Faster, Please! — The Podcast · Oct 23, 2024 · 27:19
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On October 13, SpaceX and Elon Musk successfully launched their Starship rocket into low-Earth orbit. Then, in a milestone moment for space technology, they successfully captured the rocket’s Super Heavy booster with “chopstick” arms on the launch tower upon reentry, marking the first time a booster was ever caught in mid-air.
The achievement is a mind-blowing feat of human engineering — one that hasn’t gotten nearly the recognition that it deserves. Today on Faster, Please! — The Podcast, I talk with must-read space journalist Eric Berger about the role of SpaceX in the new, 21st-century Space Race, the significance of the company’s achievements, and our potential to become a spacefaring, inter-planetary species.
Berger is the senior space editor at Ars Techica, and is the author of both Liftoff: Elon Musk and the Desperate Early Days that Launched SpaceX and his most recent excellent book, Reentry: SpaceX, Elon Musk, and the Reusable Rockets that Launched a Second Space Age.
In This Episode
* Starship’s big reentry (1:43)
* Race (back) to the moon (8:54)
* Why Starship? (11:48)
* The Mars-shot (18:37)
* Elon in the political area (22:10)
* Understanding SpaceX (24:06)
Below is a lightly edited transcript of our conversation
Starship’s big reentry (1:43)
James Pethokoukis: After the launch tower caught that booster stage of the rocket, I saw someone on Twitter a day later say, “Hey, do you guys remember over the weekend when SpaceX sent a Statue-of-Liberty-sized object to space and then caught it when it came back down? That was amazing!”
So two things: First, as a space guy, what was your reaction? Two, beyond the sheer coolness of it, why was this an important thing to happen?
It seemed inconceivable a few years ago, but now, all of a sudden, it's the future of rocketry, just like that.
Eric Berger: Just from a space perspective, it’s epic to see, to use your adjectives, the Statue of Liberty comparison. I mean, it's a small skyscraper, but they essentially launch that thing to space at thousands of miles per hour, then it slows down, it comes back right where it took off from, hovers, and it falls precisely into these two arms that are designed to catch it. The cool thing is that we'd never seen anything like that before. It seemed inconceivable a few years ago, but now, all of a sudden, it's the future of rocketry, just like that.
the significance of this, of course, is SpaceX has shown that with the reusability of the Falcon 9 rocket, it can really change the economics of launch. This year they've launched 101 times. No country had ever done that many launches before in a year. They're going to launch 95 percent of all the mass into orbit this year with primarily the Falcon 9 Rocket, and all that's because the first stage is entirely reusable, they're flying them more than 20 times now, and so they're just taking that and scaling it.
What was amazing about the tower catch this weekend was the fact that it really removes the need for landing legs. You may think, “Well, what's the big deal about that?” Well, there's a lot of mass involved with those landing legs: You need powerful actuators to drive them, you need hydraulic fluid, and that's a lot of dead mass in the vehicle. Also, it's not insignificant to transport the rocket from wherever it lands, either on a boat or on land, to the factory and to refurbish the rocket and launch again. Ideally, with this step, they're eliminating days from that process of reuse and ideally, in the future, they're literally going to be catching the rocket, setting it back on the launch mount and then potentially flying again.
So it's not just the Starship, right? So for the other launches, is this is going to become the landing procedure?
No, it will be just for Starship. They will continue to fly Falcon 9 as is. That's a mature product, everyone's pretty comfortable with that vehicle. But, look, other companies have tried different things. When Rocket Lab was trying to reuse its small Electron vehicle, its plan was to have the first stage come back under a parachute and then basically swoop in with a helicopter and catch it so that the rocket didn't fall into the ocean. That ended up not working.
It seems very whimsical.
Well, it made sense from an engineering standpoint, but it was a lot more difficult to snag the rocket than they ended up finding out. So, up until now, the only way to get a rocket back vertically was on a drone ship or landing straight up, and so this is a brand new thing, and it just creates more efficiencies in the launch system.
What is the direction now, as far as launch costs and the continued decline of launch costs if this will be the new landing procedure for Starship?
It's impossible to say that, of course. We can look to a Falcon 9 for an analog. SpaceX sales started out selling Falcon 9 for $60 million, it's upped that price to about $67 or $68 million — still the lowe
Episodes: Faster, Please! — The Podcast