Elon Starship Statements
Starship statements by Elon, SpaceX and Sources for reference as it can be hard to find them on Twitter or other places on the internet
SpaceX@SpaceX [See link for clip]
- Completed a full duration test fire of the Raptor Vacuum engine at SpaceX’s rocket development facility in McGregor, Texas 7:21 PM · Sep 24, 2020
- Most likely, all flaps will fold after landing to reduce wind tip over force. There may be some cases where flaps deployed help stability (change in wind direction), in which case one or more flaps will extend. 1:53 PM · Sep 21, 2020
Elon Musk@elonmusk Replying to @elonmusk @Neopork85 and 2 others
- We really need better legs for Starship. They’re coming. 1:54 PM · Sep 21, 2020
Matt 🚀🌌@MatthewCable6 Replying to @elonmusk and @ErcXspace
- It's nuts now! SN8, 9, 10 and 11! what SN Starship do you think could reach orbit first when SpaceX begins to do orbital tests?
- Just a guess, but probably mid teens. Booster & stacking on orbital pad are likely limiting factors. We’ll build several ships just to improve the production system.
Sept. 14 2020
- You know it’s Endgame when SN8 does this. [Simulation]
- Pretty accurate simulation, although SN8 will use 3 Raptors. If SN8 craters, SN9 & SN10 are close behind. High production rate allows for fast iteration.
Sept. 14 2020
- SN8 Starship with flaps & nosecone should be done in about a week. Then static fire, checkouts, static fire, fly to 60,000 ft & back.
Elon Musk@elonmusk Replying to @elonmusk
- One way or another, excitement guaranteed! Support of greater Boca, Padre, Brownsville community is very much appreciated.
Sep 12, 2020
- The first Raptor Vacuum engine (RVac) for Starship has shipped from SpaceX’s rocket factory in Hawthorne, California to our development facility in McGregor, Texas
[Pic of 2 Raptors] 154 KB 5:17 PM · Sep 4, 2020 Elon Musk@elonmusk Replying to @SpaceX
- Worth noting that thrust is only slightly higher with the big bell nozzle version. Larger bell is primarily for efficiency in vacuum. Aiming for 380+ sec Isp for RVac long-term. Initially likely to be ~372. Sep 4 2020
- Turns out you can make anything fly haha
[SEE SPACEX SN6 FLIGHT CLIP] 10:02 PM Sept. 3 2020
- Starship SN6 flew asimilar hop to SN5, but it was a much smoother & faster operation
4:40 PM · Sep 3, 2020
- Thanks for the reply on that. Is there currently a Super Heavy thrust structure being built? I can only imagine the design that needs to go into making something that can support the huge thrust of 30+ Raptors.
- Yes. This is the hardest part of the booster design. Aug 29, 2020
Elon Musk@elonmusk Replying to @Neopork85 @SpaceX and 7 others
- Booster design has shifted to four legs with a wider stance (to avoid engine plume impingement in vacuum), rather than six Aug 29, 2020
- I think @elonmusk enjoys watching rocket nerds making guesses about construction at Boca Chica.
1:04 PM · Aug 22, 2020· Elon Musk@elonmusk Replying to @DJSnM
- They’re quite accurate!
- Any update on this year’s Starship event? Still aiming for September? Rocket
- Neuralink this month & Tesla next month, SpaceX probably October. We will have made a lot of progress by then. Might have a prototype booster hop done by then.
- For just a booster hop you could probably get away with 3 or 6 Raptors only... But it’ll be a while before you have 2 dozen + similar and capable engines for an orbital booster, right?
- Only need 2 engines
- Raptor reached 230 mT-F (over half a million pounds of thrust) at peak pressure with some damage, so this version of the engine can probably sustain ~210 tons. Should have a 250+ ton engine in about 6 to 9 months. Target for booster is 7500 tons (16.5 million pounds) of thrust.
Owen Sparks Earth globe americas@OwenSparks Aug, 2020 Replying to @elonmusk @PPathole and 3 others
- Would starship be able to lay down on the surface of moon / mars to make a permanent habitat if needed? Linear seems better than vertical for long term use.
Everyday Astronaut@Erdayastronaut Aug 25,2020 Replying to @elonmusk @dauqhx and @universal_sci
- How will lunar starship refuel? It needs to go back to Earth orbit, and then get refueled by multiple tankers to do that round trip each time right? Can’t make methane on the moon sans a large cow farm, right? 😂
- Starship propellant is ~78% oxygen, so an O2 plant on the moon would be enough. Otherwise, we could brute-force it with tankers to low Earth orbit. That’s probably faster.
- Didn’t know it was still this much of a debate. Water tower or launch pad? (When will you people stop thinking SpaceX is building water towers all the time) :Face with tears of joy: Water Tower 19.8% Orbital Pad 47.6% Both! 13.5% What? 19.1% 20,958 votes · 14 hours left
Aug 24, 2020 Elon Musk@elonmusk Replying to @Erdayastronaut
- Orbital launch mount
- Raptor engine just reached 330 bar chamber pressure without exploding!
- SN40 is about to be tested & has several upgrades over 330 bar engine. For reference, 330 bar on Raptor produces ~225 tons (half a million pounds) of force.
Aug 17, 2020
- Here is a graphic I made of America's Fairings! Looks like we're going to be bringing some big stuff to space (and the Moon).
- All the fairings shown are scale to one another [ULA - SpaceX Falcon and Starship - Blue origin comparison graphic shown]
- Starship fairing will actually have more height than shown here. Dome will be flatter & more of tip is accessible. Usable volume ~1000 cubic meters.
5:28 PM · Aug 13, 2020· Everyday Astronaut@Erdayastronaut Replying to @elonmusk @KenKirtland17 and 6 others
- Will there still be a header tank up in the nose on later Starships?
- Yes, integrated with the tip of the nose
- SN7 will be new alloy test tank taken to burst pressure. SN8 will have body flaps & nosecone.
11:17 AM · Aug 11, 2020
- Starship takes flight [SPACEX VIDEO CLIP]
Aug 4, 2020
HiSTORIC LAUNCH Aug 4, 2020 Pranay Pathole@PPatholeReplying to @elonmusk @TrevorMahlmann and @arstechnica
- What's next, Elon? 20km hop?
- We’ll do several short hops to smooth out launch process, then go high altitude with body flaps
- Progress is accelerating
- Mars is looking real
Aug 4, 2020
Elon Musk@elonmusk Aug 2, 2020
- When space travel becomes as common as air travel, the future of civilization will be assured
Elon Musk@elonmusk Replying to @NASASpaceflight
- Scrubbed for the day. A Raptor turbopump spin start valve didn’t open, triggering an automatic abort. We’ll figure out why & retry tomorrow.
5:44 PM · Aug 3, 2020
- Starship SN5 just completed full duration static fire. 150m hop soon.
1:05 PM · Jul 30, 2020 Elon Musk@elonmusk
1:31 PM · Jul 30, 2020
- SpaceX begins building upgraded Starship prototype (Photos by @BocaChicaGal)
- A Starship part spotted on July 20th confirms that SpaceX is already well into the process of building a significantly upgraded full-scale prototype. Following in the footsteps of five or six...
Elon Musk@elonmusk Replying to @Teslarati and @BocaChicaGal Jul 21, 2020
- We’re rapidly changing alloy constituents & forming methods, so traditional names like 304L will become more of an approximation
- SpaceX is building floating, superheavy-class spaceports for Mars, moon & hypersonic travel around Earth
Gavin - SpaceXFleet.com@SpaceXFleet
- SpaceX is hiring for Offshore Operations Engineers in Brownsville.
From the post: "Work as part of a team of engineers and technicians to design and build an operational offshore rocket launch facility" With thanks to @CowboyDanPaasch for the scoop. https://boards.greenhouse.io/spacex/jobs/4764403002?gh_jid=4764403002 Russ Parrish@russ_parrish
- Refurb oil platforms with a hyperloop to transport from land?!
- Pretty much Jun 16
In reference to SN7 test tank: Elon Musk@elonmusk Replying to @SciGuySpace
- Tank didn’t burst, but leaked at 7.6 bar. This is a good result & supports idea of 304L stainless being better than 301. We’re developing our own alloy to take this even further. Leak before burst is highly desirable.
3:06 PM · Jun 15, 2020
- Manhole size rupture on #Starship SN7 test tank but it still stands. They're getting closer to perfection. #SpaceX #BocaChica #Texas
Elon MuskElon Musk@elonmusk
- No problem, we can buff it out
- Maybe some Flextape Jun 15
- Actually, we’re on SN30 for Raptor
1:39 PM · Jun 10, 2020
- Quite a piece! I should credit Soviet/Russian engine work in the 80’s as being a factor in deciding to switch from H2 to CH4. They demonstrated excellent performance on test stands, with Isp up to 380 secs.
10:52 AM · Jun 10, 2020· Elon Musk@elonmusk Replying to @elonmusk and @SciGuySpace
- Combined with SpaceX deep subcooling of propellants to near liquefaction temp of N2, use of common dome (CH4 & O2 liquid at similar temps) & higher T/W of engines enables de facto higher delta-V than an H2/O2 stage
- What ever happened to Raptor upperstage for FH? I assume it’s higher TWR and higher min throttle would crush about any payload, and adding another prop / manufacturing complexity wouldn’t likely be worth it. But there sure were talks of it for a while with the Air Force.
Everyday Astronaut@Erdayastronaut Replying to @elonmusk and @SciGuySpace
- I know you’d never add unecessary complexity in the manufacturing line, but I’m still surprised you never made a closed cycle Merlin Vacuum to get closer to that 380 mark. Especially with SpaceX’s experience with ox rich preburners now with Raptor Rocket
- We could never reach 380 Isp with RP/kerosene. CH4 has higher Isp potential on paper, but even better in practice. With CH4, you can reach >99% of max theoretical combustion efficiency, but RP is ~97% on a good day & requires desooting of turbines between flights.
- How different will Lunar Starship be from a standard atmospheric Starship? Like those thrusters on top seem like a pretty big shift from a standard Starship... are they still methalox? Related to SuperDraco in any way?
Elon Musk@elonmusk Replying to @Erdayastronaut
- Forward thrusters are to stabilize ship when landing in high winds. If goal is max payload to moon per ship, no heatshield or flaps or big gas thruster packs are needed. No need to bring early ships back. They can serve as part of moon base alpha.
- Starship Production Complex Boca Chica, Texas
Chris B - NSF@NASASpaceflight · Jun 6
- Amazing how much the place has grown. Any more additions we can look forward to? Like another High Bay, some more big tents, etc?
Elon Musk@elonmusk Replying to @NASASpaceflight
- Giant high bay coming soon
4:57 PM · Jun 6, 2020·Twitter for iPhone Chris B - NSF@NASASpaceflight · Jun 6 Replying to @elonmusk
- Oh my! And we thought the High Bay currently being used to stack Starship was impressive. Something for Super Heavy stacking I assume? KSC VAB scale? Astonished face
Elon Musk@elonmusk · Jun 6
- Yeah, for Super Heavy stacking
Everyday Astronaut@Erdayastronaut · Jun 6
- Holy moly!!! How tall will the building be? 80m tall-ish? Thinking face
Elon Musk@elonmusk · Jun 6
- SN4 passed high pressure (7.5 bar) & engine thrust load at cryo 9:48 PM · May 9, 2020
- Starship SN4 passed static fire
8:26 PM · May 5, 2020
- SpaceX has been selected to develop a lunar optimized Starship to transport crew between lunar orbit and the surface of the Moon as part of @NASA’s Artemis program! https://go.nasa.gov/3f0o3ux [See pic of Moon Starship with side thrusters]· 10:09 AM · Apr 30, 2020
- With large habitable and storage volume, Starship is capable of delivering significant amounts of cargo for research and to support robust operations on the lunar surface to enable a sustainable Moon base
- Last year, NASA announced Starship as eligible for the Commercial Lunar Payload Services (CLPS) initiative – to deliver payloads between Earth and the Moon, and to enable humans to return to the Moon
- And just last month, NASA selected SpaceX to deliver supplies to Gateway!
- Quote "TweetSpaceX@SpaceX · Mar 27
- SpaceX will launch a variant of Dragon, optimized to carry more than 5 metric tons of cargo to Gateway in lunar orbit https://twitter.com/JimBridenstine/status/1243604344748101634"
Elon Musk@elonmusk Replying to @HarryStoltz1 and @JaneidyEve
- Static fire with Raptor hopefully later this week 10:15 PM · Apr 26, 2020
Replying to @elonmusk @HarryStoltz1 and @JaneidyEve
- Raptor as in one or three?
- Just one. SN5 will get three.
- Congrats! 🚀 What bar strength did it reach!? 9:59 PM · Apr 26, 2020
- 4.9 bar. Kind of a softball tbh, but that’s enough to fly!
- SN4 passed cryo proof! 😅 9:44 PM · Apr 26, 2020
Pranay Pathole @PPathole Replying to @elonmuskand @Cardoso
- Will SN4 be doing a 150m hop or 20km?
8:35 AM · Apr 26, 2020· Elon Musk@elonmusk Replying to @PPathole and @Cardoso
- 150m 8:36 AM · Apr 26, 2020
- SN4 passed ambient pressure test 8:21 AM · Apr 26, 2020
- Aiming for cryo pressure test tonight 8:27 AM · Apr 26, 2020
- 😍 this might be the best picture of an mVac we’ve ever seen!!! Hilarious to think this is a “simple” engine as far as rocket engines go Face with tears of joy jeeeeez! Congrats on the 100th!!!
@SpaceX and @elonmusk 4:46 PM · Apr 24, 2020 Quote Tweet SpaceX@SpaceX
- Falcon 9’s second stage engine at our Hawthorne headquarters before shipping to Texas – it is the 100th second stage engine SpaceX has built
- Merlin is very simple compared to Raptor
- Are you confident enough that a landing starship can get the skydive maneuver right on the first try? Seems risky with fuel farm being so close to landing pad. Or aiming for soft water landing first? 5:12 PM · Apr 24, 2020
- No, good chance of RUD (rapid unscheduled disassembly) event, but landing pad is separated from launch pad
- SN5 nosecone has been stacked in the high bay at SpaceX Boca Chica. Star-struckRocket
@NASASpaceflight Elon Musk@elonmusk
- These won’t be strictly coupled to ship serial number. Might be on SN5 or might just be used as a manufacturing pathfinder.
Toby Li@tobyliiiiiiiiii Replying to @elonmusk
- What Is the latest SN number for the raptor engine? 7:00 PM · Apr 15, 2020
- Will SN4 hop to 20 km or just 150 m if the pressure tests and static fire goes well? 7:29 PM · Apr 15, 2020
- SN4 won’t get flaps, so can only do flights with engine on. Just did a reset this week on flap, actuator & static aero design. Either SN5 or SN6 will get flaps.
- Thrust section seems intact, any plans to reuse it, or just build a new one? 12:23 AM · Apr 5, 2020
@Erdayastronaut and 3 others
- Hard to hide anything from the Internet! Yeah, we’re going to reuse much of the thrust section. 12:24 AM · Apr 5, 2020
- StarShip SN3 has ruptured due to cryogenic pressurization testing, on to SN4.🚀 (Source:@LabPadre) 12:34 AM · Apr 3, 2020
- We will see what data review says in the morning, but this may have been a test configuration mistake 2:13 AM · Apr 3, 2020
Elon Musk@elonmusk Replying to @spaceXcentricand @LabPadre
- Some valves leaked at cryo temp. Fixing & will retest soon. 7:36 PM · Apr 2, 2020
- Starting to get chilly in South Texas with liquid nitrogen being pumped into SN3 for a pressure test (see frost ring). Live video below:
https://youtube.com/watch?v=iw5bYl8v3nY 3:09 PM · Apr 2, 2020
- SN3 passed ambient temperature pressure test last night, now doing cryogenic
- Yes, v close! Nice work. Those are V0.9 legs, so major upgrades coming. Need wider span, longer stroke & ability to auto-level for uneven ground or leaning into high winds. 2:12 PM · Apr 1, 2020
2:12 PM · Apr 1, 2020· Everyday Astronaut@Erdayastronaut Replying to @elonmusk and @kimitalvitie
- Yes!!! Auto leveling!!! That’s going to be key for other planetary bodies!!! Will SN4 probably still just use these for now though? Good enough for these controlled environments :Ok hand: 2:14 PM · Apr 1, 2020
- Yeah 2:15 PM · Apr 1, 2020
- The legs extend & telescope out, so are longer than they seem, but not as long as they will be for SN4+ [about SN3] 8:11 AM · Mar 31, 2020
- Now on launch stand [Two Pics on Twitter] 11:27 AM · Mar 30 2020
- Is Starship development still on track?
- Why was a new Dragon variant proposed for Lunar Gateway resupply missions?
- Hopefully, Starship will have enough flight history to substitute for Dragon for NASA missions too 11:36 AM · Mar 30, 2020
- SN3 [Two pictures] · March 26, 2020
- A recent ArsTechnica article mentioned Starship will be 17 steel rings + nosecone. Is that correct? Independent measurements suggest it should have 20 rings.
- Pretty close. Design is evolving rapidly. Would be great to flatten domes, embed engines & add ~1.5 barrel sections of propellant for same total length. Also, current legs are a bit too small. 9:55 pm · Mar 17, 2020
- Some parts will use 304L, as it has higher toughness at cryo temps. Will move to internally developed alloys probably end of year. 6:18 PM · Mar 14, 2020
- Sleeving SN2 dome in the high bay 12:55 AM · Mar 3, 202
Elon Musk@elonmusk Replying to @flcnhvy and @JaneidyEve
- We’re stripping SN2 to bare minimum to test the thrust puck to dome weld under pressure, first with water, then at cryo. Hopefully, ready to test in a few days. · 12:49 AM · Mar 2, 2020
- Third Raptor test stand activated at SpaceX’s rocket development facility in McGregor, Texas. In the past year, the Raptor team has accumulated over 3,200 seconds of testing across 18 engines, including multiple full-power firings
SpaceX@SpaceX Last year, we completed a 150 meter hop with one Raptor engine, and the Starship team is gearing up for more spaceflight activities in Boca Chica, Texas · Feb 27, 2020
- Testing Raptor in vertical configuration (on the giant tripod) should allow us to simplify some aspects of the engine design Elon Musk@elonmusk · Feb 27
- Will the fins still be actuated by electric motors & batteries? If yes, does utilizing Plaid powertrain & upcoming new Tesla battery tech that you’ve teased mean a significant improvement in efficiency & power?
Elon Musk@elonmusk Replying to @flcnhvy
- Yes · Feb 25
Pauline@justpaulinelol Replying to @elonmusk
- Still 3 Raptors planned or other plans? · Feb 25,2020
- 3 on SN2 · Feb 25
- Starship SN1 tank preparing for Raptor attachment & static fire · Feb 25,2020
- SN2 tank integration starts this week with much less circumferential pucker. Thanks Fronius! · Feb 25,2020
Pranay Pathole@PPathole Replying to @elonmusk and @JohnHanzl
- I wonder if having the O2 header tank in the tip is strategic to allow the boil-off to be consumed by the occupants? Conversely, keeping the CH4 header tank and associated piping away from the occupants is better for safety. · Feb 20,2020
- It’s mostly to balance the ship during entry. After delivering satellites, the front is light & back is heavy due to engines & landing legs. · Feb 20,2020
- High bay for stacking Starship engine bay, propellant tanks & fairing (fka nosecone) sections is almost done! · 2:29 AM · Feb 20, 2020
- Will starship be moved to launch pad vertically? What is NASA doing with their old Shuttle and Saturn crawler carriers?
Elon Musk@elonmusk Replying to @sydney_ev
- Attach wheels to the landing legs & tow Starship to the launch pad · Feb 20
Stephen Ross@pentaquarky Replying to @elonmusk and @Erdayastronaut < NEED LINK, could not re-find
- How do you keep the oxygen in liquid form? Insulated header tank? · 9:57 PM · Feb 19, 2020·
Replying to @pentaquarky and @Erdayastronaut
- The whole nose tip has to have heat shielding for atmospheric entry at Mach 25+ anyway, so is effectively already insulated well in orbit · Feb 19,2020
9/22/2019 tweet:SpaceX Foundry is used exclusively for advanced alloys/shapes for Raptor, incl our superalloy, SX500
TESLARATI@Teslarati · Sep 9, 2019
- SpaceX tests ceramic Starship heat shield tiles on Starhopper's final flight test. Although it flew under the radar in the heat of the moment, SpaceX’s final Starhopper test flight – completed on August 27th – happened to include an unusual bit of test hardware – eight (give or...
Elon Musk@elonmusk · Sep 9, 2019
- The hex tiles are actually mechanically attached, which is important to allow for very high temp on back side of tile that would destroy any adhesive. Marshmellow-looking thing is a rope seal.