2019-02-01

Just bought https://t.co/LJJCD7BAgX oh yeah

@ukrpravda_news Whoa cool

@vincent13031925 @Tesla No plans to do so. Would recommend Model S.

@Trump_45th @SpaceX 7

@royalsociety @GreshamCollege ♥️ logarithms

@Archin50001 @AlexTheChemist @SpaceX Dammit! 😀

@122ddd2223d @Dash71209069 @yungmruglygod @nickynaptime We’ll tweak the alloy over time, so it won’t exactly be 301, but close

@AlexTheChemist @SpaceX Well, my past mistakes do seem extremely dumb, especially the ones where I mistakenly thought I was smart

@nickynaptime Rocket mass ratio is about the same for aluminum-lithium vs 301 stainless full hard at cryo, but latter costs way less, is tougher & doesn’t even need paint!

@SpaceXFan97 @wonderofscience @Treebeard1671 @Erdayastronaut @keego73 Still up to 31. Will probably fly with fewer initially in case it blows up.

@wonderofscience @Treebeard1671 @Erdayastronaut @keego73 Mostly true

@Erdayastronaut @keego73 Cold gas thrusters only. Will use body flaps & main engines for landing orientation, so won’t need high thrust reaction control. Simplifies things considerably.

@TriTexan @SpaceX Yes

Initially making one 200 metric ton thrust engine common across ship & booster to reach the moon as fast as possible. Next versions will split to vacuum-optimized (380+ sec Isp) & sea-level thrust optimized (~250 ton).

Preparing to fire the Starship Raptor engine at @SpaceX Texas https://t.co/8JCOi1BG6z

@Treebeard1671 @Erdayastronaut @keego73 Yes. It’s very rare to find all three.

@Erdayastronaut @keego73 To be clear, I’m confident that a stainless steel ship will be lighter than advanced aluminum or carbon fiber, because of strength to weight vs temperature & reduced need for heat shielding

@Erdayastronaut @keego73 Will probably make booster legs/flaps same as ship, instead of like F9

@Erdayastronaut @keego73 Yes, ship needs pitch/roll/yaw control across wide Mach regime & angle of attack