| 词条 | TGK PG |
| 释义 |
| name =TGK PG | image = | image_size = | image_alt = | image_caption = | manufacturer =RSC Energia | designer = | country =Russia | operator =Roscosmos | applications =Space station resupply | spacecraft_type =Automated cargo spacecraft | spacecraft_bus = | constellation = | design_life = | launch_mass ={{convert|8180|kg|abbr=on}} | dry_mass = | payload_capacity ={{convert|3400|kg|abbr=on}} | crew_capacity = | dimensions = | volume ={{convert|18|m3|abbr=on}} | power = | batteries = | equipment = | orbits = | status =Proposal | built = | orders = | launched = | operational = | retired = | failed = | lost = | first = post 2020 (planned) | last = | lastretired = | derivedfrom =Progress-MS & Federation | derivatives = | subsatellites = | subsatellite_of = | flown_with = | insignia = | insignia_size = | insignia_alt = | insignia_caption = | bottom_image = | bottom_image_size = | bottom_image_alt = | bottom_image_caption = | previous = Progress-MS | next = }}TGK PG ({{Lang-ru|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] The initial development contract was awarded to RSC Energia by Roscosmos on Dec. 11, 2015. The spacecraft is not expected to fly before 2020.[3][4] Spacecraft descriptionBorn 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 Federation 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 maneuvering 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{{Portal|Spaceflight}}
References1. ^1 {{cite web |url=http://www.energia.ru/ru/news/news-2016/news_09-05_1.html |title=РКК "Энергия" разрабатывает грузовой космический корабль повышенной грузоподъемности |trans-title=RSC Energia to develop cargo spaceship with increased payload |publisher=RSC Energia |date=September 5, 2016 |language=Russian |access-date=2016-09-05 |df= }}{{dead link|date=December 2017|bot=medic}}{{cbignore|bot=medic}} [1][2][3]2. ^1 2 3 {{cite web |url=http://www.russianspaceweb.com/tgk-pg.html |title=Progress cargo ship replacement proposed |last=Zak |first=Anatoly |publisher=RussianSpaceWeb |date=September 3, 2016 |access-date=2016-09-05}} 3. ^1 {{cite web |url=http://www.popularmechanics.com/space/a22477/russia-new-cargo-space-ship/ |title=A First Peek at Russia's New Space Cargo Ship |last=Zak |first=Anatoly |publisher=Popular Mechanics |archive-url=https://web.archive.org/web/20160826064043/http://www.popularmechanics.com/space/a22477/russia-new-cargo-space-ship/ |archive-date=2016-08-26 |date=August 22, 2016 |access-date=2016-09-05 |deadurl=yes |df= }} }} External links
3 : Proposed spacecraft|Cargo spacecraft|Space program of Russia |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。