Posts
Elon Musk
@elonmusk · Dec 23, 2018
SpaceX metallurgy team developed SX500 superalloy for 12000 psi, hot oxygen-rich gas. It was hard. Almost any metal turns into a flare in those conditions.
Elon Musk
@elonmusk · Dec 23, 2018
Our superalloy foundry is now almost fully operational. This allows rapid iteration on Raptor.
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Robotbeat🗽 ➐
@Robotbeat · Dec 23, 2018
That is one of the exceptions. Only now is the US starting to approach Soviet oxygen rich staged combustion technology and metallurgy. Also, Falcon 9 is the most operated rocket, now, not Atlas. The better probes is not mere funding. Vastly superior electronics tech.
Elon Musk
@elonmusk · Dec 23, 2018
SpaceX metallurgy team developed SX500 superalloy for 12000 psi, hot oxygen-rich gas. It was hard. Almost any metal turns into a flare in those conditions.
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Elon Musk
@elonmusk · Dec 23, 2018
Replying to @BENBALLER
Thanks!
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
That is mad level. But can we all agree that the RD-170 has been a little too comfortable at #1 for too long at 265 bar 😉 here’s hoping for 300 🤞
Elon Musk
@elonmusk · Dec 22, 2018
It’s embarrassing that Boeing/Lockheed need to use a Russian engine on Atlas, but that engine design is brilliant
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
Please say electric turbo pumps. Please say electric turbo pumps 🤞🤞🤞🤞
Elon Musk
@elonmusk · Dec 22, 2018
You def don’t want electric pumps on a rocket engine! Raptor turbopumps alone need 100,000 horsepower per engine. That’s not a typo.
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
Still full flow closed cycle? Don’t tell me you’re going beyond 300 bar 😳🤯
Elon Musk
@elonmusk · Dec 22, 2018
Yes, full flow, gas-gas, staged combustion. Will take us time to work up to 300 bar. That is a mad level.
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NSF - NASASpaceflight.com
@NASASpaceflight · Dec 22, 2018
While we have you, Elon.... How well is Raptor performing during test stand firings at McGregor? On track to support your Super Heavy/Starship schedule?
Elon Musk
@elonmusk · Dec 22, 2018
Yes. Radically redesigned Raptor ready to fire next month.
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
Like I always say folks. SSTOs suck, as heavily touched on in this video. Not to mention going up SSTO is one thing, reusing is another!!! - “Why Single Stage to Orbit rockets SUCK. The wacky history and future maybes of SSTOs” youtu.be/Sfc2Jg1gkKA
Elon Musk
@elonmusk · Dec 22, 2018
Seriously! We are just on the wrong planet for SSTO. Mars, no problem.
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Tom Syndercombe
@_Synders · Dec 22, 2018
Launching Starlink from Starship?
Elon Musk
@elonmusk · Dec 22, 2018
Starlink V1 on Falcon, V2+ on Starship. Basically, all future products will contain either the word “star” or “link” 😀
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Luca Garbarini
@ludan27 · Dec 22, 2018
Will this new structure hold the SSTO ability ? 🤔
Elon Musk
@elonmusk · Dec 22, 2018
Yes, but single stage to orbit with no payload is pointless. Add Super Heavy rocket booster & orbital payload is gigantic. Only need booster on Earth, due to deep gravity well & thick atmosphere. Starship alone on moons & Mars.
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Just A. Tinker
@John_Gardi · Dec 22, 2018
Cast ribbing?
Elon Musk
@elonmusk · Dec 22, 2018
Coldformed at cryo
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Elon Musk
@elonmusk · Dec 22, 2018
Replying to @Mollyonm4rs
This test hopper is at full body diameter of 9m / 30 ft, just not full height. Super Heavy will be full height & diameter.
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Elon Musk
@elonmusk · Dec 22, 2018
Replying to @TheMuddySchmuck
We’re building subsections of the Starship Mk I orbital design there
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Alex Martin
@SidewalkSciGuy · Dec 22, 2018
Like SpaceX's grasshopper program prior to F9 landing attempts. Starship will undergo similar launch/landing phase
Elon Musk
@elonmusk · Dec 22, 2018
Exactly
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Dreams of Mars 🕊❤️🚀🌕
@MemesOfMars · Dec 22, 2018
Who makes that Alloy? SpaceX or supplier?
Elon Musk
@elonmusk · Dec 22, 2018
For sheet/plate, at supplier made to our spec. For cast, in our Hawthorne foundry.
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John Kraus
@johnkrausphotos · Dec 22, 2018
Wait... March/April 2019!? This is much sooner than expected, yes!?
Elon Musk
@elonmusk · Dec 22, 2018
Yes
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Elon Musk
@elonmusk · Dec 22, 2018
Yup. Actually, the only significant design element in common with early Atlas is stainless steel & we’re using a different alloy mix. I super ♥️ 300 Series Stainless!
Elon Musk
@elonmusk · Dec 22, 2018
I will do a full technical presentation of Starship after the test vehicle we’re building in Texas flies, so hopefully March/April
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
Here’s a direct video for those too lazy to click. This is why the “Unlike Atlas, Starship is bucking stabile even when unpressurized” is a key element 👍
Elon Musk
@elonmusk · Dec 22, 2018
Yup. Actually, the only significant design element in common with early Atlas is stainless steel & we’re using a different alloy mix. I super ♥️ 300 Series Stainless!
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Elon Musk
@elonmusk · Dec 22, 2018
Stainless steel is correct, but different mixture of alloys & new architecture. Unlike Atlas, Starship is buckling stable on launchpad even when unpressurized.
Elon Musk
@elonmusk · Dec 22, 2018
While there are some material similarities, Starship is very different from the Atlas design
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Everyday Astronaut
@Erdayastronaut · Dec 22, 2018
Stainless steel balloon tanks. Heavy metal. Calling it now. Welcome Atlas back Atlas B.
Elon Musk
@elonmusk · Dec 22, 2018
Stainless steel is correct, but different mixture of alloys & new architecture. Unlike Atlas, Starship is buckling stable on launchpad even when unpressurized.
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