The tweet archive.

“@engineers_feed 🤣”

“@Erdayastronaut Yeah, engines did great!”

“Much of what people think of an science is actually engineering, eg no such thing as a “rocket scientist”, only rocket engineers. Latter is who put humans on the moon.”

“Science is discovering the essential truths about what exists in the Universe, engineering is about creating things that never existed https://t.co/aIEUtHoPxM https://en.m.wikipedia.org/wiki/Engineer”

“@engineers_feed Paint makes a hell of a difference”

“@flcnhvy @thesheetztweetz Many small improvements, but overall similar. Wiring is more robust, engines are more mature, nosecone is sealed better, etc.”

“Good Starship SN8 static fire! Aiming for first 15km / ~50k ft altitude flight next week. Goals are to test 3 engine ascent, body flaps, transition from main to header tanks & landing flip.”

“@StarshipFairing @MarcusHouseGame Not bad! We will definitely need more engines if we make the cargo bay all propellant, but it’s probably smarter than a whole new shorter external hull.”

“@Erdayastronaut @rweb11742 The most amazing thing about rocket engines is that they *sometimes* don’t blow up! The amount of power going through them boggles the mind.”

“@DJSnM @Erdayastronaut @CharlesNOtrumps @rweb11742 Absolutely. Production/testing of rocket engines is over 90% of the problem. This is true in general. For cars, production is over 99% of the problem. That 1% inspiration is very important, but it’s less than 1% of the pain.”

“@Erdayastronaut @CharlesNOtrumps @rweb11742 Our first Merlin engine design was really bad tbh. Nothing worked well & some parts didn’t work at all. 18 years later & thousands of upgrades make it a great GG cycle engine.”

“@Erdayastronaut @rweb11742 Damn, that’s not easy! I spent quite a bit of time looking at Russian/Ukrainian engines. They’re good.”

“@austinbarnard45 Burst disk worked, so vehicle appears to be ok. We’ll have to swap out at least one of the engines.”

“@tobyliiiiiiiiii @SpacePadreIsle @austinbarnard45 Maybe melted an engine preburner or fuel hot gas manifold. Whatever it is caused pneumatics loss. We need to design out this problem.”

“@teslaownerssv @Tesla Thanks to a lot of great Autopilot/AI hardware & software engineers at Tesla!”

“Recruiting ace engineers for Giga Berlin! Will interview in person tomorrow on site. Send resume to 25Guns@Tesla.com.”

“@TechAmazing Einstein was great, but did not succeed at engineering (and he tried)”

“@engineers_feed Haha”

“@Nigel_Lockyer I could not be more excited about the new supercollider! That said, while it is considerably larger, I don’t think it necessarily requires all that much incremental engineering.”

“@MalekKhelifi24 @9inety6Prince @engineers_feed Now we’re talking. Also, Stephenson 2-18 is in the constellation Scrotum haha.”

“@engineers_feed Sigh … there should be a new supersonic jet, this time electric”

“@Erdayastronaut Those engines could go 300 bar, but would be dicey. Pushing it for near-term tests doesn’t achieve anything, but I’m confident Raptor will do 300 bar for orbital flights.”

“Data from 3 engine Starship static fire this morning looks good. Proceeding with nosecone mate.”

“Will be less roomy with 3 vacuum rocket engines added https://t.co/pKtDFdiZYC”

“@jwangARK Tesla FSD computer’s dual SoCs function like twin engines on planes — they each run different neural nets, so we do get full use of 144 TOPS, but there are enough nets running on each to allow the car to drive to safety if one SoC (or engine in this analogy) fails.”

“@electricfuture5 We face a tough dichotomy of applying resources to the old architecture or applying them to the new. It’s not a question of money. If there was a “great engineer” factory, we would place a large order! Unfortunately, great engineers are very rare. This is solved in the FSD build.”

“@Erdayastronaut @PelleBrannvall @flcnhvy @Neopork85 @Caspar_Stanley @ErcXspace @MarcusHouseGame @FelixSchlang @C_Bass3d @nickhenning3d @SpaceX There are sensitive elements, but they’re on the inside. Also, a good telephoto lens will be able to capture what I’ve posted. And yeah, anyone who can reverse engineer what I’ve posted doesn’t need to reverse engineer!”

“@Teslarati Great work by SpaceX valve engineering & production!”

“@TashaARK Additive manufacturing of parts is still far too costly for cars, but can rapidly create tooling to accelerate pace of innovation. It’s already sensible for rocket engine parts. To the best of our knowledge, SpaceX is 2 or 3 years ahead of other companies in use of additive.”

“@ICannot_Enough @WholeMarsBlog Sandy Munro understands engineering”

“@klod_ua @Erdayastronaut @TrevorMahlmann @johnkrausphotos @Mike_Seeley Cryo pressure test succeeded, but a small leak opened up near the engine mounts, possibly due to differential shrinking”

“@ajtourville @MunroAssociates Sandy Munro understands engineering”

“@PPathole @Erdayastronaut There are some practical size constraints too. Can’t be too big to fit in the engine compartment. But, it could be a little bigger. 380 sec Isp would be nice.”

“@podcastnotes Genetic engineering is too slow unless you use a synthetic virus”

“A prior track record of exceptional achievement in engineering *is* required, but *no* prior experience working on the brain or human physiology is required. We will teach you what’s known about the brain, which is not much tbh.”

“@engineers_feed At first, I thought that was a parrot”

“@engineers_feed Seems like they should make a whole outfit out of that material”

“@Erdayastronaut I’m wearing your F-1 engine shirt right now!”

“@DisruptResearch Tesla R&D productivity is exceptionally good due to the caliber of engineering talent”

“@Teslarati Rawlinson didn’t design Model S. Prototype was done before he joined & he left us in the lurch just as things got tough, which was not cool. He did make some contributions to body/chassis engineering, but not to powertrain, battery, electronics or software.”

“@Erdayastronaut @PPathole @SpaceX We’re pretty close to the manufacturing size limit for a milled copper & steel jacket nozzle. Lot of complexity to add a nozzle extension to a sea level engine for small gain. Also hard to fit bigger engine nozzles on the booster.”

“@PPathole @SpaceX This is a test engine. Flight articles are fixed with no gimbal.”

“@engineers_feed Technically, James Watt measured a pony, added 50% & rounded up haha https://t.co/vnkO0MTrUC https://en.m.wikipedia.org/wiki/Horsepower”

“@Erdayastronaut @flcnhvy @DJSnM Only need 2 engines”

“@engineers_feed Astronaughty”

“@flcnhvy @Erdayastronaut @nextspaceflight Almost never need to replace whole engine, but some individual parts like turbine wheels need to be replaced over time. Similar to a jet engine.”

“@Erdayastronaut @nextspaceflight I don’t want be cavalier, but there isn’t an obvious limit. 100+ flights are possible. Some parts will need to be replaced or upgraded. Cleaning all 9 Merlin turbines is difficult. Raptor is way easier in this regard, despite being a far more complex engine.”

“@justpaulinelol @NASASpaceflight That’s engine SN. We’re building SN8 of the ship.”

“@NASASpaceflight 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.”

“Raptor engine just reached 330 bar chamber pressure without exploding! https://t.co/kVKRWksvaB”