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Elon Musk Upgrades Everything On Booster 7 Before First Orbital flight in Texas…
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Elon Musk Upgrades Everything On Booster 7 Before First Orbital Launch!
Thanks to progress made since 2021, SpaceX already has significant experience testing an earlier orbital-class Starship prototype on the ground, but the process of testing Booster is still fresh and unfamiliar for a number of reasons.
On top of major design changes made to Starship and Super Heavy over the last year as SpaceX continues to refine the rocket, the company also developed a substantially different version of its Raptor engine. Compared to Raptor V1, Raptor V2 almost looks like a new engine and can produce around 25% more thrust (230 tons versus 185 tons). SpaceX has also tweaked how the engine operates, particularly around startup and shutdown, further weakening the value of past experience testing Raptor V1 and V1.5 engines on Ship 20 and Boosters 3 and 4.
In other words, with Ship 24 and Booster 7 engine testing, it’s possible that SpaceX is effectively starting from scratch. Many aspects of testing – propellant conditioning, thermal characteristics, tanking, detanking, certain test stands – are likely mostly unchanged, but almost every aspect of a rocket is affected by its engines.
As a result, despite some of the simplifications in Raptor V2’s design, operating the engine on Super Heavy is much harder to get right.
Booster 7 kicked off the most important stage of its flight qualification process on August 9th and 11th with two back-to-back static fires, each igniting just one of 20 installed Raptor engines. Both appeared to be successful and SpaceX returned B7 to its Boca Chica, Texas factory, reinstalled a full set of 33 engines, and sent the Super Heavy back to the launch pad two weeks later.
Elon Musk Upgrades Everything On Booster 7 Before First Orbital Launch!
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