SpaceX Reuses A Rocket To Launch A Satellite
April 4, 2017 • 112 views
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The most expensive part of doing anything in space is getting there. A private spaceflight company called SpaceX thinks it can change that, and Thursday’s successful reuse of a rocket was a big reinforcer to this belief. The previously launched rocket landed vertically on a barge in the Atlantic Ocean a few minutes after the launch. SpaceX launched a communications satellite from the Kennedy Space Center in Florida using a rocket that had already been to space and back. SpaceX believes that this kind of recycling will lower its costs. The aerospace industry essentially has been throwing away its used rockets. Partway into orbit, the big, expensive first stage falls off and plunges back to Earth.
“It’s a unique business model within the transportation sector,” says Bobby Braun, the Dean of the College of Engineering and Applied Science at the University of Colorado, Boulder. He says to see how strange it is, imagine flying from Denver to Washington, D.C.: “When I got there, the airline wouldn’t throw away that airplane and put me on a new one to bring me back a few days later,” he says.
Braun says there have been attempts to reuse rockets before, most notably the space shuttle, which could be relaunched multiple times. But he says the shuttle was a complex machine that was expensive to run. “It required a standing army of people to keep it operational,” he says.
SpaceX founder Elon Musk thinks that reusing the much simpler stages from his Falcon 9 rockets will also save money: “I try to tell my team to imagine that there was a pallet of cash that was plummeting through the atmosphere, and it was going to burn up and smash into tiny pieces, would you try to save it? Probably yes,” he told attendees of last year’s Code Conference.
That philosophy is why SpaceX rockets don’t crash back to Earth anymore. Instead, they come back and land vertically on a barge in the middle of the ocean (the rockets also can land at the launch site). The company’s first ocean landing happened almost exactly a year ago, and Thursday it took that exact same rocket and launched it again.
The main question at hand is how many times can they reuse a rocket in order save money and it still be safe and functional. This idea will further be used down the road, as SpaceX is planning to send paying customers on round trips to the moon in 2018.