launched byRoscosmos to resupply theInternational Space Station (ISS). It is the 183rd flight of a Progress spacecraft.
The Progress MS-30 cargo spacecraft was assembled byEnergia in September 2024 and transported by rail from its manufacturing facility inKorolev, Russia to theBaikonur Cosmodrome in Kazakhstan, arriving by the end of the month. Final testing and processing began in mid-January 2025, with propellant and pressurized gas loading completed on 16 February. The loading of food and other supplies into the pressurized compartment followed on 18 February.[3]
On 20 February, the spacecraft was attached to the launch vehicle adapter, and the next day, it was enclosed within the payload fairing, which featured an insignia commemorating the 100th birthday ofPavel Belyayev, commander of theVoskhod 2 mission that conducted the world's first spacewalk in 1965. The encapsulated spacecraft was transported by rail to Site 31/6 on 22 February and integrated with theSoyuz-2.1a rocket by 24 February. The rocket was rolled out to the launch pad on 25 February.[3]
Progress MS-30 launched on 27 February 2025 at 21:24:27 UTC (28 February 2025 at 02:24:27 AQTT, local time at the launch site).[2] Following a two-day free flight, it is scheduled to dock with the aft port of the ISS'sZvezda module on 1 March at 23:03 UTC.[3]
Each Progress mission delivers over a thousand kilograms of supplies in its pressurized section, accessible to crewmembers. These supplies include consumables such as food, water, and air, along with equipment for maintenance and scientific research. In its unpressurized section, the spacecraft carries tanks of water, fuel, and gases to replenish the station’s resources and sustain its onboard atmosphere. These resources are transferred to the station through an automated process.[4]
For this mission, Progress MS-30 was loaded with a total of 2,599 kg (5,730 lb) of cargo and supplies prior to launch. The cargo manifest includes the following:[3]
Among the supplies loaded into the pressurized compartment was a newOrlan-MKS spacesuit.[3]
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