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Scott Manley
@DJSnM · 21. Feb. 2019
I remember hearing about problem with Pinter injectors naturally creating a region in combustion chamber which ablated much faster.
Elon Musk
@elonmusk · 21. Feb. 2019
Pinter injector tends to have hot & cold streaks. Hot streaks burn a rut at the throat that accelerates erosion.
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Elon Musk
@elonmusk · 21. Feb. 2019
Antwort an @benoitdenayer
Essentially, yes. Great engineering talent, but should focus on reusable rockets for purpose of a permanent human base on the moon and self-sustaining city on Mars.
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Not Sure
@DrRichardPitre · 21. Feb. 2019
Elon: Many small investors want to be a part of this historic event. Find a way that doesn't compromise your control. We'll gladly share the risk. Thanks.
Elon Musk
@elonmusk · 21. Feb. 2019
We are constrained by the accredited investor rule, but will think about how this could be done
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Everyday Astronaut
@Erdayastronaut · 21. Feb. 2019
Wasn't Merlin 1A ablatively cooled? I believe Tom Mueller's got one hanging out in his house 😂 The Merlin of 15 years ago is NOTHING like the Merlin today. You guys pulled every single drop of power out of that thing! 🙌
Elon Musk
@elonmusk · 21. Feb. 2019
Yeah, that was a bit embarrassing ☺️High engine chamber pressure and ablative don’t get along. Ok for low pressure, expendable upper stage.
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sasor098
@sasor098 · 21. Feb. 2019
Then just upgrade it as they go, the merlin wasn't that good to start out and now it fights with the best of them
Elon Musk
@elonmusk · 21. Feb. 2019
That’s true 😀 Merlin 1A was terrible. 1C was ok, 1D good, but block 5 Merlin (should probably be called 1E) is something special. Took about 15 years to get there.
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Everyday Astronaut
@Erdayastronaut · 21. Feb. 2019
Not really, no. For instance, ULA had a $100 million per year in “readiness” for defense stuff. SpaceX never got that
Elon Musk
@elonmusk · 21. Feb. 2019
Actually, they received (and still receive) almost a billion dollars a year for “launch capability”. Even if they do zero launches, US govt still gives them that.
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Elon Musk
@elonmusk · 21. Feb. 2019
Antwort an @Geopilot
Don’t know
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Elon Musk
@elonmusk · 21. Feb. 2019
I have been chief engineer/designer at SpaceX from day 1. Had I been better, our first 3 launches might have succeeded, but I learned from those mistakes. arstechnica.com/science/2018/0…
Elon Musk
@elonmusk · 21. Feb. 2019
SpaceX commercial 🚀 launch market share went from 0% in 2010 to 65% in 2018. Despite massive subsidies to Boeing/Lockeed, they have never won a fair competition against SpaceX for several years.
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Dreams of Mars 🕊❤️🚀🌕
@MemesOfMars · 21. Feb. 2019
You've come a long way since the Falcon 1!
Elon Musk
@elonmusk · 21. Feb. 2019
Exactly. That’s the critical point for Starship/BFR: more payload than the biggest rocket ever made, but for less money per launch than the smallest (orbital) rocket. Without something that lowers orbital flight cost by 100X, humanity will never be a multiplanet species.
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RaceFan22
@fan_of_racing · 21. Feb. 2019
To be fair, most engines that NASA uses are much better than the Merlin engine. Merlins are based off of engine designs from the '50s.
Raptor on the other hand is one of the most advanced rocket engines ever developed.
Elon Musk
@elonmusk · 21. Feb. 2019
SpaceX Merlin architecture is simpler than staged combustion (eg SSME or RD), but it has world record for thrust/weight & thrust/cost engine. Raptor has better Isp, but I’m worried it may fall short on those two critical metrics.
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Elon Musk
@elonmusk · 21. Feb. 2019
Antwort an @wonderofscience
So true 🤡 John Clarke 👌
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Elon Musk
@elonmusk · 21. Feb. 2019
Antwort an @macodiseas
Not true. Limiting factor in any staged combustion rocket engine, liquid/gas or gas/gas, is pressure & temperature in oxygen preburner
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Mønterey
@moenterey · 21. Feb. 2019
And on your Satoshi BTC address you hold the rest.
Elon Musk
@elonmusk · 21. Feb. 2019
Whoever owns the early BTC deserves a Nobel prize in delayed gratification
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CoinDesk
@CoinDesk · 20. Feb. 2019
Elon Musk, CEO of Tesla, has officially gone public with his belief cryptocurrency offers an improved alternative to conventional money. ow.ly/9nRZ30nLmYa
Elon Musk
@elonmusk · 21. Feb. 2019
That said, I still only own 0.25 BTC, which a friend sent me several years ago. Don’t have any crypto holdings.
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Katya Pavlushchenko
@katlinegrey · 21. Feb. 2019
#Rogozin doesn't believe that @elonmusk will create an engine better than #RD180. According to Rogozin, Musk "is not a technical specialist in this matter" and "does not understand what this is about": interfax.ru/russia/651354
Elon Musk
@elonmusk · 21. Feb. 2019
I have been chief engineer/designer at SpaceX from day 1. Had I been better, our first 3 launches might have succeeded, but I learned from those mistakes.
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Elon Musk
@elonmusk · 20. Feb. 2019
Tesla made 0 cars in 2011, but will make around 500k in 2019
Elon Musk
@elonmusk · 20. Feb. 2019
Meant to say annualized production rate at end of 2019 probably around 500k, ie 10k cars/week. Deliveries for year still estimated to be about 400k.
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Kristen Henry
@kristendlt · 20. Feb. 2019
Do they load themselves @elonmusk
Elon Musk@elonmusk· 20. Feb. 20194000 Tesla cars loading in SF for Europe
Elon Musk
@elonmusk · 20. Feb. 2019
Won’t be long before they do
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Elon Musk
@elonmusk · 20. Feb. 2019
4000 Tesla cars loading in SF for Europe
Elon Musk
@elonmusk · 20. Feb. 2019
Tesla made 0 cars in 2011, but will make around 500k in 2019
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Elon Musk
@elonmusk · 20. Feb. 2019
4000 Tesla cars loading in SF for Europe
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The Onion
@TheOnion · 19. Feb. 2019
Narrow Line Of Dirt Not Being Swept Into Dustpan Without A Fight trib.al/WmGyJlU
Elon Musk
@elonmusk · 19. Feb. 2019
The gritty truth …
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