SpaceX lifts 33-engine Starship Super Heavy booster onto launch pad (photo)

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SpaceX’s latest Starship Super Heavy booster is back on the launch pad, this time with its full complement of 33 engines.

SpaceX placed the Super Heavy prototype, known as Booster 7, onto its orbital launch mount at Starbase, the company’s South Texas facility, on Tuesday (Aug. 23). The heavy lifting was done by “Mechazilla,” as SpaceX founder and CEO Elon Musk has dubbed Starbase’s 469-foot-tall (143-meter tall) launch tower.

Musk celebrated the milestone on Tuesday via Twitter, posting a photo (opens in new tab) of Booster 7 grasped in Mechazilla’s “chopstick” arms. “Mechazilla loads Starship on launchpad,” the billionaire entrepreneur wrote.

Related: SpaceX fires up Starship Super Heavy booster again in long engine test

Mechazilla loads Starship on launchpad 24, 2022

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Booster 7 has been atop this launch mount before. Earlier this month, SpaceX conducted two “static fire” tests with Booster 7, firing the vehicle up while it remained attached to the mount.

Both of those tests — which occurred on Aug. 9 and Aug. 11, respectively — lit up just a single Raptor engine (apparently, a different one each time). And Booster 7 wasn’t fully outfitted at the time, sporting just 20 of its 33 engines (opens in new tab) (the vast majority of which stayed dormant during the tests).

After the Aug. 11 test, SpaceX lifted the Super Heavy prototype off the mount and hauled it back to a processing bay at Starbase. Technicians installed the remaining 13 Raptors and got it ready for Tuesday’s move back to the pad.

More static fire tests are in the offing, likely culminating in one that lights up all 33 of Booster 7’s Raptors at once. Such work will help pave the way for a huge milestone that SpaceX aims to achieve in the next few months: the Starship program’s first-ever orbital test flight.

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The Starship system consists of the Super Heavy booster and Starship, a 165-foot-tall (50 meters) upper-stage spacecraft. Both of these elements are designed to be fully reusable and both are powered by Raptors; the upper-stage Starship will sport six of the next-generation engines.

The upcoming orbital test flight will launch Booster 7 and an upper-stage prototype known as Ship 24. Ship 24 has been getting a prelaunch workout as well; the vehicle ignited two of its six engines during a static fire test of its own at Starbase on Aug. 9.

Mike Wall is the author of “Out There (opens in new tab)” (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall (opens in new tab). Follow us on Twitter @Spacedotcom (opens in new tab) or on Facebook (opens in new tab).  


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