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Re: SpaceX Is Now Building a Raptor Engine a Day, NASA Says (Moon 1st; Mars 2029)

By: Decomposed in 6TH POPE | Recommend this post (0)
Thu, 03 Nov 22 7:55 AM | 36 view(s)
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Msg. 37014 of 60008
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fizzy:

Re: “The SpaceX CEO tweeted that he predicts humans will touch down on the Mars in 2029.”
I'd like to know the reason for choosing Mars. It's kind of cold (as low as -220°), and the soil is thought to be toxic - both to people and plants.

While the asteroid belt holds more appeal to me, it may be that the soil on Mars is easier to tunnel through. Warm it up to room temperature and it's relatively soft. Try that with an asteroid and, aside from what boils off, all you've got is a chunk of rock.

Both Mars and the asteroid belt present low gravity issues to humans. On Mars, a 150 lb man would weigh 52.5 lbs. In the asteroid belt, of course, he'd weigh nothing - but I'm not sure 35% gravity would be much better, healthwise. I'd expect expect artificial gravity to be produced by spinning an asteroid and that may wind up being BETTER than 35%.








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The above is a reply to the following message:
SpaceX Is Now Building a Raptor Engine a Day, NASA Says (Moon 1st; Mars 2029)
By: Fiz
in 6TH POPE
Thu, 03 Nov 22 5:53 AM
Msg. 37011 of 60008

I still don't understand how Musk can do all that he is doing. Sure he comes across as flim-flam and takes advantage of government subsidies and loopholes like nobody's business. And often he is delayed. But he DELIVERS. Sometimes I wonder if he is actually a space alien!? ;->

http://science.slashdot.org/story/22/11/02/2051222/spacex-is-now-building-a-raptor-engine-a-day-nasa-says

SpaceX Is Now Building a Raptor Engine a Day, NASA Says (arstechnica.com) 2
Posted by BeauHD on Wednesday November 02, 2022 @11:30PM from the progress-update dept.
An anonymous reader quotes a report from Ars Technica:
A senior NASA official said this week that SpaceX has done "very well" in working toward the development of a vehicle to land humans on the surface of the Moon, taking steps to address two of the space agency's biggest concerns. NASA selected SpaceX and Starship for its Human Landing System in April 2021. In some ways, this was the riskiest choice of NASA's options because Starship is a very large and technically advanced vehicle. However, because of the company's self-investment of billions of dollars into the project, SpaceX submitted the lowest bid, and from its previous work with SpaceX, NASA had confidence that the company would ultimately deliver.

Two of NASA's biggest technological development concerns were the new Raptor rocket engine and the transfer and storage of liquid oxygen and methane propellant in orbit, said Mark Kirasich, NASA's deputy associate administrator who oversees the development of Artemis missions to the Moon. During a subcommittee meeting of NASA's Advisory Council on Monday, however, Kirasich said SpaceX has made substantial progress in both areas. The Raptor rocket engine is crucial to Starship's success. Thirty-three of these Raptor 2 engines power the Super Heavy booster that serves as the vehicle's first stage, and six more are used by the Starship upper stage. For a successful lunar mission, these engines will need to re-light successfully on the surface of the Moon to carry astronauts back to orbit inside Starship. If the engines fail, the astronauts will probably die.

"SpaceX has moved very quickly on development," Kirasich said about Raptor. "We've seen them manufacture what was called Raptor 1.0. They have since upgraded to Raptor 2.0 that first of all increases performance and thrust and secondly reduces the amount of parts, reducing the amount of time to manufacture and test. They build these things very fast. Their goal was seven engines a week, and they hit that about a quarter ago. So they are now building seven engines a week."
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http://www.the-sun.com/tech/4915972/elon-musk-mars-humans-manned-mission-date/

Mar 17 2022 (Updated timeline is now 2029)

ELON Musk expects to see another giant leap for mankind not just in this lifetime, but in this decade.

The SpaceX CEO tweeted that he predicts humans will touch down on the Mars in 2029.
The potential of the Starship is behind SpaceX's $100billion dollar valuation

The SpaceX Starship, a 400 foot reusable rocket equipped with one of the most powerful engines ever built will be the vessel that brings humans to the red planet.

Since 2020, iterations of the Starship have completed four test launches and landings, reaching heights of over 10 kilometers on each trip.

Plans to take a crewed mission on a trip around the Moon in the Starship are slated for 2023.


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