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SpaceX Crew-4
Crew Dragon Freedom launches to the ISS with the crew members of Crew-4 onboard.
NamesUSCV-4
Mission typeISS crew transport
OperatorSpaceX
Mission duration6 months (planned)[1][2]
924 days and 3 hours (in progress)
Spacecraft properties
SpacecraftCrew Dragon Freedom
Spacecraft typeCrew Dragon
ManufacturerSpaceX
Launch mass12,519 kg (27,600 lb)
Landing mass9,616 kg (21,200 lb)
Crew
Crew size4
Members
ExpeditionExpedition 67 / 68
Start of mission
Launch date27 April 2022, 07:52:55 UTC[3]
RocketFalcon 9 Block 5 (B1067.4)
Launch siteKennedy Space Center, LC-39A
ContractorSpaceX
End of mission
Landing date13 October 2022 (planned)
Landing siteAtlantic Ocean / Gulf of Mexico
Orbital parameters
Reference systemGeocentric orbit
RegimeLow Earth orbit
Inclination51.64°
Docking with ISS
Docking portHarmony zenith
Docking date27 April 2022, 23:37 UTC
Undocking date12 October 2022 (planned)
Time docked923 days and 11 hours (in progress)

SpaceX Crew-4 mission patch

Hines, Cristoforetti, Watkins, and Lindgren (L-R)
Falcon 9 Block 5 unit B1060.12 launching SpaceX's Starlink Group 4-14 on the eve of SpaceX Crew-4 (Falcon 9 Block 5 B1067.4 and Crew Dragon Freedom)'s launch from LC-39A (left), with NASA's SLS moon rocket and Orion spacecraft for Artemis 1 on the right on LC-39B awaiting a rollback to the VAB for maintenance before Wet Dress Rehearsal, as an Atlas V N22 rocket is being assembled for Boeing OFT-2 in the ULA's VIF.

SpaceX Crew-4 is the Crew Dragon's fourth NASA Commercial Crew operational flight, and its seventh overall crewed orbital flight. The mission launched on 27 April 2022 at 07:52 UTC[4] before docking with the International Space Station (ISS) at 23:37 UTC. It follows shortly after the private Axiom 1 mission to the ISS earlier in the month utilizing SpaceX hardware. Three American (NASA) astronauts and one European (ESA) astronaut are onboard the mission.[5][6] [7]

Crew-4 is the maiden flight of the Crew Dragon spacecraft named Freedom, named such by the crew because it "celebrates a fundamental human right, and the industry and innovation that emanate from the unencumbered human spirit".[8] The booster used on this mission was the B1067, which makes it the first Commercial Crew mission to use a booster on its fourth flight (it previously was used to launch SpaceX Crew-3 in 2021).[9]

Crew

[edit]

NASA astronauts Kjell Lindgren and Robert Hines were announced on 12 February 2021 to the crew.[5][6] Samantha Cristoforetti was named the commander of Expedition 68 on 28 May 2021.[10] Jessica Watkins was named Mission specialist on 16 November 2021.[11] Cristoforetti was later removed as commander of Expedition 68 due to the shortening of the Crew-4 mission.[12]

Prime crew
Position Astronaut
Spacecraft commander United States Kjell N. Lindgren, NASA
Expedition 67 / 68
Second spaceflight
Pilot United States Robert Hines, NASA
Expedition 67 / 68
First spaceflight
Mission Specialist 1 Italy Samantha Cristoforetti, ESA
Expedition 67 / 68
Second spaceflight
Mission Specialist 2 United States Jessica Watkins, NASA
Expedition 67 / 68
First spaceflight
Backup crew
Position Astronaut
Spacecraft commander United States Steve Bowen, NASA
Pilot United States Not assigned, NASA
Mission Specialist 1 Not assigned
Mission Specialist 2 Not assigned

[13]

Mission

[edit]

The planned mission duration is around six months.[2] The European part of the mission is called Minerva,[14] named after the Roman goddess of wisdom,[15] and it is European astronaut Cristoforetti's second mission to the ISS.

Commercial Crew Program vehicles Starliner and Dragon

Timeline

[edit]
MET Time Date
(UTC) 		Event[16]
EDT UTC
−05:30:00 10:22:55 PM 02:22:55 27 April
2022 		CE launch readiness briefing
−05:00:00 10:52:55 PM 02:52:55 Launch shift on console
−04:59:59 10:52:56 PM 02:52:56 Dragon IMU align and configure for launch.
−04:30:00 11:22:55 PM 03:22:55 Dragon propellant pressurization
−04:20:SS 11:32:55 PM 03:32:55 Crew weather brief
−04:10:00 11:42:55 PM 03:42:55 Crew handoff
−04:00:00 11:52:55 PM 03:52:55 Suit donning and checkouts
−03:50:00 12:02:55 AM 04:02:55 ISS state upload to Dragon
−03:20:00 12:32:55 AM 04:32:55 Crew walk out of Neil Armstrong Operations and Checkout Building
−03:15:00 12:37:55 AM 04:37:55 Crew transportation to Launch Complex 39A (LC-39A)
−02:55:00 12:57:55 AM 04:57:55 Crew arrives at pad
−02:35:00 1:17:55 AM 05:17:55 Crew ingress
−02:20:00 1:32:55 AM 05:32:55 Communication check
−02:15:00 1:37:55 AM 05:37:55 Verify ready for seat rotation
−02:14:00 1:38:55 AM 05:38:55 Suit leak checks
−01:55:00 1:57:55 AM 05:57:55 Hatch close
−00:45:00 3:07:55 AM 07:07:55 SpaceX launch director verifies go for propellant load
−00:42:00 3:10:55 AM 07:10:55 Crew access arm retracts
−00:38:00 3:14:55 AM 07:14:55 Dragon launch escape system is armed.
−00:35:00 3:17:55 AM 07:17:55 RP-1 (rocket grade kerosene) loading begins; 1st stage LOX (liquid oxygen) loading begins.
−00:16:00 3:36:55 AM 07:36:55 2nd stage LOX loading begins.
−00:07:00 3:45:55 AM 07:45:55 Falcon 9 begins engine chill prior to launch.
−00:05:00 3:47:55 AM 07:47:55 Dragon transitions to internal power
−00:01:00 3:51:55 AM 07:51:55 Command flight computer to begin final prelaunch checks; propellant tank pressurization to flight pressure begins.
−00:00:45 3:52:10 AM 07:52:10 SpaceX launch director verifies go for launch.
−00:00:03 3:52:52 AM 07:52:52 Engine controller commands Merlin engine ignition sequence to start.
00:00:00 3:52:55 AM 07:52:55 Liftoff
+00:01:02 3:53:57 AM 07:53:57 Max Q (moment of peak mechanical stress on the launch vehicle)
+00:02:36 3:55:31 AM 07:55:31 1st stage main engine cutoff (MECO)
+00:02:39 3:55:34 AM 07:55:34 1st and 2nd stages separate
+00:02:47 3:55:42 AM 07:55:42 2nd stage engine starts
+00:07:28 4:00:23 AM 08:00:23 1st stage entry burn
+00:08:48 4:01:43 AM 08:01:43 2nd stage engine cutoff (SECO-1)
+00:09:02 4:01:57 AM 08:01:57 1st stage landing burn
+00:09:30 4:02:25 AM 08:02:25 1st stage landing
+00:11:59 4:04:54 AM 08:04:54 Crew Dragon separates from 2nd stage
+00:12:47 4:05:42 AM 08:05:42 Dragon nosecone open sequence begins
+1/ 3:31 AM 07:31 Dragon starts the final phase of the approach to the ISS.[17]
+1/03:33 05:08 AM 09:08 Soft capture to the ISS.[18]
+1/03:33 05:20 AM 09:20 Dragon docked to the ISS.[19]
+1/05:34 7:15 AM 11:15 Hatch opened.[20]

See also

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References

[edit]
  1. ^ Sheetz, Michael (27 April 2022). "SpaceX launches Crew-4 mission for NASA, has now sent 26 astronauts to space in under two years". CNBC. Retrieved 27 April 2022.
  2. ^ a b NASA (2022). "Crew-4 Mission Overview" (PDF). NASA. p. 1. Retrieved 27 April 2022. Crew-4 is scheduled for a long duration stay of up to six months aboard station conducting science and maintenance before returning to Earth in the fall of 2022.
  3. ^ Garcia, Mark. "SpaceX Crew-4 Launches to Join Station Crew Tonight". NASA. Retrieved 28 April 2022.
  4. ^ Amanda Griffin (22 April 2022). "NASA and SpaceX Adjust Agency's Crew-4 Launch Date". NASA. Retrieved 23 April 2022.
  5. ^ a b Finch, Joshua (25 April 2022). "Coverage Updated for NASA's SpaceX Crew-4 Briefing, Events, Broadcast". nasa.gov. NASA. Retrieved 27 April 2022. Public Domain This article incorporates text from this source, which is in the public domain.
  6. ^ a b Howell, Elizabeth (23 February 2021). "These 2 NASA astronauts will fly on SpaceX's Crew-4 mission to the International Space Station in 2022". Space.com. Retrieved 23 February 2021.
  7. ^ Ellis, Kathleen (18 March 2022). "NASA, SpaceX Adjust Target Launch Date for Crew-4 Mission". nasa.gov. NASA. Retrieved 18 March 2022.
  8. ^ Klotz, Irene (6 October 2021). "Forum - Crew-4". NASASpaceFlight.com. p. 2. Retrieved 30 October 2021.
  9. ^ @jeff_foust (19 January 2022). "Steve Stich says the Crew-4 flight will be the first commercial crew mission using a booster on its fourth flight" (Tweet). Retrieved 19 January 2022 – via Twitter.
  10. ^ "Commanding role for ESA astronaut Samantha Cristoforetti". ESA. 28 May 2021. Retrieved 28 May 2021.
  11. ^ "NASA Assigns Astronaut Jessica Watkins to NASA's SpaceX Crew-4 Mission". NASA. 16 November 2021. Retrieved 16 November 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  12. ^ "Revised flight plan brings change for Samantha". ESA. 2 March 2021. Retrieved 6 April 2021.
  13. ^ "Stephen G. Bowen (Captain, USN, Ret.) NASA Astronaut". NASA. 26 April 2021. Retrieved 28 May 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  14. ^ "Minerva: ESA astronaut Samantha Cristoforetti's second mission to the International Space Station". esa.int. ESA. Retrieved 18 March 2022.
  15. ^ European Space Agency (3 March 2022). "Minerva patch explained". European Space Agency. Retrieved 28 April 2022. Inspired by the Roman goddess of wisdom, the handicrafts and the arts, the name Minerva is a homage to the competence and sophisticated craftmanship of the men and women all over the world who make human spaceflight possible.
  16. ^ "Crew-4 mission timeline". Spaceflight Now.{{cite web}}: CS1 maint: url-status (link)
  17. ^ Garcia, Mark (24 April 2021). "NASA TV Covers SpaceX Crew-2 Docking to Station Today". blogs.nasa. Retrieved 24 April 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  18. ^ "SpaceX Crew Dragon Endeavour docks with ISS". france24.com. Retrieved 24 April 2021.
  19. ^ Cawley, James (24 April 2021). "Crew Dragon Docks to Station, Hatches Open Soon". blogs.nasa. Retrieved 13 December 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  20. ^ Cawley, James (17 November 2020). "Hatches Open, Crew Dragon Astronauts Join Expedition 64". blogs.nasa. Retrieved 13 December 2020. Public Domain This article incorporates text from this source, which is in the public domain.

Category:SpaceX Dragon 2 Category:Spacecraft launched in 2022 Category:SpaceX payloads contracted by NASA Category:SpaceX human spaceflights Category:2022 in the United States Category:Fully civilian crewed orbital spaceflights Category:International Space Station

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