Progress MS-08
{{short description|2018 Russian resupply spaceflight to the ISS}}
{{Use British English|date=May 2020}}
{{Use dmy dates|date=May 2020}}
{{Infobox spaceflight
| name = Progress MS-08
| names_list = Progress 69P
| image = Progress_MS-08_docks_to_ISS_%282%29.jpg
| image_caption = Progress MS-08 approaches
the ISS on 15 February 2018
| image_size = 290px
| mission_type = ISS resupply
| operator = Roscosmos
| COSPAR_ID =
| SATCAT =
| mission_duration = 197 days
| spacecraft = Progress MS-08 s/n 438
| spacecraft_type = Progress-MS
| manufacturer = Energia
| launch_mass = 7430 kg
| dry_mass =
| payload_mass = 2494 kg
| dimensions =
| power =
| launch_date = 13 February 2018,
08:13:33 UTC
| launch_rocket = Soyuz-2.1a (s/n U15000-030)
| launch_site = Baikonur, Site 31/6
| launch_contractor = RKTs Progress
| disposal_type = Deorbited
| decay_date = 30 August 2018
| orbit_reference = Geocentric orbit
| orbit_regime = Low Earth orbit
| orbit_inclination = 51.67°
| apsis = gee
| docking = {{Infobox spaceflight/Dock
| docking_target = ISS
| docking_type = dock
| docking_port = Zvezda
| docking_date = 15 February 2018, 10:38 UTC
| undocking_date = 23 August 2018, 02:16 UTC
| time_docked = 188 days
}}
| payload_items =
| cargo_mass = 2494 kg
| cargo_mass_press = 1388 kg
| cargo_mass_fuel = 640 kg
| cargo_mass_gas = 46 kg
| cargo_mass_water = 420 kg
| insignia =
| insignia_caption =
| insignia_size =
| programme = Progress flights
| previous_mission = Progress MS-07
| next_mission = Progress MS-09
}}
Progress MS-08 ({{Langx|ru|Прогресс МC-08|italic=yes}}), identified by NASA as Progress 69P, was a Progress spaceflight, operated by Roscosmos to resupply the International Space Station (ISS).
History
The Progress-MS is an uncrewed freighter based on the Progress-M featuring improved avionics. This improved variant first launched on 21 December 2015. It has the following improvements:
- New external compartment that enables it to deploy satellites. Each compartment can hold up to four launch containers. First time installed on Progress MS-03.
- Enhanced redundancy thanks to the addition of a backup system of electrical motors for the docking and sealing mechanism.
- Improved Micrometeoroid (MMOD) protection with additional panels in the cargo compartment.
- Luch Russian relay satellites link capabilities enable telemetry and control even when not in direct view of ground radio stations.
- GNSS autonomous navigation enables real time determination of the status vector and orbital parameters dispensing with the need of ground station orbit determination.
- Real time relative navigation thanks to direct radio data exchange capabilities with the space station.
- New digital radio that enables enhanced TV camera view for the docking operations.
- The Ukrainian Chezara Kvant-V on board radio system and antenna/feeder system has been replaced with a Unified Command Telemetry System (UCTS).
- Replacement of the Kurs A with Kurs NA digital system.
Launch
Progress MS-08 launched on 13 February 2018 from the Baikonur Cosmodrome in Kazakhstan atop a Soyuz-2.1a rocket, at 08:13:33 UTC.
Docking
Progress MS-08 docked on 15 February 2018 with the aft docking port of the Zvezda module, at 10:38 UTC.
Cargo
The Progress MS-08 spacecraft delivered 2,494 kg of cargo and supplies to the International Space Station.
The following is a breakdown of cargo bound for the ISS:
- Dry cargo: 1,390 kg
- Fuel: 890 kg
- Oxygen and Air: 46 kg
- Water: 430 kg
Progress MS-08 also includes two nanosatellites: Tanyusha YuZGU-3 (1998-067PJ) and Tanyusha YuZGU-4 (1998-067PK) (a.k.a. Radioskaf RS-8 and Radioskaf RS-9) with a mass of 2.5 kg, which was developed jointly by RKK Energia and students at the South-Western State University, YuZGU, in the city of Kursk. The satellites will be launched by spacewalking cosmonauts.
Undocking and decay
Undocking on 23 August 2018, at 02:16 UTC. And decay in the atmosphere and its debris entered the Pacific Ocean, on 30 August 2018.
References
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{{Progress spacecraft}}
{{Uncrewed ISS flights}}
{{Orbital launches in 2018}}
Category:Progress (spacecraft) missions
Category:Spacecraft launched in 2018
Category:Supply vehicles for the International Space Station