Falcon 9 B1048

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Falcon 9 booster B1048
Flag of the United States.svg SpaceX logo.png Falcon 9 logo by SpaceX.png
SAOCOM 1A Mission (44262177535).jpg
B1048 following its second landing
Role First stage of launch vehicle
National origin United States
Type Falcon 9 first-stage booster
Manufacturer SpaceX
Construction numberB1048
First flight25 July 2018 (Iridium-7)
Last flight18 March 2020 (Starlink L5)
Flights5
StatusDestroyed during landing

Falcon 9 booster B1048 was a reusable orbital-class Block 5 Falcon 9 first-stage booster manufactured by SpaceX. B1048 was the third Falcon 9 Block 5 to fly and the second Block 5 booster to re-fly. It became the second orbital-class booster to fly a third time and is the first booster ever to be launched five times. B1048 service came to an end on its fifth flight when an engine shut down prematurely on launch. Whilst the primary mission was unaffected and the Starlink payload deployed successfully, [1] B1048 was unable to land. In a subsequent investigation, SpaceX found that isopropyl alcohol, used as cleaning fluid, was trapped and ignited causing the engine to be shut down. To address the issue, in a following launch SpaceX indicated that the cleaning process was not done. [2] [3] [4]

Contents

Flight history

First flight

B1048 entered service on 25 July 2018, for the Iridium-7 mission. It was the third Falcon 9 Block 5 to enter service and the first to lift off from the west coast launch site at Vandenberg Air Force Base. The flight marked the 59th flight of the Falcon 9 and the 13th Falcon 9 flight for 2018. The booster lifted off despite the foggy weather and completed the two-and-a-half-minute burn before separating from the second stage and, despite stormy weather and choppy seas making booster recovery unlikely, the booster landed on the west coast Autonomous spaceport drone ship (ASDS) Just Read the Instructions in the roughest seas for a landing attempt at the time. This marked the 5th landing out of 6 landing attempts on JRTI. Fairing recovery was attempted during the flight but failed due to the weather. [5]

Second flight

Despite being the third Block 5 to fly, B1048 was refurbished quicker than the older booster, B1047, and became the second Falcon 9 Block 5 to re-fly. B1048 launched the 62nd Falcon 9 mission for the SAOCOM 1A mission from Vandenberg on October 8, 2018. Due to the twilight effect on launches from the west coast, spectacular views were seen from Los Angeles and other Southern California cities. [6] This mission was historic as it was the first Falcon 9 to perform a RTLS landing on the west coast, landing at LZ-4 just minutes after lifting off. [7]

Third flight

Following landing, B1048 was transported to the east coast and launched the Nusantara Satu mission on February 22, 2019. This marked the second time an orbital-class booster flew three times. The re-entry was the highest re-entry heating to date due to the high energy profile of the mission. [8] This caused the booster to also land further down range than a normal landing. Fairing recovery was planned for the mission but abandoned due to extremely rough weather. Despite the weather making it the hardest landing to date (even rougher than Iridium-7 which B1048 had endured on its maiden flight), B1048 successfully landed on the ASDS Of Course I Still Love You.

Fourth Flight

B1048 was originally scheduled to fly the in-flight abort test of the Crew Dragon; this would have brought B1048 service to an end after her fourth flight. [9] However, this was changed, and B1048 flew the Starlink Mission in November 2019 from SLC-40. On this mission, B1048 became the first Booster to fly four times and also featured for the first time re-used fairings. [10] B1048 successfully landed and returned home for future flights.

Fifth flight

B1048 flew a fifth time in March 2020, breaking the reusability record for Falcon 9. One of the engines shut down early on the ascent, and the booster failed to land. However, the primary Starlink 5 mission to launch 60 Starlink satellites to a low Earth orbit (LEO) was successful. [11]

Flight #Launch date (UTC) Mission # PayloadPicturesLaunch padLanding locationNotes
1July 25, 2018 59 Iridium-7 Iridium-7 Mission (41868222930).jpg VAFB, SLC-4E Just Read the Instructions (ASDS)Third flight of the Block 5 booster and roughest landing conditions for a Falcon 9 at the time
2October 8, 2018 62 SAOCOM 1A SAOCOM 1A Mission (45184770841).jpg VAFB, SLC-4E LZ-4 Second flight of a Block 5 booster
3February 22, 2019 68 Nusantara Satu
Beresheet 		Nusantara Satu Mission - 47173936181.jpg CCAFS, LC-40 Of Course I Still Love You (ASDS)Second time a booster is flown three times and the roughest landing condition for a Falcon 9 to date
4November 11, 2019 75 Starlink L1 45th SW supports successful launch of Falcon 9 Starlink (5903425).jpeg CCAFS, LC-40 Of Course I Still Love You (ASDS)Flight carried 60 Starlink satellites. The first time a Falcon 9 booster has flown four times and the first flight of a reused fairing.
5March 18, 2020 83 Starlink L5 B1048 Flights for the last time for the sixth starlink mission.jpg KSC, 39A Failure

Of Course I Still Love You (ASDS)

Flight carried 60 Starlink satellites. The first time a Falcon 9 booster has flown five times. Engine anomaly during ascent; booster failed to land.

B1048 records and achievements

See also

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References

  1. ↑ Atkinson, Ian (18 March 2020). "SpaceX successfully launches sixth Starlink launch despite engine issue". NASASpaceFlight.com. Retrieved 20 March 2020.
  2. ↑ Clark, Stephen. "Falcon 9 rocket overcomes engine failure to deploy Starlink satellites". Spaceflight Now. Retrieved 1 November 2020.
  3. ↑ Clark, Stephen. "SpaceX's Starlink network surpasses 400-satellite mark after successful launch". Spaceflight Now. Retrieved 1 November 2020.
  4. ↑ "Safety panel concludes May launch of commercial crew test flight is feasible". SpaceNews. 23 April 2020. Retrieved 1 November 2020.
  5. ↑ Dodd, Tim (25 July 2018). "SpaceX's flawless launch of Iridium 7 featuring lots of fog and a missed fairing recovery". Everyday Astronaut. Archived from the original on 21 February 2019. Retrieved 21 February 2019.
  6. ↑ Malik, Tariq (8 October 2018). "Spectacular SpaceX Rocket Launch Lights Up the Southern California Night Sky". Space.com . Retrieved 21 February 2019.
  7. ↑ Graham, William (7 October 2018). "SpaceX Falcon 9 launches with SAOCOM 1A and nails first West Coast landing". NASASpaceFlight.com . Retrieved 21 February 2019.
  8. ↑ @elonmusk (22 February 2019). "Highest reentry heating to date. Burning metal sparks from base heat shield visible in landing video. Fourth relight scheduled for April" (Tweet). Retrieved 22 February 2019– via Twitter.
  9. ↑ @elonmusk (22 February 2019). "Crew Dragon high altitude abort test" (Tweet). Retrieved 22 February 2019– via Twitter.
  10. ↑ Burghardt, Thomas (11 November 2019). "SpaceX and Cape Canaveral Return to Action with First Operational Starlink Mission". NASASpaceflight. NASASpaceflight. Retrieved 20 March 2020.
  11. ↑ "SpaceX successfully launches sixth Starlink launch despite engine issue". NASASpaceflight.com. 18 March 2020. Retrieved 18 March 2020.
  12. 1 2 "SpaceX and Cape Canaveral Return to Action with First Operational Starlink Mission". www.nasaspaceflight.com. 11 November 2019. Retrieved 13 November 2019.
  13. ↑ Lieu, Johnny (8 October 2018). "SpaceX lands its first rocket on West Coast ground". Mashable.
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