TGK PG

TGK PG (Russian: Транспортный Грузовой Корабль Повышенной Грузоподъемности (ТГК ПГ), lit. 'Cargo vehicle with increased payload capacity') is an automated cargo spacecraft project to replace Progress-MS as the Russian logistic vehicle to the ISS. It was requested for development to take advantage of the increased lift capacity of the Soyuz-2.1b.[1][2] The initial development contract was awarded to RSC Energia by Roscosmos on December 11, 2015. The spacecraft is not expected to fly before 2020.[3][4]

TGK PG
ManufacturerRSC Energia
Country of originRussia
OperatorRoscosmos
ApplicationsSpace station resupply
Specifications
Spacecraft typeAutomated cargo spacecraft
Launch mass8,180 kg (18,030 lb)
Payload capacity3,400 kg (7,500 lb)
Volume18 m3 (640 cu ft)
Production
StatusProposal
Maiden launchpost 2020 (planned)
Related spacecraft
Derived fromProgress-MS & Orel
← Progress-MS

Spacecraft description

Born out of the need to reduce the flights to the ISS from 2018 onward, it was designed as a radical departure from the Progress design. It would incorporate concepts and technologies developed from the Orel and Progress-MS projects. One critical characteristic would be a 370 days on-orbit design life, compared to the 210 days of the Progress and Soyuz. This would allow less ships to be launched per year while maintaining a full complement on the station.[3] It would consist of a service module on the aft, an unpressurized propellant cluster of six tanks on the center, a pressurized module with docking adapter on the fore and a truss structure connecting all the parts. It would use the reaction control system of the Progress-MS and an orbital manoeuvring rocket engine already developed for another spacecraft. The new design would have a single deposit of propellant that could be used by the spacecraft or to refuel the space station.[3]

See also

References
  1. "РКК "Энергия" разрабатывает грузовой космический корабль повышенной грузоподъемности" [RSC Energia to develop cargo spaceship with increased payload] (in Russian). RSC Energia. September 5, 2016. Retrieved 2016-09-05.
  2. "РКК "ЭНЕРГИЯ" РАЗРАБАТЫВАЕТ ГРУЗОВОЙ КОСМИЧЕСКОЙ КОРАБЛЬ ПОВЫШЕННОЙ ГРУЗОПОДЪЕМНОСТИ" [RSC Energia to develop cargo spaceship with increased payload] (in Russian). RSC Energia. September 5, 2016. Archived from the original on 2016-09-06. Retrieved 2016-09-05.
  3. Zak, Anatoly (September 3, 2016). "Progress cargo ship replacement proposed". RussianSpaceWeb. Retrieved 2016-09-05.
  4. Zak, Anatoly (August 22, 2016). "A First Peek at Russia's New Space Cargo Ship". Popular Mechanics. Archived from the original on 2016-08-26. Retrieved 2016-09-05.


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