Reusable Rockets Quotes

SpaceX has been testing reusable rockets that can carry payloads to space and land back on Earth, on their launchpads, with precision.

If humanity is to become multi-planetary, the fundamental breakthrough that needs to occur in rocketry is a rapidly and completely reusable rocket … achieving it would be on a par with what the Wright brothers did. It’s the fundamental thing that’s necessary for humanity to become a space-faring civilization. America would never have been colonized if ships weren’t reusable.

The prospect of reusable rockets dramatically lowering the cost of launch fueled the growth, as did the revolution in small satellites. For decades, satellites had been big, as large as a garbage truck, and expensive, costing hundreds of millions of dollars. But now the technology had changed, and like an iPhone, they had shrunk in size, to the size of a shoebox, costing far less. Musk wasn’t the only entrepreneur

The way rockets work right now is they are all expendable. So, you fly them once, and you throw it away. You can imagine if any mode of transport was expendable, it wouldn’t be used very much. But whether it’s a plane, a boat, a car, a bicycle, or a horse—they’re all reusable. If a 747 costs about a quarter-billion dollars and you need two for a round-trip, nobody is paying half a billion dollars from London to New York and back.

He decided to start with a smaller rocket that would not be too costly. “We’re going to be doing dumb things, but let’s just not do dumb things on a large scale,” he told Cantrell. Instead of launching large payloads, as Lockheed and Boeing did, Musk would create a less expensive rocket for the smaller satellites that were being made possible by advances in microprocessors. He focused on one key metric: what it cost to get each pound of payload into orbit. That goal of maximizing boost for the buck would guide his obsession with increasing the thrust of the engines, reducing the mass of the rockets, and making them reusable.

We fight for mass especially with a reusable upper stage, which nobody has ever succeeded in,” he said. “Just FYI. It’s not like other rocket scientists were huge idiots who wanted to throw their rockets away all the time. It’s fucking hard to make something like this. One of the hardest engineering problems known to man is making a reusable orbital rocket. Nobody has succeeded. For a good reason. Our gravity is a bit heavy. On Mars this would be no problem. Moon, piece of cake. On Earth, fucking hard. Just barely possible. It’s stupidly difficult to have a fully reusable orbital system. It would be one of the biggest breakthroughs in the history of humanity. That’s why it’s hard. Why does this hurt my brain? It’s because of that. Really, we’re just a bunch of monkeys. How did we even get this far? It beats me. We were swinging through the trees, eating bananas not long ago.

The magic lies in understanding which constraints are mutable. SpaceX accepted that a rocket falling back to Earth needed to be slowed down, but it chose to use the built-in rocket engine instead of a wing to do it. Precisely because the SpaceX engineers were able to relax one set of now mutable constraints, they were able to see new possibilities and to develop the Falcon’s reusable rockets.

One of the most notable innovations of SpaceX is the creation and engineering of reusable rockets. Prior to this innovation, once a rocket was used, it was done with, resulting in significant financial loss.

The design for the Space Shuttle called for the creation of reusable solid rocket boosters, massive cone-tipped cylinders that would lift the Shuttle to 150,000 feet before falling away and floating to the ground on parachutes for recovery and reuse. This worked surprisingly well. The boosters were built in Brigham County, Utah, and shipped to Florida for takeoff. After each use, they’d be recovered from the open ocean, freighted to port, refurbished and, once again, shipped to Florida. The boosters were about 150 feet long, but they were precisely 12.17 feet in diameter—because they had to fit on a special railway flatcar for those overland shipments. The aerospace engineers who sat down to design those solid rocket boosters had a lot of parameters to juggle—the pull of gravity, the efficiency of rocket fuel, the weight of the payload. But mixed in with those parameters, immutable and inarguable was the width of a railcar, which was foreordained by the width of the Roman chariot wheelbase, which was, in turn, determined by the metalbeating know-how of Roman blacksmiths. Infrastructure casts a long shadow.

While there, I was somewhat surprised to learn that our next foray into space would include an orbiter with wings and with wheels that could land on a runway, as well as a booster, also with wings and wheels to land on a runway. The program had generated great interest. At the meeting, at least seven aerospace manufacturers touted their rockets and boosters on which they were already working. They had models built in 1970 regarding the seven configurations and stages of the program to follow Apollo. Today, we would be delighted to have a fully reusable orbiter to take the crew only, a booster to get them there, and then a return to Earth for both of them. We’d love to have that. Why don’t we have that? Because of a grave design flaw. When I studied the models, I observed that the boosters in the models had windows. That was a surprise to me. After all, why would you want windows in a booster with nobody in it? I was informed that a crew of two astronauts would travel inside the booster to the space station, and then return in the booster to land back on Earth. I worried about the crew in the booster during launch and said so. I thought it was unwise because of the expense, but even more so because of the danger to the astronauts.

Just FYI. It’s not like other rocket scientists were huge idiots who wanted to throw their rockets away all the time. It’s fucking hard to make something like this. One of the hardest engineering problems known to man is making a reusable orbital rocket. Nobody has succeeded. For a good reason. Our gravity is a bit heavy. On Mars this would be no problem. Moon, piece of cake. On Earth, fucking hard. Just barely possible. It’s stupidly difficult to have a fully reusable orbital system. It would be one of the biggest breakthroughs in the history of humanity. That’s why it’s hard. Why does this hurt my brain? It’s because of that. Really, we’re just a bunch of monkeys. How did we even get this far? It beats me. We were swinging through the trees, eating bananas not long ago.