Friday , December 3 2021

Launch of SpaceX on Sunday, will mark a new advance in reusing rockets – Spaceflight Now


The Spaceflight SSO-A rideshare set to launch its mission flew twice previously – from the pad 39A at the Kennedy Space Center on May 11 and from the pad 40 at the Cape Canaveral Air Force Police Station on August 7 & # 39; 39; t. Credit: SpaceX

SpaceX teams from Vandenberg Air Force Base in California are preparing to launch a Falcon 9 rocket into orbit on Sunday. In the third position re-used the first stage booster, engineers fly the same rocket on a first consecutive days to continue a long-term goal.

This big target is still a while away – SpaceX CEO Elon Musk says a 24-hour rocket turnover in 2019 could happen, but the company is continuing its efforts to slow down the time between flights in the same first stage.

Hans Koenigsmann, the executive vice president of production and flight reliability at SpaceX, said the Falcon 9 rockets will begin flying more flights in October, stepping up to take a big step forward with the mission from Vandenberg on Sunday. A military base about 140 miles (225 kilometers) north west of Los Angeles.

N To date, we have just blown a booster twice,. Said Koenigsmann, speaking on October 3 at the International Space Congress in Bremen, Germany. Vb If we start soon, we'll start to fly a booster three times, and then four times, five times, and so on. It is clear that we are very careful in evaluating the reinforcing reinforcements after more than one flight. We want to make sure we don't see any wear and tear at the wrong points. "

SpaceX is now the latest version of the Falcon 9 and will be released on May 5 in Kennedy Space Center in Florida with a launch from Pad 39A on May 11th. 1 – Bangladesh orbit in Bangladesh – orbit in Bangladesh – this mission, which landed on the unmanned aerial vehicle in the Atlantic Ocean, returned to Florida for inspections and renovations, and then again on a flight from the padden (40) to August 7; I flew. Indonesia Merah Putih is the neighboring Cape Canaveral Air Force Station with communication spacecraft.

After another landing on the drone ship in the Atlantic, the rocket turned to shore and SpaceX was now crossed into California by preparing for the third flight set for Sunday.

The removal of the Falcon 9 rocket was scheduled at the opening of the approximately half-hour launch, from the Space Launch Complex 4-East at Vandenberg to 10:31:47 PM PST (1:31:47 pm EST; 1831: 47 GMT). Sixty-four small numbers, from a Rubik's cube to a refrigerator, on top of the rocket from 17 countries, the US Department of Defense, the commercial world imaging company Planet, international space agencies, universities and art museums.

Spaceflight, a Seattle-based company that set up launch services for small satellites, reserved the full capacity of the Falcon 9 mission in 2015, then signed a contract with the smallmate owners to ride a 355-mile-high (575-kilometer) sun. -synchronous polar orbit.

For the third time, SpaceX plans to re-plan the first stage for a potential fourth future launch on a drone ship from the beach in Vandenberg to the Pacific Ocean.

In October, Koenigsmann announced in October that although the new Block 5 version of the Falcon 9 rocket made changes to make it easier for the first stage to recover and reuse, the re-launch of the boosters is still a learning process for SpaceX.

”One of the problems is fatigue,“ he said. Iniz You must monitor the life cycle of the components. They vibrate, basically, you have to have an eye on the fracture control and make sure that there is no breakage on these components. That's not really new. The helicopters are doing it now. They are basically vibration machines and they actually monitor the number of cycles and know exactly when to perform maintenance or preventive maintenance.

Ğ Something similar here is what we can do in the rocket, Ko Koenigsmann said. Ğ We can save the flight load as a basis and then save it in the history of the part, and if it really needs to be exchanged, we can understand when the section needs to be replaced. Ideally, you don't want to change parts. "

After each launch, when Block 5 asked how well the boosters remained, Koenigsmann said, sonra Actually, I was surprised. Of course, the engines have a fairly hot exhaust gas at the beginning, so it should be good to put the engines in (re-entry) flow. There are details. I say we take damage and make adjustments. That's one reason we have these blocks. Basically, we're making changes to improve the tool. At this point, I'm actually quite happy. "

A Falcon 9 rocket landed on the drone ship, SpaceX's pontoon ship, which watches the latest launch of Florida from the Kennedy Space Center on November 15th. Credit: SpaceX

In the missions launched towards the orbit of the Jeostater, more than 22,000 miles (approximately 36,000 kilometers) of a perch on the Earth can reach speeds above 5,000 mph, exposing the first phase to warmer re-entry conditions on the way back to Earth. For loads loaded for the low Earth orbit, there is no need to advance quickly in the first stage, up to a few hundred miles.

Çalış There are some of the warmer re-entrances, there's something we're working on to perfect and make sure, Ko said Koenigsmann. Mak At the end, take the rocket and start the goal and start again. Basically we have the goal of launching in two days and if we do that it would be tremendous. "

Ur The majority of the work is motor, “he said. “We are renewing the engine. Most of them are actually parts that are not suitable for the next flight, so we change the parts. This is not a real damage. A preventive maintenance type, we know this part may fail next time, so we don't take the risk and change it. We're getting some damage from the heat shield and the things that hit the aero cover. That's quite a lot. It's not really that bad. "

”The Aero cover is basically the channel path next door,“ he said. Ve We're looking at tanks to make sure there's no surprise in the tank, and so far we've only found clean tanks inside. Sometimes we are damaged by the thermal protection system that affects the aero covers, so they are reinforced to make sure we don't break anything on the descents. "

Ok In terms of renovating and building a new rocket, the cost of renewal is cheaper, Ko says Koenigsmann.

"It didn't happen overnight," Koenigsmann said of his re-usability effort. ”For many years we've been working on this and we put a lot of money in it and it was our own money that we put there.“

SpaceX not only benefited from the wealth of Musk, but also from venture capital investments and cash infusion of Google. The company's revenue-generating launch activity also earned money from US customers, as well as US Air Force, a billions of dollars in contracts with NASA and SpaceX.

SpaceX provided customers who wanted to place their ads on a re-used rocket or discounted a $ 62 million sales price, which was proven by SpaceX. In May, Musk said that SpaceX spent about $ 50 million on flights in a previously flowing business, and that the company expects cad a steady decline in prices et when it gains experience in re-launching rockets and what the SpaceX says is Mus Musk Mus. he said he had given up. A billion-dollar investment that is capable of rescuing and rescuing boosters.

In May, Musk said that SpaceX's first step could be to increase the cost of the Falcon 9 launches by approximately $ 5 million, or $ 6 million per plane, assuming that it could quickly re-use the second stage of boosters, load-load shrouds and ultimately Falcon 9. However, after considering the updates to upgrade the second stage of Falcon 9 for re-entry – it was faster than the first stage and needed to withstand higher entry temperatures – Musk tweeted on November 16: aş SpaceX is now on Falcon 9 için not planning to upgrade. The second stage for re-usability. "

In May, he announced that about 60 percent of the marginal cost of the Falcon 9 launch came from the first stage, from 20 percent in the second stage to 10 percent at the freight fair – protecting satellites from air flow during the satellites. about 10 percent of the processing, testing and assembly of a rocket for flight and an aerodynamic cover.

SpaceX successfully won 31 times after rockets, 31 times after launching the orbit – since December 2015 – 15 times the winners back from the edge of the field and at about 2.3 mph (about 2.3 kilometers per second) per second. The company has used rocket 17 times since March 2017.

Thirty-six missions have been launched by SpaceX since the company restarted its flights in January 2017 as a result of the explosion of the Falcon 9 rocket in the previous September. The company's record has been perfect since its flight nearly two years ago, and after two failures in 2015 and 2016 – one in flight and one in – resulted in the destruction of a space station supply ship and an Israeli communications satellite.

Sunday's mission will mark the 64th flight of the Falcon 9 rocket since the launch of the first edition of SpaceX's workgroup in June 2010. If the SSO-A mission goes well, SpaceX aims to follow it with the launch of a new Falcon 9 rocket. On Tuesday with another cargo plane from Cape Canaveral to the space station.

Ek In addition to the economy of reusability, there is an additional benefit or side effect, Ko said Koenigsmann. Siniz And this, basically, you look at the booster after the flight, and you can find things you can't see otherwise. You can see where the material leaked or where the heat came from or something like that. You can find loose joints that are tight before you need more protection. This kind of thing is incredibly valuable for actually making a more reliable rocket. You can really control that.

. If you don't know what's going on, you can put a GoPro on the ground and watch it during launch. That's what we're doing, pulling it out and watching, okay, that looks good, or we understand it's something that needs strengthening. Telemetry is typically limited to bandwidth. We only record telemetry locally, no matter what, we take all high-speed data basically from a solid state in the vehicle, and we use it to look at all the loads that the vehicle sees. It is important for us and we are trying to develop the tool based on these data.

”So it's not just the economic part,“ he said. Var Actually, I'm interested. The benefits of reliability and reliability in my business are largely reusability. "

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Follow Stephen Clark on Twitter: @ StephenClark1.

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