Posts
Everyday Astronaut
@Erdayastronaut · Feb 8, 2019
Since you talked about maybe incorporating the fins / landing legs like the Starship has on the booster, can we expect the booster to belly flop and bleed off velocity through atmosphere more effectively like Starship? Or will it come back engines first like F9?
Elon Musk
@elonmusk · Feb 8, 2019
Booster center of mass is much lower & more consistent (no payload mass to consider), so still biases towards engine first entry
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Elon Musk
@elonmusk · Feb 8, 2019
Rocket booster temperatures won’t go much above 600 Kelvin on hottest parts of main body & maybe around 1200K on base, which uncooled steel can handle. Starship is around 1700K for a Mach 25 entry, so needs shielding of some kind.
Elon Musk
@elonmusk · Feb 8, 2019
Technically, the steel is radiatively cooled (not uncooled). T^4 is one of the most interesting things about reality!
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Сергей Литовченко
@LytovchenkoSerg · Feb 8, 2019
If methane vapors are brought into the cavity between the inner outer skins and are discharged through the holes to meet the incident flow, a surface layer is created. The flow will interact with the layer, not with the skin. Protection of the Starship hopper guaranteed
Elon Musk
@elonmusk · Feb 8, 2019
Rocket booster temperatures won’t go much above 600 Kelvin on hottest parts of main body & maybe around 1200K on base, which uncooled steel can handle. Starship is around 1700K for a Mach 25 entry, so needs shielding of some kind.
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Elon Musk
@elonmusk · Feb 7, 2019
Replying to @Mollyonm4rs
Prob wise for version 1 to have legs or we will frag a lot of launch pads
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Everyday Astronaut
@Erdayastronaut · Feb 7, 2019
How will the booster support its own (and Starship's) weight when it's unfueled? It won't have a chest-plate of sweaty 310S like the Starship will, right? Will it need some kind of back bone or internal structure to remain structurally stable when unpressurized?
Elon Musk
@elonmusk · Feb 7, 2019
Welded, internal, longitudinal hat stringers. To the degree it may need hoop stiffness (prob not), combine with slosh baffles.
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Everyday Astronaut
@Erdayastronaut · Feb 7, 2019
Can you clear up the new naming scheme? Is Starship the whole system (and the upper stage) and the booster is super heavy? Is all up called Starship / Super Heavy? Is it Starship & Super Heavy and the whole thing is still called BFR??? 🤯
Elon Musk
@elonmusk · Feb 7, 2019
The Super Heavy booster is only needed on Earth, so think of this as just “Starship” & sometimes it needs a boost, hence Super Heavy
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Elon Musk
@elonmusk · Feb 7, 2019
Design requires at least 170 metric tons of force. Engine reached 172 mT & 257 bar chamber pressure with warm propellant, which means 10% to 20% more with deep cryo.
Elon Musk
@elonmusk · Feb 7, 2019
🔥🖤 SpaceX Engineering 🖤🔥
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Octagon
@OctagonROA · Feb 7, 2019
Probably a really dumb question, but if the test of the rocket produces that much thrust how is it held in place during testing?
Elon Musk
@elonmusk · Feb 7, 2019
Telekinesis
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Andre Infante
@AndreTI · Feb 7, 2019
Did you folks track down the source of the green hue?
Elon Musk
@elonmusk · Feb 7, 2019
Vaporized some copper
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Tesla Owners Silicon Valley
@teslaownersSV · Feb 7, 2019
Any update on sentry mode? Brother in law has his window broken into twice in the past two months.
Elon Musk
@elonmusk · Feb 7, 2019
Sentry Mode (and Dog Mode) roll out next week
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Elon Musk
@elonmusk · Feb 7, 2019
Raptor just achieved power level needed for Starship & Super Heavy
Elon Musk
@elonmusk · Feb 7, 2019
Design requires at least 170 metric tons of force. Engine reached 172 mT & 257 bar chamber pressure with warm propellant, which means 10% to 20% more with deep cryo.
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Elon Musk
@elonmusk · Feb 7, 2019
Raptor just achieved power level needed for Starship & Super Heavy
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michael strik
@StrikMichael · Feb 6, 2019
@elonmusk Ordered 2
model 3 Performance Editions. Set 3 times a new pick up date and final should be 16-02-2019. Today they called again if we please could pick uo the Cars in Tilburg Tesla factory. In a rush we arranged all, drove 2,5 hours for the 18PM timeslot.
Elon Musk
@elonmusk · Feb 6, 2019
Sorry, many unexpected challenges with cars coming through Zeebrugge first time. Cars will start moving out in volume tomorrow.
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SpaceX
@SpaceX · Feb 6, 2019
One year ago today youtube.com/watch?v=A0FZIw…
Elon Musk
@elonmusk · Feb 6, 2019
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Rob Stumpf
@RobDrivesCars · Feb 6, 2019
Here's to the $35k base price without credits.
Eventually 🤙🏻
Elon Musk
@elonmusk · Feb 6, 2019
We’re doing everything we can to get there. It’s a super hard grind.
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Elon Musk
@elonmusk · Feb 6, 2019
Replying to @nahuelcuellas
Exactly. Both prices are shown right next to each other & lower price is *actually* the real apples to apples cost vs a fuel car. In fact, for many states in the US, it’s way better.
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Dude 🧠
@Gargant44992081 · Feb 6, 2019
Europe gets a lower price too?
Elon Musk
@elonmusk · Feb 6, 2019
VAT of ~20% & import duties of ~10% usually result in a 30% higher cost in Europe
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Elon Musk
@elonmusk · Feb 4, 2019
Elon Musk
@elonmusk · Feb 5, 2019
💙 Mach Diamonds 💙
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Joe Rogan
@joerogan · Feb 2, 2019
Driving this teslamotors model S is truly one of the strangest experiences I’ve ever had behind the wheel of a car. It legitimately feels like something wrong is happening. Without a… instagram.com/p/BtYBIzqFsDo/…
Elon Musk
@elonmusk · Feb 5, 2019
Glad you like it
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Elon Musk
@elonmusk · Feb 4, 2019
Replying to @psalman03
Spark plugs ignite dual blow torches that ignite preburners & main chamber
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