The tweet archive.

“As always, Tesla is looking for hardcore AI engineers who care about solving problems that directly affect people’s lives in a major way. https://t.co/0B5toOOHcj http://Tesla.com/AI”

“@engineers_feed 49 years later, games are photo-realistic 3D worlds. What does that trend continuing imply about our reality?”

“@engineers_feed 🤣”

“@SirineAti @engineers_feed Yes”

“@engineers_feed Hell of a rocket! Probably would have succeeded if Korolev had not died. Hopefully, Starship is more fortunate.”

“@teslaownersSV @UniverCurious Electrical & mechanical engineering”

“@Teslarati @13ericralph31 Limiting factor for first launch is regulatory approval. Thereafter, fundamental issue is solving engine production. Prototypes are easy, production is hard.”

“@John_Gardi True, although it will look clean with close out panels installed. Raptor 2 has significant improvements in every way, but a complete design overhaul is necessary for the engine that can actually make life multiplanetary. It won’t be called Raptor.”

“@teslaownersSV @SamTwits He came damn close to killing Tesla through a combination of bad management decisions, driving out talented people, bad engineering, major blunders in supply chain & an elaborate deception about the true cost & schedule of the Tesla Roadster.”

“@NASASpaceflight Good static fire with all six engines!”

“@Teslarati @KlenderJoey I’d like to express appreciation to Tesla Autopilot engineering & QA for working round the clock all weekend to resolve the problem”

“@dear_mmoon @engineers_feed 🤣”

“@engineers_feed Wasn’t easy”

“@Erdayastronaut Got to 321 bar before RUD, but cause may be due to oxygen inlet pressure too low, rather than engine issues”

“@engineers_feed Hey QT314 😉”

“@engineers_feed 🤣”

“@matty_mogul @Tesla @karpathy Just want to emphasize this is the work of hundreds of awesome engineers in both software & hardware, over 1000 data analysts & billions of owner miles”

“@Teslarati @KlenderJoey This was *extremely* difficult. Huge props to Tesla engineering, supply chain, production & key suppliers.”

“@Nick_Stevens_Gr Haha so true of rocket engine development”

“@carsonight Not super surprising, given that internal combustion engine cars literally have “combustion” in the name”

“@starbasergv Not a tiny engine”

“@WatchersTank @SpaceX With that, Ship is basically begging for an extra 3 engines”

“@Erdayastronaut @Caspar_Stanley No, bottom static aero pushes engine section back, counteracting Starship’s low center of mass on reentry caused by the engine section. Aiming for 60 to 70 deg angle of attack during high heating portion of flight. Don’t want to reenter with engines blasted by plasma.”

“@engineers_feed 🤣”

“@WholeMarsBlog @NASASpaceflight @BBCAmos Higher structural margins overall are needed for reuse, plus: Booster - Grid fins for aero control - Boostback & landing propellant tanks - Protecting engines from entry loads Ship - Body flaps for aero control - Deorbit & landing propellant tanks - Heat shield”

“@thesheetztweetz 4 significant items: - Final heat shield tiles for ship - Thermal protection of booster engines - Ground propellant storage tanks - QD arm for ship 2 weeks.”

“@ID_AA_Carmack I have great admiration for John’s engineering ability! What he did with Armadillo was incredible. I’ve tried to convince him many times to join SpaceX, but he has always declined (sigh).”

“@aparanjape @Erdayastronaut @SpaceX I do think that great design & engineering of products are critical, but manufacturing & supply chain require orders of magnitude more work”

“All 6 engines mounted to first orbital Starship https://t.co/l5QnQRSg3D”

“Installing Starship booster engines for first orbital flight https://t.co/yhqrNFBclh”

“@engineers_feed I do spend a bit of time pontificating tbh”

“@Erdayastronaut Raptor V2.0 is a major improvement in simplication, while also increasing thrust from ~185 tons to ~230 tons. Long-term goal is engine cost below $1000/ton of thrust.”

“Completing feed system for 29 Raptor rocket engines on Super Heavy Booster https://t.co/uARWx2HYTr”

“@TroyRubert @SamTwits @engineers_feed I am already chewing on so much glass that I have chipmunk cheeks!”

“@SamTwits @engineers_feed I’m so dying to do a supersonic vtol electric jet! But I already have way too much on my plate. Any more work and my brain will explode.”

“@DimaZeniuk @truth_tesla That’s a low bar. Carmakers have never valued software engineering highly, although VW is trying to change that. I personally wrote software for 20 years & have huge respect for software engineers. Tesla is on par with best software companies & is leader in real world AI.”

“@engineers_feed Haha”

“@Teslarati Large pouch cells undergo significant volumetric changes at high state of charge. Even so, fire risk is probably less than gasoline cars. There are over 200,000 combustion engine car fires every year in US alone. It’s literally in the name. https://t.co/uJPlB3IbzQ https://www.nfpa.org/-/media/Files/News-and-Research/Fire-statistics-and-reports/US-Fire-Problem/osvehiclefires.pdf”

“@Model3Owners Dry electrode is a key piece (one of many pieces) of the puzzle for lowering cost of lithium batteries. That said, it has required an *immense* amount of engineering to take Maxwell’s proof-of-concept to high-quality, volume production & we’re still not quite done.”

“@TLPN_Official @SpaceX Depending on progress with Booster 4, we might try a 9 engine firing on Booster 3”

“@engineers_feed There’s a corner case where brick density is same density as water, reaching bottom due to momentum”

“@engineers_feed A classic”

“@crheller @SpaceX Glad it’s working! The sheer amount of work done by SpaceX engineering, production & launch teams is amazing. Ping should improve dramatically in coming months. We’re aiming for <20ms. Basically, you should be able to play competitive FPS games through Starlink.”

“@vincent13031925 Final decision made earlier this week on booster engine count. Will be 33 at ~230 (half million lbs) sea-level thrust. All engines on booster are same, apart from deleting gimbal & thrust vector actuators for outer 20.”

“@SciGuySpace Yes. It will be the highest output & most advanced rocket engine factory in the world.”

“@WatchersTank @Erdayastronaut The challenges of operating at Starbase left us with no choice but to put engine production in McGregor”

“@Erdayastronaut By “volume production”, I mean 2 to 4 engines per day. That’s super high volume for big rocket engines, but low volume by automotive standards.”

“@28delayslater @karpathy Accurate assessment. Btw, Autopilot software is technically led by Ashok, Andrej & Milan, but it’s very much a “knights of the round table” structure. There are so many talented engineers on Autopilot/AI team & they decide for themselves what to work on. Kinda like Valve.”

“@DavidNagySFgang Booster engines are not shrouded by skirt extension, as with ship. Engines extend about 3m below booster.”

“@thejackbeyer @MarcusHouse @artzius Center engines on ship will be same as booster engines. This is basically Raptor 2. Raptor Vacuum would be only variant. Tbd as to whether to commonize R-Vac with Raptor 2 (more thrust), keep same or tighten throat (more Isp). Adding 3 more R-Vac to ship with max Isp maybe …”