Falcon 9 booster B1056

Falcon 9 booster B1056 was a reusable Falcon 9 Block 5 first-stage booster manufactured by SpaceX. The booster was the fourth Falcon 9 to fly four times and broke a turnaround record for an orbital class booster on its fourth flight. The booster's service came to an end on its fourth flight following a landing failure on a Starlink flight.[1]

Falcon 9 booster B1056
B1056 lands after launching CRS-18
Role First stage of orbital class rocket
National origin United States
Type Falcon 9 first stage booster
Manufacturer SpaceX
Construction number B1056
First flight 4 May 2019 (CRS-17)
Last flight 17 February 2020 (Starlink L4)
Flights 4
Status Intentionally sunk after surviving a water landing

Flight history

First flight

B1056 entered service on May 4, 2019, lofting a Dragon to the International Space Station in support of CRS-17. The vehicle landed aboard the autonomous spaceport drone ship Of Course I Still Love You approximately eight and a half minutes after launch.[2] Normally, first stages supporting CRS missions land at LZ-1, however a failed static fire of a Crew Dragon contaminated the landing pad. This forced B1056 to land just 28km downrange on OCISLY.[3]

Second flight

On July 25 2019, B1056 launched a second CRS mission, carrying a Dragon to the ISS in support of CRS-18. Following stage separation, B1056 landed at Landing Zone 1 at Cape Canaveral Air Force Station. This flight demonstrated the first time a Dragon spacecraft flew for a third time.[4]

Third flight

B1056 made its third flight on December 16, 2019, carrying JCSAT-18/Kacific-1 to geostationary transfer orbit. About eight minutes after launch, B1056 landed on Of Course I Still Love You - completing its first GTO mission.[5]

Fourth flight

B1056 became the fourth booster to re-fly a fourth time, also breaking a turnaround record, achieving just 63 days between its previous flight. The previous record was held by B1045 for nearly two years. The SpaceX record still has not broken the world record for turn around which goes to Space Shuttle Atlantis which turned around in just 54 days.[6] The flight was expected to be the 50th successful landing [7] but ended up being the first time a flight-proven booster suffered a landing failure due to incorrect wind prediction. The booster was initially reported to be intact but was subsequently scuttled and did not return to port.[8]

Launches
Flight # Launch date (UTC) Mission # Payload Pictures Launch pad Landing location Notes
1 May 4, 2019 70 CRS-17 SLC-40 Of Course I Still Love You Landed on droneship due to contamination of ground pad
2 July 25, 2019 73 CRS-18 SLC-40 LZ-1 Carried the third International Docking Adapter
3 December 16, 2019 77 JCsat-18 SLC-40 Of Course I Still Love You Originally scheduled to fly on CRS-19, the booster was swapped out for a new booster
4 February 17, 2020 81 Starlink L4 CC-40 style="background: #ffbbbb; color: black; vertical-align: middle; text-align: center; " class="table-failure" | Failure

Of Course I Still Love You

 Flight carrying 60 Starlink satellites. Was the fastest turn around of a booster, breaking the record held by B1045 since June 2018. First flight proven booster to fail landing


References
  1. Baylor, Michael. "SpaceX successfully conducts fifth Starlink flight - booster misses dronship". NASASpaceflight. NASASpaceflight. Retrieved 25 February 2020.
  2. "CRS-17 Presskit" (PDF). spacex.com.
  3. Clark, Stephen. "SpaceX likely to move next rocket landing to drone ship – Spaceflight Now". Retrieved 2019-12-14.
  4. Thompson, Amy. "SpaceX Launches Used Dragon Capsule on Historic 3rd Cargo Run to Space Station". Space.com. Space.com. Retrieved 25 February 2020.
  5. "KACIFIC-1 PRESS KIT" (PDF). spacex.com.
  6. Baylor, Michael. "SpaceX successfully conducts fifth Starlink flight - booster misses dronship". NASASpaceflight. NASASpaceflight. Retrieved 25 February 2020.
  7. Davenport, Christian. "Elon Musk's SpaceX is about to land its 50th Falcon 9 booster". Washington Post. Washington Post. Retrieved 25 February 2020.
  8. C, Gavin. "B1056 scuttled at se". Twitter. SpacexFleet updates. Retrieved 25 February 2020.
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