NASA/Northrop Grumman - Cygnus NG-21 - Release from the ISS - March 28, 2025
Автор: SPACE AFFAIRS
Загружено: 2025-03-28
Просмотров: 2575
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Coverage of Northrop Grumman’s NG-21 Cygnus spacecraft release from the International Space Station. Release scheduled for 6:55 a.m. EDT, 1055 UTC, 11:55 CET, March 28, 2025.
NG-21 is the twenty-first flight of the Cygnus, an expendable American cargo spacecraft used for International Space Station (ISS) logistics missions, launched on 4 August 2024. It is operated by Northrop Grumman under a Commercial Resupply Services contract with NASA. The spacecraft is an Enhanced Cygnus, named the S.S. Francis R. "Dick" Scobee in honor of the NASA astronaut who died in the Space Shuttle Challenger disaster.
NG-21 is the second launch of a Cygnus spacecraft after Northrop Grumman exhausted the supply of its Antares 230+ rocket. The Antares used a Russian-built engine and Ukrainian-built first stage, and production ceased after the Russian invasion of Ukraine. Northrop Grumman expects its next-generation Antares 300 rocket that does not depend on Ukrainian or Russian parts to be ready to fly NG-23. As an interim solution, Northrop Grumman contracted with its CRS competitor SpaceX to launch NG-20, 21 and 22 using its Falcon 9 Block 5 rocket.
Cargo:
Mass: 3,857 kg (8,503 lb)
Pressurised: 3,843 kg (8,472 lb)
Unpressurised: 14 kg (31 lb)
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