How SpaceX Reinvented The Rocket Engine!

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[@TheSpaceRaceYT]

Get yourself a Displate deal using my link www.displate.com/spacerace or my discount code SpaceRace to access my special promo on all designs | 1-2 -> 27% OFF 3+ -> 37% OFF available until May 14th excl. Limited Editions, Lumino and Textra.

[@typerightseesight]

you gotta think of how america came to be and how many people will die trying to settle on mars.

[@maconcamp472]

A massless particle is more like Saturn!!🪐 We’re particles evolving!! Photons!! Stars!!⭐️ This is the quantum age!! We’re the universe going quantum!! We’re ghost particles!!👻👻👻👻👻👻 Dream of world peace and we’ll get there faster!!😇 We’re the universe dreaming!!🛌 Galaxy collisions!!!🌌 Twin flame connections!!🔥🔥 Quantum entanglement!!💫 It’s all connected!! We’re the universe dreaming and awakening!!🦕🧊🦖🧊🦣🧊🍄🧊 Black holes 🕳️ are like moons!! They’re seeds!! They’re our thoughts!!💭 We’re storytellers!! 📚

[@MoempfLP]

“Everyone knew it was impossible, until a fool who didn’t know came along and did it.” - Albert Einstein

[@i-love-space390]

Naaah. It was just that the industry was risk averse because of monopoly government contracts and stockholders that insist on immediate return on investment. Now that SpaceX has unleashed the venture capitalists, look how many little companies are developing their own rocket engines. Many are every bit as innovative as SpaceX. Stoke Space is one. They are developing full flow staged combustion engines with deep throttle capability and marrying them into a ring aerospike design around a heat shield for a fully reusable design for first AND SECOND stages of their vehicle. It's all about unleashing the money.

[@ptanticar]

Einstein said no such thing.

[@Sugarsail1]

@@ptanticar "Yes I did." - Albert Einstein

[@LizBrowne-do2li]

@@Sugarsail1 Did you use a OuiJa board to ask Einstein? He may have repeated it, but he did not invent the quote

[@lawrencenoyman350]

"Don't believe everything you read on the internet." -- Abraham Lincoln

[@AM-tu1rc]

I'm an engineer on Starlink and I always get lost when talking to my colleagues who work on Falcon and Starship. This really helped out!

[@Yuhyuhmuhmuh]

What do you do if you don't mind me asking?

[@RedRyan]

Well said!

[@davidplaysalot8726]

They're not your colleagues... noob 😂

[@wyattnoise]

Press "X" to doubt.

[@party4keeps28]

​​@@wyattnoise Why does this seem unlikely to you? I work on Starlink as well.

[@MiMiHaiNguyen]

Correction: the most powerful rocket engine is the Soviet-built RD-170(has 4 chambers). The F1 is only the most powerful single-chambered engine.

[@paulmichaelfreedman8334]

Some also set the criterium that it has to have flown a successful mission. The RD-170 does not have that honour.

[@Raoul_Volfoni]

The RD170 did fly on Energia

[@paulmichaelfreedman8334]

@@Raoul_Volfoni Are we mixing up RD-170 and RD-270?

[@MiMiHaiNguyen]

@@Raoul_Volfoni twice.

[@MiMiHaiNguyen]

@@paulmichaelfreedman8334 !?

[@TheNobbynoonar]

SpaceX did not reinvent the rocket engine-they have made big improvements to existing rocket engine technology and deserve the credit given to them.

[@ct1762]

you mean the 5x Starship disasters in a row? Musk saying it will have "lecture halls and game rooms and hld 100 people" that one?

[@Deontjie]

Pretty soon some idiot will compare the major technological advantages of SpaceX, Starlink, Tesla and Neurolink with their personal jealousy of Elon Musk.

[@chaneysheffield8185]

@@ct1762 disaster? 🤣dude they are TEST flights. the whole point is to get as far as you can and find the flaws. dummy.

[@Holyyew]

More like they have made an over complicated engine that is not powerful enough to get their oversized tin-can into orbit whilst empty

[@456MrPeople]

Do you know how many Falcons and Merlins they had to go through to reach where they are today? Now the Falcon 9 is the most reliable rocket in history. Why do you think Starship won't eventually reach the same level of success, even if it takes longer to do so because of the complexity of the design?

[@philip8201]

The voice is back!

[@TheSpaceRaceYT]

The Voice would never leave you

[@kirillperov3843]

@@TheSpaceRaceYT don't do that anymore

[@nth7273]

@@TheSpaceRaceYT How dare you use the Voice on me.

[@JoelSapp]

Computer generated voice? Merlin was pronounced super oddly

[@joshthalheimer]

@@JoelSapp Yes, stress on the first syllable, please.

[@foxmccloud7055]

Now, SpaceX has reinvented the spacesuit.

[@RedRyan]

That spacesuit looks insanely perfect! I guess the best exoskeleton is no exoskeleton? I'm loving it

[@TheSteveSteele]

Yeah, I don’t know about that. My father was head of NASA’s Spacesuit Reliability Division back in the Apollo and STS days. Spacesuits are no joke. Very high end technology. They use materials that us ordinary humans have no access to. He once brought an Apollo era spacesuit home with some of the proprietary materials. It was interesting to see. The point is though, a spacesuit has to be proven to be successful. It has to be perfect. The tests they run on spacesuits are incredibly harsh. From extended exposure to +- 250° F to +- -250° in a matter of seconds. There are several companies who are attempting to win that sweet NASA contract money. NASA isn’t going to give out the contract to SpaceX unless they deserve it, (unlike the near treasonous underhand deal that the traitor Kathy Lueders made with HLS. A rocket that uses 33 engines and has yet NOT to blow up, kinda like the Soviet N1, huh? Blue Origin should have received that contract.) Human lives are at stake and no fancy spacesuit is going to win because Elon thinks it will look cool. We’ll see.

[@Overmotor]

@@RedRyan It will need to be redesigned again (which I'm sure they're working on) to allow the suit to function by itself. As it stands right now it's sleek and compact but still tethered to the spacecraft. Once you add life support systems built in the design will change to accommodate the "backpack", however it will be much sleeker than anything we've seen so far. Very cool!

[@RedRyan]

@@Overmotor thank you for the great response. I is great to see a company with the resource of SpaceX to be giving this their all

[@nathannault2239]

​@@TheSteveSteeleAnd how's NASA getting its equipment to space now? Bloated government bureaucracies will NEVER be as efficient as private corporations. Period.

[@alexdylan04]

THANK GOD UR VOICE IS BACK

[@selectedvideos6180]

I believe this closed cycle engine is not new. The Soviet/ Russian RD180 was a closed cycle rocket engine designed in the 70's or 80's.

[@ironicplaid]

It’s also not the only engine with multiple shafts driving pumps. I’m pretty sure the RS-25 on the space shuttle and now SLS also has two shafts.

[@chaneysheffield8185]

that engine was designed for one use due to the pyrotechnic ignition.

[@squireson]

In general the over-hyped misstatements are a product of the narrator's ignorance of rocket engine history. These designers still stand on the shoulders of decades of work over a wide variety of approaches with all of the lessons learned (mostly) available as guidance. The incremental improvements and rebalancing have produced an excellent engine. From this we can conclude that Elon Musk is a super genius who should run the whole world.

[@peterfireflylund]

Full flow staged combustion isn’t just “closed cycle” combustion. There have been a few experimental FFSC engines before but Raptor is the only one that has actually flown.

[@vyacheslavvorobyov22]

@@peterfireflylund Still "reinvention" is quite wrong word here in the title. Actually Elaon mask engineers learn a lot from Soviet rocket engines and they made a next step in a long sequence of improvements already made by previous genterations of engineers. Too much pathos and propaganda as always in US movies.

[@weed...5692]

9:16 "Unlike every previous engine, which had used a single turbine [....], the Raptor is the only engine with dual gas turbines" - but the Soviets were the first to do that. Most people watching space documentaries have seen that documentary - "The engines that came from the cold", about soviet closed-cycle rocket engines.

[@Aexorzist]

Soviet engines are not full flow staged combustion. There is a big difference.

[@weed...5692]

@@Aexorzist Soviet engines were full flow staged combustion. There is no big difference.

[@ct1762]

@@weed...5692 the Muskrats are out in full force! Long live utter delusion!

[@peterfireflylund]

@@weed...5692no. Absolutely wrong. Look those engines up, look at the diagrams that describe the pumps and the plumbing.

[@TimRobertsen]

13:03 - The F-1 had a bit more than twice as much thrust:p About 680-790 metric tons. It had all the tons of thrust:p Credit given where credit is due;) And, the RS-25 had an efficiency/specific impulse of around 450s, which is unmatch by any rocketengine ever produced/used. The F-1 and the RS-25 are both unmatch in their domain. The Raptor is an incredibly good mix of power and efficiency :)

[@nealkonneker6084]

I am curious why the Raptor isn't bigger. Fewer larger engines would seem to reduce the complexity, fewer parts to fail. 33 engines on the starship just seems like asking for trouble.

[@markbrown8097]

And has proven to be troublesome.

[@ct1762]

yes and did you know it needs a minimum of 8x refuel missions before going to the moon> ? meaning it will sit there in space like a bloated grain silo getting rammed with fuel for over 6 weeks, then takes the astronauts. utter stupidity!

[@chaneysheffield8185]

@@ct1762 you just hatting to hate. wow you really must be a failure if you are this bad.

[@chaneysheffield8185]

its interesting, but i believe the size of the actual motor is for production ease reasons, smaller motor easier to move and has a smaller assembly team and time. just a guess willing to debate the topic.

[@peterfireflylund]

Bigger combustion chambers are generally harder (combustion instabilities are worse). Bigger things are also harder to make (and might require bigger tools).

[@MBSfilms77]

I feel really bad about the feedback (including mine) on the last video about thinking that guy’s voice was AI

[@TheSpaceRaceYT]

All good!

[@roqua]

8:52 until the end of the segment (3-4 minutes later) is a great explanation for newbies who are excited to learn about rocketry, cycle types and Raptor's innovations, but who run into a proverbial brick wall with many dizzying attempts to describe these things elsewhere. Great work! 👍

[@jrf870]

Thank you for all the hard work you put into these videos!

[@AlexandruVoda]

6:53 Correction, SpaceX were certainly not the first to use methalox as a propelant (they are the first at the scale of Starship). At the very least, NASA's Project Morpheus is a precursor for both propulsive landing and for use of methalox. RS-16 and RD-0169 are also methalox engines that predate SpaceX's Raptor. The Full Flow engine however is indeed a world first by SpaceX AFAIK.

[@Pocketkid2]

This is a most excellent video! It is simple and visual and has enough detail that an engineer such as myself who appreciates science but does not know that much about rocket technology can appreciate what is going on at SpaceX!

[@SLane249]

I was always confused about open/closed cycles and full flow. Your explanation has helped me understand. Thank you.

[@peterfireflylund]

Everyday Astronaut has some really good videos about it. He also has one about the entire (huge) family of Soviet rocket engines. They were quite impressive! (But Raptor is better.)

[@uncleal]

The de Laval nozzle is a thermodynamic thing of divine beauty. Appreciate a rocket "engine" from its elegant thermodynamics. BTW, "kerosene" That was naphthalene, a high-melting solid and perhaps the worst class of fuel imaginable (including massive loss of internal energy via 4n+2 aromaticity, plus graphitization). CH4 is hydrogen with a built-in supercompressor. All the fun is in the footnotes.

[@Randommemers]

Well constructed video ❤

[@TheSpaceRaceYT]

Thank you

[@im_agine852]

That was f'n GREAT. Thanks

[@TheSpaceRaceYT]

We're really glad you liked it. Thank you!

[@zam6877]

Great explanation Simple, so not burdened with alot of terminology and hitting all the main introductory points Thanks

[@Vermiliontea]

The Merlin 1D represents what could be done with the available time and money at the time, but that doesn't mean it didn't have a demanding and specific mission requirement. SpaceX rocket design starts with the goal of lowest possible cost of payload to low Earth orbit. This requirement trumps everything else. The consequence is that you find yourself with a set of artificial "musts", because otherwise there's no point in doing it at all. So the question is not so much if it's "possible", but *_how_* it can be possible. What enters into this process is that you must reuse as much of the rocket as possible. What eventually comes out of it, is a two-stage rocket, without solid-fuel boosters, a single rocket fuel that must be not hydrogen, and not hypergolic. A rather small rocket engine that need a very high thrust to weight ratio, must be throttleable, and must be a mass-production item. The Raptor is a product of the exact same process, only this time there are no compromises involving time and money. And it has to be the extremest thing possible, because otherwise it would not reach the required thrust to weight ratio with the methane fuel, nor would it reach the required thrust per nozzle area. Its thrust-performance for a first stage is a must, and reaching that with methane as fuel is not easy. Which is why ULA Vulcan is effectively a three-stage rocket with its solid-fuel boosters.

[@billthomas8994]

Nice analysis

[@adam_belounis.]

Can't be more exited , what a wonderful time to be alive ❤

[@bournejsn]

So relieved when you started from the Merlin engine and not the beginning of Rocketry LOL phew!

[@johnstewart579]

Thank you for this educational video. Keep up the good work

[@user-pw4mj2tz2h]

Thanks GOD!!!! THE VOICE IS BACK!!!!!!❤

[@Intellistan]

Outstanding production. Absolutely awesome

[@gamereditor59ner22]

Thank you for the information and keep it up!

[@hoodedcreeper2465]

The throat is actually where the gas hits supersonic speed. Normally a narrowing the opening like in jet engines would accelerate the gas because of Bernoulli's principal. However at supersonic speed that works backwards.

[@DaT0nkee]

Actually Raptor originally was designed as a hidrolox engine, they switched to methane for economic reasons. As well as the rest of the industry.

[@anthonylaiferrario]

One quick correction. Raptor doesn’t require stage 0 spin start support. We see all stage 2 raptors start in flight and we see a number of stage 1 raptors restart in flight

[@BagelmanSupreme]

This is true, but it requires fuel and some special engineering to spin them up, and you can only do that a limited number of times depending on mission parameters. So yes, the starship booster COULD do its own spinprime at launch (and does when landing), but stage zero still does this as an integral part of the launch process, reducing the number of restarts the booster needs to be able to accomplish solo by 1

[@sauceboss1846]

@@BagelmanSupremeyou both are right and wrong. The outer 20 engines have no ability to relight so they rely on stage zero start them up while the inner 13 gimbal engines have the ability to spin up multiple times during flight so they aren’t hooked into stage zero like the 20 Outer

[@jayman488]

Nice video, but the Raptor is not the first engine to use two turbines. The space shuttle's RS-25 engines have two fuel rich preburners and turbines. The Raptor is, however, the first full flow staged combustion cycle engine to actually fly, although others have been tested.

[@ianPedlar]

Gosh you're just brilliant at explaining these things!

[@jswebbproductions9785]

wow, what a awesome video! very well designed and researched and the original voice IS BACK!! One of the best videos I've seen from this channel! And great job explaining how rocket engines work, I finally can begin to understand it! btw, much love to the voice of the last video, nothing personal against him, just prefer your voice!! congratulations on a job well done!

[@kirillperov3843]

A live voice is always better than AI

[@TheSpaceRaceYT]

Glad you enjoyed it!

[@davout5775]

SpaceX wants to make the N-1 only bigger, far more powerful and with the ability to return. But so far, they went a lot further than N-1 ever did. I really hope that they can make it

[@nicholashenning9034]

You got your voice back

[@kennylandro5350]

Good video, welcome back ❤

[@jesusbermudez1764]

The key to super-high pressure is the CLOSED system in which a portion of the high pressure combustion product goes back to drive the booster pumps. Not an open system. This technology came from the abandoned USSR rocket engines that Ellon used.

[@bazoo513]

16:40 - The starship cannot "connect the solar system", when it needs dozens of (yet to be demonstrated) refuelings to even reach the Moon. Raptor is a great engine. However: - It is still woefully unreliable; improving its reliability will be a monumental challenge. - The design goal was, of course, not to design "the most complex engine", but the one with the greatest specific impulse, as small and light as possible. It was only possible through this complex cycle. -This is not the first time that full flow staged combustion cycle was tried (but it is the first such engine that actually flew.) - Other people use methane; there are at least two other methalox engines that already successfully launched actual payload into orbit - Making a video on SpaceX engine development and not even mentioning Tom Mueller is absurd.

[@SpaceAdvocate]

Raptor reliability seems great. As far as we know, it's been perfect for IFT-2 and IFT-3. There have been some failed engine relights, but it seems unrelated to the engines themselves, rather being the result of sloshing, ullage collapse, blockages in the propellant supply or the like. And maximizing specific impulse clearly wasn't the primary goal. They've been increaseing the throat diameter for new versions, increasing thrust but reducing specific impulse. I think their objective was something along the lines of: - Make an engine that is as cheap as possible per ton of thrust, while being reusable without a need for refurbishment, and only requiring propellants/consumables that are readily available on Mars. The goal can be tweaked a bit more, but it pretty much results in the Raptor engine. You want methalox, autogeneous pressurization and torch igniters for Mars. You want full flow staged combustion for ease of reuse and a high amount of thrust relative to dry mass/cost.

[@bazoo513]

@@SpaceAdvocate Well, I do hope that those failed relights have nothing to do with the engine itself...

[@MyEthan1998]

We feel the same way as we did when the Wright brothers created the first air plane. Difference now is that we know the impossible can be done when we try hard enough.

[@71degrees]

They aren't crazy ideas. They are just ideas. But, most humans don't have the backbone to follow thier dreams, they play it "safe" (whatever safe is)

[@ballerdoc]

I actually find the guy's voice quite similar to yours . Taking some time off might be beneficial; people often respond negatively to change, so it's important to allow things to settle. The speaker just needs to refine his delivery a bit more to sound less ai-ish.

[@TheSpaceRaceYT]

We sound very similar in real life. We might have a little something coming soon where you can see both of us together on camera... Stay tuned

[@RedRyan]

​@@TheSpaceRaceYTthat would be super awesome! I love seeing people on camera even when it's scarcely

[@amanichristopher719]

​@@TheSpaceRaceYTwe need to see you on camera. Big fans

[@karthikumarsambasivam8191]

At 03:00 the animation puts LOX and RP1 at the same time of arrival at the chamber, which will most likely end up with a detonation. LOX has to lead and RP1 comes a few milliseconds later. Incredible video though

[@aggonzalezdc]

It was later, but you didn't notice the 30 milliseconds.

[@karthikumarsambasivam8191]

@@aggonzalezdc thanks. I got it later. I correct my mistake. if it's okay, I would still leave the comment for people to understand what happens when this happens, so they at least find out the kro-lox hardstart before actually hardstarting a kero-lox engine like me. haha

[@davejoseph5615]

Yeah, let's build everything like this 12:21 so we can have lots of explosions just like a Michael Bay movie.

[@dosmastrify]

4:00 but based on what you just said, we should want the biggest nozzle possible even if that causes separation from the walls

[@edwardturner1282]

This was so beautifully explained. It felt good to be able to follow along and understand most of it. Well done. Kudos to the entire production team. I am subscribed and will visit DISPLATE. Magnetic wall mounts... pure genius.

[@maxheadrom3088]

Next week: how Americans reinvented the ball and created a game played using the hands and named it "football"!

[@MitzvosGolem1]

Russia used closed cycle rocket motors captured Fuel pump exhaust energy long ago in 1970s.

[@aurtisanminer2827]

“Simple and cheap”. Sure sounds fitting!

[@muuubiee]

I don't think your explanation is correct. The pre-burners drives the turbo-pumps by cumbusting some fuel, yes, and the exhaust of the pre-burners is gas that enters the main chamber somewhere... But most of the fuel is still being pumped around the nozzle bell and into the main combustion chamber as liquids, not as a gas. The pre-burners will not be sending their exhausts through the same system as the main burner, the fuel rich likely going closer to the combustion chamber walls, and the oxygen rich more centered.

[@TheSpaceRaceYT]

You're correct. Then we would have had to also explain the cooling system for the nozzle and the fuel injection system and the video is already on the long side for us. We like to think it's more about the concept than the actual technical details. It's always a tough call, but we'll sometimes sacrifice a bit of accuracy in favour of accessibility.

[@mrsimo7144]

Thanks for this. Much appreciated.

[@wolpumba4099]

*SpaceX's Raptor Engine: A Rocket Engine Reinvented* *Here's a summary of the video's key points about the Raptor engine, including starting timestamps:* * *[**0:02**] From Merlin to Raptor:* SpaceX began with the Merlin engine, designed for simplicity and cost-effectiveness. It was crucial for early successes, but needed to evolve. * *[**7:07**] Raptor's fuel: Methane* - A switch from kerosene to methane offers advantages: * Clean burning, leaving no residue. * Enables high reusability for Starship. * *[**9:03**] Raptor's cycle: Full Flow Staged Combustion* * Extremely complex but highly efficient. * Dual gas turbines compared to single turbines in previous engines. * Closed cycle, using all the pressure from gas generators. * Full flow, with both fuel and oxygen passing through pre-burners before the combustion chamber. * *[**12:36**] Raptor's performance:* * Delivers 230 metric tons of thrust at sea level. * Has an unmatched power-to-weight ratio. * Achieves high chamber pressure (300 bar). * *[**14:22**] Future of Raptor:* * Simplification and cost reduction through component integration and removing unnecessary parts. * Mass production for Starship's ambitious goals. * *[**15:53**] Starship's impact:* * Aims to become as commonplace as jetliners. * Will be used for travel between Earth and Mars, Earth and the Moon, and even point-to-point transportation on Earth. * Could be one of the most important vehicles ever created in human history. *The video emphasizes SpaceX's innovative approach to rocket engine design, pushing the boundaries of what's possible.* i used gemini 1.5 flash and pro to summarize the transcript

[@yougeo]

Good shirt excellent video with plenty of detail. Best one I have seen on the raptor engine.

[@marcelomendonca2540]

Wait a moment. You've said that Raptor engines require external stuff on the launch pad to get started. However SpaceX has turned Starship booster engines off and on again on the fly by them own. How is that possible?

[@martin830319]

Only the outer 20 engines started by stage zero. The rest uses on board high pressure helium to start.

[@TheSpaceRaceYT]

That's a good point. There's never enough time to cover all of the technicalities - the booster engines get a spin start from the launch mount, the engine relights and upper stage Raptors are spun up by pressurized gas.

[@aggonzalezdc]

Yea any of the reused engines have an onboard system for spin priming. But the ones that don't need to relight? Might as well leave it on the ground. Clever.

[@clavo3352]

Grateful for this video! TY !!😊

[@russellhays4982]

great simple breakdown and nice video

[@CyberSamurai4Life]

Well done. One small comment. Use of the term fuel would be better served with the term propellant

[@TheSpaceRaceYT]

propellant is very difficult to say lol

[@EightiesTV]

"Fuel" and "propellant" are not interchangeable terms. Propellant consists of mixed fuel and oxidizer. Common in solid fueled rockets. Doesn't exist very long in liquid fueled rocketry because it's burned immediately after mixing.

[@CyberSamurai4Life]

@@EightiesTVcorrect. Which why I made the suggestion.

[@chicomalo3654]

i can connect you to the universe without burning anything -LSD

[@Nerdmom1701]

Great to hear your voice again!😂 👍🏻🙏🏻❤️

[@ophthojooeileyecirclehisha4917]

thank you

[@adamgrundy4327]

the amazing part is the raptor 3 which is still in testing and not on starship yet has reached up to 350bar. its amazing how much they are improving it and at an incredible speed.

[@jamestregler1584]

Thanks this explains the new rocket's inner workings ; from old New Orleans 😇🇫🇷

[@DansHobbies]

easily the best explanation i have seen.

[@Ryan-lk4pu]

Good video. Another reason they chose methane is because you can produce it from the Martian atmosphere (if you have a water source).

[@markbrown8097]

Good luck with the water source

[@Ryan-lk4pu]

@@markbrown8097 I think Mars has a lot water ice. With tentative signs that it's even buried near the equator :)

[@mikefiell8103]

Excellent video! Recommended watch!

[@uchechukwuekemezie]

Thank God!! The voice is back😊

[@plumbr13]

At 2:35 there's an error in the subtitles. They say the boiling point of oxygen is 83 degrees, not negative 183 degrees.

[@averyjeromekelly5735]

Keep up the good deal and the way ;!

[@kenxiong6830]

Great video. Awesome breakdown

[@user-gp6iq5qe1o]

Yay! Favorite narrator is back!

[@mtstachowiak]

The voice is back, awesome :)

[@PhilfreezeCH]

13:15 including the engine bell in the size comparison is a super weird move. The RS-25 also operates in space and just needs a larger engine bell than the first-stage Raptors. The second stage Raptors are also bigger.

[@mtb5778]

excellent video and an advert that I am interested in.

[@44JohnDoe]

Great stuff, as always

[@martinlastname8548]

Great video dude

[@AmericanCrusader222]

Now we gotta do one on the new EVA suit!!

[@pauljcampbell2997]

Great video!

[@StephenMattison66]

Great video, well done, ty!

[@AugustusLarch]

One detail wrong on the LOX. Gas oxygen is put under pressure until it liquefies. Not cooled until it turns into a liquid.

[@nickmiladinovic500]

Thank god the narrator is back

[@ScatterlingOfA]

Well done!!

[@keithsweat7513]

This is a good video, only thing, the full flow diagram could be simplified by not having that counter intuitive X configuration in the middle of the GG's for easier following of the fuel and oxidizer paths

[@jameswoll]

Good one, dude!

[@apachetamizha]

Marvelous engineering 😊

[@cthjob1704]

as per bernoulli principle velocity is increased not pressure in the throttle

[@wxb200]

The Raptor Engine. I want one...

[@mgman6851]

Great video. Thanks. Can u provide more detail in the raptor design in another video please ?

[@marpintado]

The Russian engineers invented this system but Space X doubled the concept!!!

[@peterfireflylund]

Huh?

[@oakbellUK]

Question: Do I remember correctly that this pre-burn, which results in gases, rather than liquids, entering the combustion chamber was invented by the Soviets? Did/do the Soyuz engines have preburn (or equivalent gasification)?

[@j3i2i2yl7]

I believe the Russian NK-33 and RD-180 used closed systems. NK-33s were designed in the 1960s.

[@a_thing_overtheneck6263]

RD-172 of sealaunch also..

[@chrisb.travelin544]

Once again, outstanding content. Please keep it up. Others who post daily have a LOT of repeat "click bate". Cheers.

[@ThomasButryn]

Great show!!

[@law195]

Starting at 3:00, it goes to say the exhaust gases increase in speed as they go from the throat into the expansion nozzle. Other fluids slow down as the path expands. What part of rocket science am I missing here ?

[@aienthusiast618]

lets go the normal guy is back the lord is great

[@MattH-wg7ou]

FULL FLOW STAGED COMBUSTION!!!

[@Carstuff111]

I personally can not stand how Tesla is run, and I was not impressed with SpaceX initially. However, watching them reliably land their rockets and reusing them has been beyond epic! I just hope that they can get Starship to be even more reliable, since we are planning to send people to space on them.

[@En1Gm4A]

Awesome video

[@Roguescienceguy]

Raptor has under delivered so far. Even at plus 300 psi it performed significantly less than what it was supposed to. Also it's definitely not a re-invention. It's a combination of predominantly Russian rockettechnology and advances in metallurgy. Imho the simplest engine on the market these days is the one from rocketlab and proven to run after dipping in saltwater

[@RiadAhmed-ce6qo]

Because it is a modular based cluster cell design . So even engine failed you can keep it operational by isolating damaged cells. in this case power out put will be reduced but by the percentage you can figure out list how many motors can provide you enough thrust to keep you safe during a malfunction. Star-link in future will orbit the moon as well. What is possible moon and the earth a satellite link chain like bicycle's chain which will continue and this link will provide communication and a trailing guide for moon ferry so people can go to the moon ,orbiting and back. which is the first steps of Star Track.

[@JP-xt6hl]

Nice video!