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Thank you for all you do. I am 81 years old and live near Boca Chica. I love all of this. Don't understand a lot but have learned a lot also. Keep the info coming.

This is why, when I lived in Waco, Texas for 20 years, the entire city shook sometimes, with a low roar in the distance. If it was night, it looked like the sun was rising in the distance. They were testing the Raptor engine at the Space X facility in Mc Gregor, just outside of Waco.

One more very important thing why SpaceX developed the Raptor: They needed a high-performance methane-burning enginge, because it's possible to produce methane on mars using in-situ resource utilization, and refilling Starship there to have a return vessel. After all, Starship's real mission is the mars, and everything around that rocket is optimized for that mission.

@2:07 Liquid oxygen is not used for every rocket. Other oxidizers include: nitrogen tetraoxide, fuming nitric acid, nitrous oxide, or even fluorine.

Honestly, I’ve watched almost all of the Everyday Astronaut videos, and this is the first time I actually feel like I have a general understanding of the systems. The way you explain things I so straight forward and understandable. You made something complex sound simple. I think you have a serious talent for this. I’m impressed. Thank you!

Super enjoyed this one, thanks :) The clear, concise, well paced explanation didn't hurt my brain. Still had to re-wind & re-watch a few segments for comprehension & retention so awesome job...you learned me good!!! ')

Great to hear technical people who prioritize simplification! More fiddly bits translate to more problems.

Good smooth presentation. I can remember the US Navy Vanguard blowing up on the pad. My dad made parts for Explorer one launched by the Army on a Jupiter-C Rocket. That was on Jan. 31, 1958.

I was allowed to stay up to listen to the first moon landing. With all my space books and artistic impressions of what the future held it was a dreamy and exciting time for a child of the 60's and 70's. And then nothing very futuristic happened for so long. I might not be around for the colonization of mars but things are exciting again, Space X and Tesla like a long awaited sequel to a great book. It's brilliant to be dreaming again and have a channel like The Tesla Space that shares and gives insight and understanding to this new era of human advancement. Just like Elon doesn't believe in unnecessary complexity with manufacturing this channel is sharing an understanding to everyone according to a philosophy of inclusiveness.

Minor correction around 10:20 -- Elon said they were able to remove the torch igniters. He did NOT say that the fuel and oxidizer would autocombust. (That's the domain of hypergolic fuel mixtures, which methalox is not.) Among those details which Elon would not discuss is some other undisclosed mechanism of causing ignition. Big props for using so many _clearly attributed_ Everyday Astronaut clips, too! Too many KZfaqrs bury credits like that in the description, if they bother to include it at all.

The best teachers have your skill. Breakdown the complex into understandable pieces, then complete the jigsaw. Thank you, your turn learning from a boring chore into an exciting adventure. I'm hooked.

I learned a lot, which is GREAT. I knew the engines were complex, but had no idea how oxygen and fuel were mixed before igniting. Thanks for taking the time to share.

Gotta say, reminds me a bit of the development of the German rockets and the fuel issues they had. What I find similar is that there is a simplicity involved. These engines are "basic" but that does not make them easy to engineer.

Amazing, extraordinary work. I look forward to every episode especially about RAPTOR!

Funny how much you think you know until someone takes the time to break it down a little more and then focus on the smaller topics one by one. Excellent stuff. Subscribed.

Really love the approach with explaining complex things. Also thanks for the attributions to other creators' works.

It seems like it would have been a good idea to have done an engine swap on the falcon 9 if only to have been flight testing the Raptor engines, I know that it may have taken time away from the Starship but it could have been a different kind of Falcon Heavy without the two extra boosters. I also know that the starship will be replacing just about everything when it starts flying.

Another clear explanation of the full-flow engine. Appreciate learning rocket science from you.

Thank you! You explanation for me was spot on. Your flow and pace was perfect for me and I was able to keep up and understand. So well done.

I enjoyed the video. Can you cover something related to how the engines are connected to the structure and how the nozzles are synced and interconnected for directional use?

Not beyond unprecedented. N1 first stage had 30, which I think were also closed cycle engines.

What's most impressive is that the CEO himself gets in there and explains the technical details. I'm sure he does not know how to actually design the engines, but can explain their operation. His "keep it simple" mantra reminds me of an early American inventor, "Madman Muntz." Muntz was a self-taught electrical engineer who would visit his engineer's labs with a pair of side cutters in hand. He would cut one component at a time out of the system until it finally failed to operate. At that point, he said "put that last part back and then ship it." They called it "Muntzing." Elon's desire to simplify, simplify, simplify is a modern day version of Muntzing!

Good simplifications! Well done. I can use this with STEM students.

The HEAVY is so massive. I remember as a child how massive the moon rocket was. The heavy is many times that size. So in a few decades I hope to be alive to personally observe the incredible size of this rocket in a spaceX museum in Florida some day.

Raptor 2 save 1 ton weight per engine then makes 1/2 as much again in thrust. Which has to bd worth another 1/2 ton of weight. Fit 32 of them against 48 Shuttle engines and you’ll save about - erm - at least 50 tones of dead weight. That’s at least 50 tons more cargo you can carry for the same fuel burn.

I wish I could get Elon's mind ticking over this potential improvement in the heat shield tiles, we have all seen some fall off the ships when being moved around without firing up a single Raptor, I hate to think how many will fail. I've been studying the structure of scales on fish, particularly Salmon in their fight to swim against the current, the overlap of the scales is key to this proposal. They have one anchor point, a Titanium bolt would help maintain the scales and reduce the additional weight of the scales when overlapped, these anchors can be reused again and again. If one scale shaped tile separates the tiles underneath will maintain the integrity of the shield, might as well try new ideas to improve the shield before a manned encounter with massive windshear at speed in Earth's atmosphere or entering Mars thin but still violent gas. I sincerely hope the current arrangement can withstand re-entry, but I am sure your team are concerned when the first automated flight destined to return to Boca Chica, the first to be inspected at Mechazilla we hope.

I wish I was a young engineer again. I began my engineering degree in 1970 and want to be a rocket engineer. I was building my own rocket engines and rockets in the late 60's and I so much wanted to be part of the moon space program. Really happy someone is back into doing space to other planets with people again.

SpaceX's research and development capabilities is super impressive. When a company hires the most capable people it can and prioritizes efficiency and progress, this is the result.

What cracks me up about Elon Musk is every boy at some stage wanted to be an Astronaut. Elon Musk actually created his own Rocket Company?! I mean WTF who does that?! Total Boss Move....

Good breakdown. Full-reusability for the first few rounds of Mars-bound Starships is unnecessary -- they ain't coming back -- but absolutely essential for generating the funding for those ships (Earth-bound Starlink and commercial launches).

Thanks for your video which contributes a lot for understanding how a rocket engine works.

Pretty exciting stuff I can’t wait to see it come to life!

One of the biggest benefits of reducing complexity is increasing reliability.

The concentration of engines is not unprecedented, the soviet N-1 moon rocket had 30 on the first stage.

I'm so fascinated!!!! Awesome Documentary.

I am 76 and stay in a state of fascination and confusion….all I can think of is WOW!!!

I have visions of the Soviet N1 rocket (always blew up) which had 30 engines on first stage. Hope Elon gets it to work, but if have that many engines and if each engine has even 1% chance of catastrophic failure then you have 33% chance of flaming data per first stage launch for Starship...I suspect he is working mostly on reliability at this point.

Why is this video on The Tesla Space rather than The Space Race?

Way beyond Aerojet General Rocket Motors. SpaceX has taken it to the next level.

Excellent explanation of a very complicated subject. Amazing Elon/SpaceX design !!!

Thanks for the clear, understandable descriptions. Please make another video on the cooling system.

1:15 it says everday astronaut, not everyday astronaut

What an Amazing Video !! You obviously did so much research so you could add so much info to this Video for those of us who love the Rocket Industry but know very little about it. You did an Amazing job with this. Stay safe. Cheers ! 😎

Amazing! Thinking outside the box, not always following what has gone before.

Spectacular presentation. Truly fantastic. You make things more understandable than I thought was possible. Outstanding job. Excellent pacing on your speech. Very easy to follow. Solid A+

0:45 the soviet N1 rocket had 30 engines, it is actually a fairly similar design... Let's get facts straight

Great lecture and information ! Thank you !

Wow. Fantastic video. Really easy to understand a d great graphics. Love it. Thank You.

Excellent presentation, keep moving forward, allow for the negativity. It's just the level of human beingness at this time.

pre burners have been used in many diesels for years. having 39 engines is scary. Increases the probabilities of failure.

One of the greatest video from you. Super valuable content. it's pleasure to see the video. Appreciated.

This is well and good for the engine however a blown engine or one that explodes does little if the payload is damaged, regardless if they have another ready to go. A scientific payload is usually made as a one off, if it's research as rarely the money allotted for duplicates. Not downing the research (remarkable as it is) ,but would like to see the cost per weight ratio of payload. As this directly impacts payload development as well.

Excellent excellent video. Just the right level of technical detail at the right time. I do have a question about the shroud that Elon wants to remove. Can you do a video discussing where it is, what it looks like and benefits of removing it?

Maybe great for a lot of people who were not following the development Couple more questions would be great to cover, mainly how is raptor restarted for landing?

Well researched video especially considering its outside your usual niche

It'll be cool to finally see this Raptor fly.

I noticed that in a test yesterday while only using 14 booster engines that there was serious damage to the concrete launch pad. How are you going to deal with that problem when you go to 33 booster engines?

What I'd really like to know is how the orbital launch platform stands the heat of a Starship launch without melting.

The real mvp is the dude taking incredibly interesting, incredibly complex, topics and simplifying them to a level that even a simpleton like me can understand…. Almost understand :)

Bravo. Excellent presentation.

Excellent presentation! Even I managed to follow your explanation ;) Hope you will do some follow ups, too!

The only man i respect in the entrepreneurship space is Elon musk. To a lot he is a maniac but to me he is my hero. In one of his interviews he mentioned about mining Doge coin done by people like Teresa Janette Brock I recognized that mining is one of the methods used by the wealthy to increase their wealth. In only 6 weeks, I've already made a fortune. You may either establish your own mining farm or mine on a cloud network. With this era's transformation, there is a lot to profit from.

It's kinda funny how in the diagram they use to show the engine's mechanics they show like the 2 or 3 basic paths of the fuel and oxygen etc., YET when they show a picture of the actual Raptor engine you can't help but notice there's more tubes and pipes and valves and chambers and extraneous apparatus than you've ever seen on any one thing anywhere else in the universe. 😮

WOW! AWESOME! What a clear explanation!😀

How about a courtesy link to Everyday Astronaut since you're freebooting so much of his info and graphics?

Love to hear more about the turbo pumps...like how is it possible to generate so much pressure from a single stage its a fascinating video....thanks

Very interesting and easy to understand information that I thank you for sharing with us in such an entertaining way 😀

This is so good, I need to watch it again.

This is not the first full flow engine. There have been other attempts. They are the first to move it to production

Not even a thank you to Tim Dodd, Everyday Astronaut? Half this video is hosted from him. That’s not cool.

so well explained, thankyou,Rod

The Starship could teleport around the universe with hyperdrives like the Millennium Falcon (see attached CGI rendering), and THAT makes it quite possible the most incredible thing ever ever everrrrr invented!!

Very good 'article'! You kept it at an understandable level, which is nice for we older 'science nerds'. Next time continue on with the cooling aspects... it would not be too much. :-) (I grew up in eyeshot of 'Canaveral', and all my classmates and I were recessed outside to watch John Glenn go up. I became enthralled that day, but I ended up following another path. My Dad worked for a subcorp of Rand, and was the project supervisor for more than one... government project. Those were the glory days of the 'space race'. He would be like a kid in a candy shop these days, his fingers twitching to do a close inspection all in appropriate garb for the 'white room'. Thanks again!

I live just a few miles from Space X here in Central Texas. When they fire the engines, woha! Pure raw power. Every once in awhile one will fail and explode. It really gets your attention. I find the Genius of Mr. Musk fascinating. I lived in Huntsville Ala. when they were building the Space Shuttles and dealt with a few of the companies supplying parts and components of the shuttles. I would love to be able to tour Space X much like I did in Huntsville many times. I am a metallurgist and I'm like a kid in a candy store around these technologies. KnifeMaker

Thankyouthankyou This really helped me understand a number of aspects of his strategies

Great job! Easy to understand video!

That's what makes Elon great he's not afraid to let us see him fail. But he also delivers on what he says.

Great explaination ! 🖖

Great video! You might've just gotten 50k more people into following this work.

I've said it over and over again,,,, We need a Space Port .... Leaving these ships in space would improve the life span. Taking off from earth shakes the grap out of a ship. It put enormous G forces on the ship and reduces the life span. Also every time you take off and land, your using tons and tons of fuel to do that.. If you leave them at a Space Port, load them with fuel and equipment in space you'll will decrease there turn around time from landing on earth and taking off again. Faster, cheaper, much much more efficient. No ones listening!! what's the point of a comment area if no one reads the comments???????????????? I'm wasting my time

These are exciting times. We still have inventors and explorers among us.

Simply put -> Great!

Thank you for the layman’s description of how a rocket engine works. I am anxious to see the the Starship fly. Thank you Elon.

Perfection is achieved not when there is nothing left to add, but nothing left to remove.

Thanks for creating and sharing this cogent content. Maye the force

Outstanding video. Well done and keep up the good work

12:00 wow the Thurst more than F-35 fighter jet

I understand you want to keep the explanation as simple as possible but, it would've been useful and helpful to mention Bernoulli's Principle earlier in the video 🤓☮

great presentation. thanks!

0:50 Calling 33 engines "unprecedented" forgets that the N-1 had 30 engines, and is therefore an incremental addition.

Awesome video. Thank you.

Awesome detailed explanation 👌

I think you are going to need an ignition option if either you want to re-ignite the engines in case of a blow out

The Russians made the first operational closed cycle engine it was the NK-15 designed by Nikolay Kuznetsov. The latest one used in many rockets also in in USA.

Excellent presentation of incredible content. There is not even one negative comment on this video.

Great video. Informative. Thanks for sharing.

Interesting point is that rocket thrust is not a force that pushes against anything such as a launch pad. The rocket moves due to mass displacement - Newton's Third Law. The hot gases being ejected out of the engines do not have to push against anything of course as they would work in the vacuum of space. The new Raptor engine moves more mass for a given time unit from inside the rocket to the outside than previous engines, so it provides more force to move the rocket and its payload.

1:25 "Hi its me Tim Dodd the *Everday* Astronaut."

just to clarify...i don't think we use methane in our stove tops...i think we use butane