Development of the Commercial Crew Program

Starting from top image: the Boeing CST-100 Starliner, Crew Dragon, Dream Chaser, and at bottom human-rated Atlas V projects all received developmental funding through CCDev awards and contracts

Development of the Commercial Crew Program began in the second round of the Commercial Crew Development (CCDev) program, which was rescoped from a technology development program for human spaceflight to a competitive development program that would produce the spacecraft to be used in the Commercial Crew Program to provide crew transportation services to and from the International Space Station (ISS). To implement the program NASA awarded a series of competitive fixed-price contracts to private vendors starting in 2011. Operational contracts to fly astronauts were awarded in September 2014 to SpaceX and Boeing, and NASA expected each company to complete development and achieve crew rating in 2017.[1] Each company performed an uncrewed orbital test flight in 2019. SpaceX operational flights started in November 2020.

Both commercial Crew vehicles Crew Dragon and Starliner docked to ports on Harmony module at the same time

SpaceX's Crew Dragon Demo-1 2019 flight of Dragon 2 arrived at the International Space Station in March 2019 and returned via splashdown in the Atlantic Ocean. After completion of its test series, a Crew Dragon spacecraft made its first operational Commercial Crew Program flight, SpaceX Crew-1. The flight launched on 16 November 2020.[2] As of September 2023 SpaceX has completed seven successful CCP flights with another, SpaceX Crew-8, currently in progress. It is contracted with NASA for fourteen operational flights total to the ISS.

The 2019 Boeing Orbital Flight Test of the CST-100 Starliner spacecraft failed to reach the ISS in December 2019. The second test flight, Boeing Orbital Flight Test 2, occurred successfully in May 2022.[3][4][5] Pending completion of its demonstration flights, Boeing is contracted to supply six operational flights to the ISS.[6] The first group of astronauts was announced on 3 August 2018.[7] As of April 2024 the first operational Starliner flight is scheduled for May 6, 2024.[8]

Commercial Crew Program vehicles Starliner and Dragon
  1. ^ Cite error: The named reference CCtCapBlogAnnounce was invoked but never defined (see the help page).
  2. ^ "Astronauts fly with SpaceX in landmark launch for commercial spaceflight". Spaceflight Now. 16 November 2020. Retrieved 18 November 2020.
  3. ^ Foust, Jeff (13 August 2021). "Starliner test flight faces months-long delay". SpaceNews. Retrieved 13 August 2021.
  4. ^ "Boeing Starliner test flight planned for spring 2022". SpaceNews. 2021-12-20. Retrieved 2022-03-27.
  5. ^ Berger, Eric (2021-12-14). "Leaky valve issue forces Boeing to swap out Starliner's service module". Ars Technica. Retrieved 2022-03-27.
  6. ^ "Boeing, SpaceX Secure Additional Crewed Missions Under NASA's Commercial Space Transport Program". 4 January 2017.
  7. ^ "NASA Assigns Crews to First Test Flights, Missions on Commercial Spacecraft". NASA. August 3, 2018.
  8. ^ "Boeing's 1st Starliner astronaut launch delayed again, to May 6". Space.com. 3 April 2024.

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