Posts
Elon Musk
@elonmusk · Dec 30, 2019
The less code, the better! 1 point for adding a line of code, but 2 points for deleting a line. Bloatware is the devil.
Elon Musk
@elonmusk · Dec 30, 2019
Also, I hate deeply nested classes in C++. Had to be said.
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CleanTechnica
@cleantechnica · Dec 30, 2019
@elonmusk can you say how many million lines of code go into a Tesla Model 3?
Elon Musk
@elonmusk · Dec 30, 2019
The less code, the better! 1 point for adding a line of code, but 2 points for deleting a line. Bloatware is the devil.
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Everyday Astronaut
@Erdayastronaut · Dec 30, 2019
It’d be so cool if Tesla motors were powerful enough to spin start! Have you moved onto direct drive / electromechanical on the body flaps with motors yet or still spinning a pump for SN1?
Elon Musk
@elonmusk · Dec 30, 2019
Direct drive using several Tesla Plaid motors in parallel for SN1. Simpler, lighter & more fault tolerant. Rear flaps each need ~1.5 megawatts. It’s like moving the entire wing of an aircraft!
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Tesla in the Gong 🇦🇺🦘🤖🚕
@TeslaGong · Dec 30, 2019
A merch store for Australia please. Would love to buy Tesla merchandise. I have my eye on the jacket.
Elon Musk
@elonmusk · Dec 30, 2019
Tesla merch def needs some love, but too many fish to fry rn
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Tesla in the Gong 🇦🇺🦘🤖🚕
@TeslaGong · Dec 30, 2019
Pay Google wallet and Venmo would be great value added additions to make purchasing simplified.
Elon Musk
@elonmusk · Dec 30, 2019
Coming …
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ALEX
@ajtourville · Dec 30, 2019
Have you heard of solid-state ultrasonic welding?
Elon Musk
@elonmusk · Dec 30, 2019
Tesla uses that to wirebond cells to module current collectors. Is there a commercially available machine that can weld ~4mm full hard 301 stainless barrels & domes?
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K10✨
@Kristennetten · Dec 30, 2019
Texas, Florida, ... do you have the next starship sites picked out?
Elon Musk
@elonmusk · Dec 30, 2019
We’re focusing on Boca right now for Starship & Cape is focused on Falcon/Dragon
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Everyday Astronaut
@Erdayastronaut · Dec 30, 2019
Woah... I just realized... will there really be any COPVs on Starship once you move on from cold gas thrusters? Is there helium spin start for raptor or is it bootstrapped?
Elon Musk
@elonmusk · Dec 30, 2019
Spin start from COPVs so the ox & fuel turbines spool up super fast in unison. A precise start with full flow staged combustion is very important.
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Ginai
@SmileSimplify · Dec 30, 2019
Will SpaceX keep manufacturing Starship (and, presumably, Super Heavy too) out in the open, or do you foresee eventually moving production into (the industry norm) cleanrooms?
Elon Musk
@elonmusk · Dec 30, 2019
Moving to an enclosed (fairly) clean room environment for SN2 in Jan, although, unlike aluminum, stainless steel welding is not super sensitive. Our main issue here in Boca is that it can get very windy, which affects weld arc & steel melt pool.
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Everyday Astronaut
@Erdayastronaut · Dec 30, 2019
Speaking of autogenous, when will we see autogenous pressurization on Starship? I assume the first couple will still utilize helium COPVs like StarHopper?
Elon Musk
@elonmusk · Dec 30, 2019
No, will be autogenous from the start, tapping hot CH4 & O2 from Raptor
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Tesla Owners Silicon Valley
@teslaownersSV · Dec 30, 2019
Is the team going to be working through the night to complete?
Elon Musk
@elonmusk · Dec 30, 2019
Yeah
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Elon Musk
@elonmusk · Dec 30, 2019
Almost everything is different. These parts are stamped vs manually bump-formed & TIP TIG welded vs flux core. Higher precision, stronger joints & 20% mass reduction.
Elon Musk
@elonmusk · Dec 30, 2019
Best would probably be an autogenous laser weld, but we need more precise parts & fixtures. Hopefully get that done in 2020.
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Everyday Astronaut
@Erdayastronaut · Dec 30, 2019
Is there any substantial difference in welding / manufacturing techniques between these bulk heads and and MK-1 / MK-2? Also, LOL 😂
Elon Musk
@elonmusk · Dec 30, 2019
Almost everything is different. These parts are stamped vs manually bump-formed & TIP TIG welded vs flux core. Higher precision, stronger joints & 20% mass reduction.
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Scott Manley
@DJSnM · Dec 30, 2019
Really curious as to what you think of the explosive hydro forming process that was used for the Saturn V bulkheads.
Elon Musk
@elonmusk · Dec 30, 2019
We use that process for the Raptor nozzle jacket. The knuckles of this dome are stamped in Michigan with a 4000 ton car body press, which costs much less for same outcome.
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Elon Musk
@elonmusk · Dec 27, 2019
Was up all night with SpaceX team working on Starship tank dome production (most difficult part of primary structure). Dawn arrives …
Elon Musk
@elonmusk · Dec 30, 2019
Almost three now. Boca team is crushing it! Starship has giant dome 🤣🤣
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Conscious Observer
@spredlovnothate · Dec 30, 2019
This is not a joke: Elon Musk once rocketed a wheel of cheese into space The wheel of Le Brouere cheese that SpaceX launched inside a Dragon spacecraft on December 8, 2010
Elon Musk
@elonmusk · Dec 30, 2019
Haha true
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Elon Musk
@elonmusk · Dec 30, 2019
Replying to @flcnhvy
muffin or not-muffin
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Rick
@ConstructnNerd · Dec 30, 2019
When will we see a propellant based pod landing rather than parachute? Is there a reason parachute is better?
Elon Musk
@elonmusk · Dec 30, 2019
Crew Dragon is capable of propulsive landing, but would require extensive testing to prove safety. Better to focus on Starship.
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Elon Musk
@elonmusk · Dec 30, 2019
Crew Dragon should be physically ready & at the Cape in Feb, but completing all safety reviews will probably take a few more months
Elon Musk
@elonmusk · Dec 30, 2019
New technology development schedules tend to exhibit a version of Zeno’s Paradox — at any given point, you’re halfway there
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“Mary”
@kulpability · Dec 30, 2019
Is this likely in February?
Elon Musk
@elonmusk · Dec 30, 2019
Crew Dragon should be physically ready & at the Cape in Feb, but completing all safety reviews will probably take a few more months
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