Private · SpaceXfirst
March 30, 2017
SES-10 — first reflight of an orbital-class rocket booster
On 30 March 2017, the Falcon 9 standing on Launch Complex 39A at Kennedy Space Center, the pad that sent Apollo crews to the Moon, was visibly secondhand. Its first stage, booster B1021, still wore the soot of its previous trip to space. A year earlier, on 8 April 2016, it had launched a Dragon cargo ship to the space station and made history as the first booster to land on an ocean drone ship. Now the Luxembourg-based satellite operator SES had bet a commercial spacecraft on the proposition that it could do all of it again.
SES had publicly volunteered to be first, with chief technology officer Martin Halliwell championing the deal as a step toward cheaper, more available access to space. In the evening the rocket lifted off, and the used stage performed indistinguishably from a new one, lofting the SES-10 communications satellite toward geostationary transfer orbit to serve Latin America. Then B1021 turned around, survived reentry a second time, and settled onto the drone ship Of Course I Still Love You in the Atlantic.
In the span of about ten minutes, a single booster had launched orbital payloads twice and landed twice, something no orbital-class rocket stage had ever done. An elated Elon Musk called it the culmination of fifteen years of work. The night held a quieter first as well: one half of the payload fairing, the nose cone Musk valued at several million dollars, glided to an intact ocean splashdown under thrusters and a steerable parachute, opening the path to fairing reuse.
B1021 was retired after its second flight and preserved for display, but the practice it proved became the foundation of modern spaceflight. 'Flight-proven' shifted from a euphemism customers feared into a status many preferred, the Block 5 Falcon 9 was redesigned for rapid repeated reuse, and within a few years individual boosters were flying more than twenty missions each. The economics of reaching orbit were never the same.
“This is going to be ultimately a huge revolution in spaceflight.”
Mission Data
Launch
30 Mar 2017, LC-39A, Kennedy Space Center
Booster
B1021, first flown on CRS-8, 8 Apr 2016
Turnaround
~12 months between flights
Payload
SES-10 communications satellite for Latin America
Landing
Drone ship Of Course I Still Love You, Atlantic
Bonus first
Payload fairing half recovered intact
Key Facts
The same stage made history twice: B1021 performed the first-ever drone-ship landing in April 2016 and the first reflight of an orbital-class booster a year later, then landed again.
SES volunteered to go first on a used rocket when no other customer would, and its CTO Martin Halliwell framed the gamble as opening a new era of lower-cost access to space.
The same night, SpaceX recovered a payload fairing half intact for the first time, flying it to a gentle splashdown with thrusters and a steerable parachute.
After its second flight, B1021 was retired and preserved for display rather than risked on a third mission, a museum piece from a revolution barely a year old.
What was a world-first in 2017 became routine within a few years, with individual Falcon boosters eventually flying more than twenty missions each.
Why It Mattered
The December 2015 landing proved a booster could come back; SES-10 proved that coming back was worth something. Reflight closed the economic loop at the heart of reusability, showing a recovered orbital-class stage could be inspected, recertified and trusted with a customer's revenue-generating satellite. That commercial endorsement, as much as the engineering, changed the industry: 'flight-proven' hardware became standard, launch prices and cadence shifted accordingly, and rivals worldwide reorganized their rocket programs around recovery and reuse. The fairing recovery the same night extended the logic to nearly the entire vehicle, setting the stage for the high-cadence, megaconstellation-driven launch market of the 2020s.
SpaceX
Official source
