Rocket engine cycles: How do you power a rocket engine?

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Rocket engines are incredibly complex machines, pushing the boundaries of material science and human ingenuity. And there’s a wide range of ways you can actually power a rocket engine and make it work.
They can be super simple, like just opening the valves of a tank under high pressure to having complex pumps arranged in a fashion so confusing it’s a miracle anyone ever figured out how to build them in the first place.
So today we’re going to talk about cold gas, pressure fed, electric pump fed, open cycle, closed cycle, full flow staged combustion, tap off and expander cycles. We’ll go over their pros and cons and lots of fun examples of each one!
Check out our article version of this video too for sources and links! - everydayastronaut.com/rocket-...
00:00 - Intro
02:55 - Basics Of Rocket Engines
05:35 - Cold Gas Thrusters
10:25 - Monopropellant Pressure Fed
14:15 - Bipropellant Pressure Fed
17:45 - Electric Pump Fed
21:05 - Open Cycle
25:40 - Closed Cycle [Ox Rich]
31:15 - Closed Cycle [Fuel Rich]
35:25 - Full Flow Staged Combustion
44:25 - Tap-Off Cycle
46:45 - Expander Cycle
52:20 - Summary
--------------------------
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Or become a RU-vid member for some bonus perks as well! - ru-vid.com/show-UC6uK...
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31 май 2024

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Комментарии : 1,9 тыс.

@ardag1439 2 года назад

I think we forgot about the cycle where you rupture the propellant tanks and use the whole vehicle and its surroundings as the combustion chamber.

@ryanthompson7884 2 года назад

clearly the best

@saadusmani78 2 года назад

From what I heard, this type of cycle is called RUD (Rapid Unscheduled Disassembly) Starship SN10 used this to make a reflight in under 10 minutes after landing! Now that's an impressive turnaround time.

@ArodWinterbornSteed 2 года назад

I don't think you understand the concept of a 'chamber'

@ShuttleEnjoyer 2 года назад

The full flow “KSP” cycle

@letsgocamping88 2 года назад

what about the one where you throw bits of engine out the back?

@sockpuppety 2 года назад

honestly your content is beginning to feel more and more like curriculum as it gets fleshed out and cross referenced. very few people would have the stones to go into as much detail as you have done. thank you for caring about getting it right. you are a researcher and presenter of quality sir.

@itzzitzz 2 года назад

I thinks he's teaching actual rocket engineers

@ASJC27 2 года назад

@@itzzitzz No

@SoumilSahu 2 года назад

@@itzzitzz Nope, it's amazing content, but it's mostly surface level. It's just right to get you excited to delve deeper if you want, but its not gonna help you make a rocket engine. Like he claims, the purpose of Tim's channel is to bring space down to earth for everyday people..

@PracticalEngineeringChannel 2 года назад

Masterclass in breaking down a complicated topic. Great job to you and your team!

@logank444 2 года назад

Hey my favorite engineer commenting on my favorite rocket scientist. How sexy

@samkachar 2 года назад

So great seeing you here. Love your content as well. Not surprised to see current and future engineers here.

@jeffreyhill1011 2 года назад

Number 1 dirt content creator on the interwebs!

@fish2468 2 года назад

@@logank444 my thought too pure hundred percent *S3XY*

@oldjimlxi5586 2 года назад

@@samkachar ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

@KevinTheCaravanner 2 года назад

We use “rocket science” as a term to indicate something is extremely complex. And it is, but you present it so well that I understand it. You’re a legend Tim.

@Muuip 2 года назад

Exactly! I totally agree!👍 Thanks to Professor Tim and team.👍

@warrengans1346 2 года назад

This is only one part of it: staging, orbital mechanics...

@KALLEFUCKINGANKA 2 года назад

Rocket science is really simple, throw hot stuff out really fast in one direction and go the other. Rocket ENGINEERING however, now thats complex!

@Titter2 Год назад

I understand just enough to know why I don't understand it...and that's all I can ask for.

@VeggiePower303 Год назад

Rocket science is NOT complicated. As you can see it's all very simple. If you look into the operations of a Modern Super-Turboed Diesel engine in depth. You will see it has more moving parts hence it is more complicated.

@f205v 2 года назад

Tim, the nerdier you get on mathematics and physics, the more enjoyable your videos are!

@jamesengland7461 2 года назад

A "like" is a given; a comment is grossly inadequate to convey my gratitude for the stellar work you do!

@roelende9670 2 года назад

same

@koomaj 2 года назад

I'm still amazed this level of content is totally free for everyone to watch. Thank you Professor Tim!

@Lpabmendez 2 года назад

Free? I had to sit through several advertisements

@koomaj 2 года назад

@@Lpabmendez Wathcing advertisements is also free, unless you was convinced to buy something =)

@screenname1 2 года назад

I suspect that it's funded.

@spacecowboy5274 2 года назад

i have a question 8:50 over here how will the gas turn into a liquid??

@MasterMe1984 2 года назад

@@spacecowboy5274 I think if the gas is losing pressure it's loosing heat, so it turns back to a liquid.

@jasoncy31 2 года назад

I'm overwhelmed at how good this was, Tim. At first I thought "well, this is obviously a setup for a paid curriculum/class". Can't believe that you offer this for free to the world. You're doing an important service to space and science education and should be proud of what you've accomplished. Well done, sir.

@TechNextLetsGo 2 года назад

I learned more about rocket science in the last 30 minutes than I have in 5 years, wow dude. You are good at teaching this.

@DonDegow 2 года назад

This video helped me a lot, gradually increasing the complexity is what made me understand, thank you!

@snuffeldjuret 2 года назад

indeed very well put together!

@acanuck1679 2 года назад

This, Tim Dodd, was a tour-du-force. Your attention to detail and the effort you put into ensuring that we (your loyal audience) actually understand what you are trying to explain to us was obvious. This video was a really good primer about rocket engines and the diverse choices that engineers and designers can make when trying to "build a better mouse trap". Thank you.

@yagwaw 2 года назад

Absolutely magnificent! I thought I already had a pretty good idea of cycle types, but still learned a lot. Each time a question arose in my head, you did immediately address it in the next sentence or so.

@websitemartian Месяц назад

could you explain the difference between the rocket engines used on planes/jets versus these? and why wouldn't raptor be used for jets ?

@robertgraham6481 2 года назад

This is a masterpiece. Structure, flow, pacing, diagrams, animations, clips all spot on. Thank you very much.

@screenname1 2 года назад

You react with such enthusiasm because you think it's a solo effort.

@flybeep1661 Год назад

Lol, "masterpiece", dude get a handle on yourself. Exagerated BS, it's a nice vid, nothing more.

@The_Dark_Lord-69 2 года назад

I like how you took us from a simple party balloon to Raptor 2 engine. Thank you very much. No lecture would be able to understand those basic concepts as fast as you did.

@zuthalsoraniz6764 2 года назад

16:00 There were some other (never flown) rocket designs that planned to reach orbit with just pressure-fed engines, like the German company OTRAG's design of a cluster of a huge number of mass-produced cheap rocket modules, and the Sea Dragon that planned to get past the mass ratio issues of being pressure fed with simple brute force of being absolutely huge.

@UNSCPILOT 2 года назад

Love the Seadragon design, such a monster of a rocket made of steel and brute force, it's a shame it never got a chance.

@tarunantony1866 Год назад

Otrag would have had such complicated aerodynamics

@TheDerpsKast 2 года назад

I've been following you for years Tim. Since before Boca Chica, and even since before Starhopper took it's first hop. I'm consistently amazed by not only the understanding you've garnered regarding these incredibly complex topics, but the simplicity with which you explain them. I've always loved space and spaceflight, but you were the catalyst for much of my understanding of its nuance. For that, I cannot thank you enough.

@FureyinHD 2 года назад

I'm an aircraft engineer and I've learnt so much from you about rockets. You're like an old fashioned engineering teacher who's not afraid to challenge students with depth information. Thanks, Tim!

@martinstedtler 2 года назад

Can you make a video about the structural engineering of rockets? I am always amazed how they transmit hundreds or even thousands of tons of thrust into the chassis, without everything just getting crushed^^

@Paragon643 2 года назад

The way they manage to do that is basically just pressure. Just like how you can stand on a closed full soda can without a problem but when it's empty and doesn't have pressure inside it will crumble under the load. If you have a thin wall tube that you put under a load it will want to move and deform. But if you cap it off and put some pressure into it, the pressure inside will will push against the tube walls and spread out the load across the whole thing and actively fight against it changing shape since that would require the gass to compress even further. I't like how the more you blow up a balloon the harder the outside of the balloon feels.

@rileyjordan9072 2 года назад

agreed. more to rockets than engines

@allanshookphoto 2 года назад

Yes, I have asked for this topic before. The mechanical engineering doesn't get nearly as much attention as the chemistry. All that expanding gas pushing on the diverging surfaces of the nozzle, and the injector plate, and then up through the... um, how does it all not blow itself apart and crush itself? The entire weight of the vehicle balancing on the tiny surfaces of the thrust bearings! The mechanical engineering is insane.

@theOrionsarms 2 года назад

It's all about the choosing the right shapes (and materials too) , for example a cylinder is very strong for axial forces, and a nozzle bell have the same shape and strength as a cathedral dome.

@saadusmani78 2 года назад

@@Paragon643 This could probably make for a short, but this definiely cannot be a full video

@danielhermanus6909 2 года назад

I LOVE how this video works from the bottom up - from just opening a valve, where the recoil pushes back (which everybody knows and understands) to what if you do X Y and/or Z to improve. This is literally how engine development advanced, so it makes sense to teach it this way.

@Tech_Planet 2 года назад

Excellent video about different types of rocket engines!

@Oatmilk123 2 года назад

Hey Tim, recently my team and I placed top 3 in a national aerospace highschool competition called StellarXplorers. I think it’s partly because of you that we succeeded with your immensely informational content. Keep up the great work! :)

@idleeric8556 2 года назад

👍🚀😎

@sergeyanikin8326 2 года назад

Amazing, definitely your best video to date! Can't believe it was almost an hour. Thanks to all people involved in producing and reviewing the content for the hard work that made it so easy to watch, understand and enoy!

@zavevu 2 года назад

The only problem is what will happen after the videos will reach perfection. They are definitely very very close. Let's see what Tim does then.

@michaelbotros5814 19 дней назад

This channel is honestly the most valuable thing in the entire internet

@ThatGameGuyy 2 года назад

wow. just wow. As an aerospace student I can attest to the succinctness and grace through which you've distilled weeks worth of my laboring over textbooks into a single, engaging, digestible, hour. I recently had an art history major friend school me on soviet rocket history.. ART HISTORY MAJOR. You truly are bringing space down to earth for everyday people. Thanks Tim, your impact will be profound.

@brunoyuitinascimento3239 2 года назад

As a aerospace engineering student I'm happy to see many of this videos, they help a lot to study some subjects. Thanks 💚💚

@frosty-5727 2 года назад

Br? Faz em que facul?

@brunoyuitinascimento3239 2 года назад

@@frosty-5727 ufabc

@kellyfarrell1646 2 года назад

The production quality on this channel is amazing! I think one day we will have variable expansion ratio combustion chambers and this will solve many issues like throttle ability, although of course, it’s anyone’s guess how material science and technology will evolve. Nevertheless this channel always sparks my creative mind and I appreciate the content.

@timster5 2 года назад

I know we don't get videos quite as often these days, but it's pretty obvious why. This is clearly years of research and knowledge condensed into less than an hour and I just want to say thank you for that. Thank you too your editors for the excellent animations and graphics. And although I'm not a channel member, I want to say thank you to everybody that can support you monetarily. Tim you're an absolute legend.

@dzjad 2 года назад

My kids (9 and 11) loved this. We had a great time pausing and talking it through.

@maximilianseifert5486 2 года назад

This is such an amazing video. Thanks for all the hard work that you do Tim. Can't wait for the next Starbase tour!

@mrboredj 2 года назад

This is the first video which really gave me an intuitive feel for how the different cycles work, rather than just kinda understanding it academically. Really awesome.

@JayAntoney 2 года назад

Quite seriously - I have no idea how you do these videos. They are by far the easiest to understand and most information packed videos I watch. Hats off to you dude

@rorygudka2474 2 года назад

This is my new favorite video! The level of detail was exactly what I was looking for to understand the different engine types, and the graphics were amazing at helping visualize it all. Thanks for the incredible work!

@GeorgeCrawley 2 года назад

Tim, just imagine if Elon sent you up to the ISS on an Axiom mission with a film crew. Picture the sense of adventure you would bring to all of us sitting in our living rooms throughout the entire training and mission, every nuance and appreciation of the experience highlighted which others might have just taken for granted. Elon's over-arching goal of making people be excited to get up in the morning needs to be transmitted to the masses. It's not enough to achieve it, it needs to be documented as it unfolds. More so than just a standard biography, Elon needs someone to document the sheer breathtaking experience of how he has already brought our optimistic science fiction future into today's reality. Noone would do it better than you. I've been following your work since the start, so much so that you have made me a fan of all things Space. Your videos are always engaging, and the progress you've made over the years in quality is excellent - the epitome of Elon's iterative design philosophy. Your success in outreach has brought the dream of space travel to all the little would-be engineers and scientists the world over.

@SuperSMT 2 года назад

If anyone deserves a seat on Dear Moon, it's tim!

@Usrthsbcufeh 2 года назад

why tf u writing fan fics lmaooo

@nickhowatson4745 Год назад

@@Usrthsbcufeh well now Tim is actually going to the moon so its even better than going to the ISS and not really fan fiction anymore. hes been chosen as one of the crew members for the DearMoon mission which is going to orbit the moon and is launching in the end of next year 2023

@Usrthsbcufeh Год назад

@@nickhowatson4745 but I’ll set a reminder for end of next year to see if u deleted ur comment lmaoo

@danrocketfan9606 2 года назад

I love you teaching videos. Definitely brings space down to earth for us everyday people!

@munindramohanta2584 2 года назад

wow, finished a 1 hr video in 2 hrs!! but boy do you learn a lot!!! This can easily be a Netflix special for geeks or on discovery +.I can only imagine the amount of research this needs!!

@kevenbair7878 2 года назад

I’ve been a Florida resident for 20 plus years but had never been to the visitor center, went yesterday! and this video is the perfect thing to watch after! Your the best dude!

@StealthParrot 2 года назад

Another amazing educational and fascinating video. The graphics are superb and really help simplify and visualize these extremely complex engine systems. Thanks Tim.

@thinfourth 2 года назад

Can you imagine the horror of discovery channel doing this

@valentinmoeller 2 года назад

That was a great video! Thank you!

@brettpatching 2 года назад

This was wonderful Tim and Team!! Definitely bringing this level of complexity down to earth for everyday people.

@janedoe9940 2 года назад

Fantastic video, Tim! I agree, it's your best video in terms of clarity and animations. I am able to follow it on 2x, which means it's incredibly well made. Congratulations! Now, I think we're all waiting for the "How to start a rocket" video :)

@calebj1145 2 года назад

High quality, accurate, intelligent content in an accessible format. Exactly what I've come to expect from this channel!

@niclewis7268 2 года назад

The year is 2067, the first warp engines are being tested in humanities pursuit to other stars, and Tim Dodd explains exactly how it works as simply as 2+2

@pluto8404 2 года назад

_how to program a warp engine with 3 lines of python_

@alwynwatson6119 2 года назад

And in 2026 how the fuel cell powered cryogenic superconducting combined radial and axial flux electric motor fed rocket engines work.

@-danR 2 года назад

Or why it won't work. But first comes: "Why spin-launch won't work."

@rhysdemazure4533 2 года назад

I just noticed I've designed many tap-off engines, without even knowing it, thought it was a closed cycle. Great video! 👍

@darionz 2 года назад

Again, the inspiration to continue my studies brought upon by this amazing channel is greatly appreciated! Thanks Tim and the team that made this video possible! 10/10

@SimonGould1024 2 года назад

Loving all these videos about how to get into space but would love to see some in-depth vids on once you are in space. Things like getting rid of excess heat, potential ways of artificial gravity, power sources for long durations, water/waste recycling, exercising, etc. Thanks.

@JaySmith91 2 года назад

I really liked how the equations were presented around 39:00. Including the variables in one color and their definitions immediately to the right in small text. Genius! I might start doing that whenever the situation calls.

@FlorianBinsker 2 года назад

It's a great presentation except for the equation being wrong in terms of units.

@TimbavatiLion 2 года назад

Wow, i finally understood the different cycle types. And it gets a bit more obvious why the Raptor Engine is supposed to be so robust and maintenance-easy with the preburners running so cool.

@Flowrazornapalm 9 месяцев назад

Coming back to this after a year. We definately need a video about the exotics, like SRB's, xenon/ion and nuclear

@isaytheenay5961 2 года назад

1 minute out, and already 49 comments. Wow Tim, You've come a long way. And we've been here for the ride from the beginning. Thank you for leading us all on this wild journey!

@Effectlife 2 года назад

The production on these videos is once again insane. I just watched a video of almost an hour, and I didn't notice time passing by this quickly. I felt like the video only just started. Well done, Tim & Team!

@nightfox6738 2 года назад

Tim I love the way you present mathematical equations. Most people just show the letters/symbols representing each term and tell you what it represents once, it's so helpful how every time you show the equation the labels are always there as a reminder. And your graphic design for it is so elegant. Great work as always!

@dharmasrisilva5997 2 года назад

Tim thank you so much for putting up that animated diagram of the ox-rich turbopump at @29:04 instead of just the basic diagram like in your raptor engine video... it really helped me to understand it further.

@Mexican_Robobot42 2 года назад

As always, thank you for a well-made video! You deserve all the support you receive and I’m happy for you on the point you’ve reached right now!

@patrickgottschald1226 2 года назад

OMG! Thank you Tim! Again one these very well done videos. And you still increased quality. Amazing, loved watching. I’m just sorry I can only 👍 it once. Looking forward to the next. Maybe electric engines like VSIMR or Hall thrusters.

@robmerrell1745 2 года назад

How have less than 10% of the people that watches this video given it a thumbs up? I suck at RU-vid so I don't know how to properly tag this. Dark Warrior said it best "I learned more about rocket science in the last 30 minutes than I have in 5 years, wow dude. You are good at teaching this."

@blenkiron1795 2 года назад

Such a great video, as always of course! I love the way you start with the simplest cycle types instead of the complex ones, it really helps me understand and grasp why these engines are designed the way that they are, and why all that complexity is necessary. I also like how you discuss WHY some cycles are used instead of others: it is often overlooked in videos explaining specific cycles.

@leeroychang 2 года назад

Much Love Tim. Looking forward to getting through this! Thank you!

@jackmiller505 2 года назад

One of your best yet, Tim. Awesome job working us up to more complexity!

@faisolk 2 года назад

Thank you for this video I've been lost in the last couple of days looking for how rocket engines are fed fuel and this really made it clear, i can't wait to know how rocket engines are started.

@NickGobin 2 года назад

Great graphics as always Tim! I particularly enjoyed the review of the simple (pressure fed) and really exotic engines (expander and tap off). And now I am really really looking forward to the episode on starting a rocket engine!

@sean_silvers 2 года назад

The day has finally arrived!!! Thank you Tim! ❤

@jonaspiccinotti5916 2 года назад

❤️ Tim you are like most useful and entertaining civil servant considering how much knowledge you spread for free! You are the best

@kenyanroots 2 года назад

Videos like this are why I think video sharing like RU-vid is one of the greatest gifts of the internet age. Thank you.

@gallomimia7780 2 месяца назад

I thought I knew a fair amount about rocketry, but this video shed a lot of light on how much I didn't know that I knew. Thanks, as it was very rich in information and rather light on oxidizing the brain cells.

@codymills2393 2 года назад

Outstanding work as always Tim! I definitely had to rewind quite a few times so that my small brain could absorb what you were saying but you really did make it understandable!

@iwayini 2 года назад

Hey Tim, thanks for taking the time to make this video. Absolutely brilliant and great follow on from the Russian engine video. Keep up the great work of bringing space exploration down to a level we can all understand. I have learnt loads which in turn has upped my interest in rockets. Greetings from the UK.

@danielallington5152 Год назад

Tim, you have done it again. You have paid it forward so well that it really shows I am able to understand so much better after you given your explanations, than anyone else that does deep dives on space.. I always come away not only with a greater understanding of the subject, but with also a greater respect for what and how you do it. Hats off to you!

@alanrogers7090 2 года назад

Thanks, Tim. You've cleared up some questions that I had floating around in my mind, though you've also opened some new "tracks" for my "train of thoughts" to pursue. As always, you are clear in your explanations and the animations really help as well.

@jukkiivi4282 5 месяцев назад

@EverydayAstronaut you didn't specify which orbit. Lunar Module Ascent Engine was pressure fed and it got Ascent Module on lunar orbit. It even managed it as a single stage to orbit.

@schlenbea 2 года назад

Thanks Tim! This was so helpful and really cleared up a lot of questions I had! Can't wait for how to start a rocket engine!

@jujenho 2 года назад

This is the kind of video in which the Everyday Astronaut excells: gradually increasing the complexity, highly systemic, and understandable. The animated technical illustrations are superb. Congratulations! This chanel is unbeatable in educantig viewers.

@morkovija Год назад

I love the density of information in this one. Basically a book condensed into a 55 minute goodness

@chrisfletcher8140 2 года назад

I loved the vid, definitely back to what I love from your content. ❤🎉 Q: can you delve into the metallurgy aspects of rocket engines?

@f205v 2 года назад

THIS!

@EverydayAstronaut 2 года назад

I might be able to some day but a lot of that is closely guarded secrets unfortunately 😕

@chrisfletcher8140 2 года назад

@@EverydayAstronaut I'm not surprised to hear that - everything you do is brilliant and inspiring and I will love watching your next videos regardless!

@joh5417 2 года назад

Was soo excited. But still can't wait for the whole starbase interview. Thank you for the great work!!!

@tekitrash 2 года назад

Honestly, I really just like hearing you talk and explain things. Your pacing is really good, your accent is pleasant and your content is compact and concise while not being devoid of your own opinions or anecdotes that are interesting. Thanks for the great work Tim!

@FilAmStargazer 2 года назад

EXCELLENT work. Really filled in the gaps that were in the orginal Raptor video. Nice emphasis on how the flow in the pre-burner doesn't go backwards and using that as a way to tie the discussions together

@roguevoid5214 2 года назад

This is such an awesome video Tim! Really appreciate all the efforts that you and your team put into this video, you're definitely bringing space down to earth for everyday people! Btw, I would love to watch an everyday astronaut video comparing JWST and Hubble.

@delh1415 2 года назад

Awesome, thanks for the incredibly well explained and well presented lesson on how rocket engines work, I will have to watch this several times to cement in some of the concepts :)

@jimwray8621 Год назад

I was beginning to worry that you wouldn't talk about the RL-10. If memory serves (and I'm 84 now so who knows) the RL-10 used a bootstrap start where the liquid hydrogen was used to "prime" the engine such that when it was needed to actually ignite and provide thrust, a frangible disk valve was pierced. The liquid hydrogen immediately flashed to gas which then "powered" the turbo pump to pump the lox and more hydrogen into the engine. When the correct condition was achieved the engine was lit and the process continued until engine was shut down. Obviously an oversimplification but should begin to illustrate the RL-10's somewhat novel design. One of my earliest jobs was working as an instrumentation tech for Pratt&Whitney on the RL-10 at their Everglades facility and always thought that the RL-10 was a work of art...

@ashwindoraiswamy1721 Год назад

I wanted to refresh my memory on cycle types and watched this video. I think this is the best explanation I've ever seen!

@stephenmorrow5069 2 года назад

Your hydrogen is undense has made my rocket explanations at work more memorable. People remember that because it comes off awkward and people remember that. I am doing what I can to bring space down for everyday people too with the stuff I learn from you and Scott Manley.

@aidanwansbrough7495 2 года назад

This was incredibly well explained!! Thank you!

@geist96 2 года назад

gotta say thanks again Tim. you got me hooked on these rocket videos and starship back in the day. And i have been following it all and watching as much as i can ever since. its really great to see the growth of it all and learn a little bit of how it all works.

@russelljohnson6243 Год назад

You know what Tim, I would rather listen to you any day that a self-important person like Neil Tyson. You admit to being human and that you might struggle to understand certain complex subjects. I am so glad you put yourself out there and bridge the gap between people and giant things like NASA, Space X, and Rocket Technology. You are greatly appreciated, Sir!

@saadusmani78 2 года назад

As always, this video is well-informed and well-explained. Keep up the good work!👍

@razorreaper8440 2 года назад

This is great content for the space & rocket nerd in me for years now... and still counting. Keep up the good work 👏 👍 @ Tim

@Rune2242 Год назад

Can't stop thinking about sequential turbo setups when watching the open cycle chapter. It functions almost exactly the same! Using a smaller rocket to power the turbine shaft of a larger rocket in order to produce more pressure on its way to the combustion chamber! Same idea as using a smaller, quickly spooling turbo to spin the compressor turbine of a larger turbo in order to send more pressure to a combustion chamber. Engineering is beautiful.

@raegune 2 года назад

Wonderful explanations of complex concepts. The fact that you can make this topic digestible in the way you have fully demonstrates that your tagline of "bringing space down to earth for everyday people" isn't just lip-service. Thanks so much for doing what you do!

@sniperdude21 2 года назад

Thank you so much Tim for bringing us these moments! History in the making and I super appreciate your intense understanding with Elon. Amazing work, please keep it up! 👏

@kaltenstein7718 2 года назад

Your Videos are always so cool to watch, you dont notice the hour going by, because it is all so interesting. Can't wait for the Full Elon Interview!

@jujenho 2 года назад

Tim, your dedication is making many of your viewers amateur “rocket scientists”. I am old enough to have witnessed fhe space race since the beggining as a teenager, and been fortunate to have built a considerable first-class technical library on the subject. But I never stop being surprised to having learned something in all of your videos. Keep it up, there is more to learn.

@Nemxxi Год назад

I never thought I could understand a rocket engine, until now. Thank you very much

@pauldonovan4572 7 месяцев назад

I have a headache

@mystifoxtech 24 дня назад

same

@escthedark3709 23 дня назад

It's just rocket science

@coopervera7275 12 часов назад

Me too

@idbek 2 года назад

This was fantastic - thanks! I learned a ton. So well done! Can’t wait for more! Q: How is the Raptor2 an improvement over version1?

@galfisk 2 года назад

It's got a lot fewer sensors and bolted flanges.

@Deathven1482 2 года назад

In addition to the previous comment, it also has more thrust and is simpler to manufacture!

@Eur08000 2 года назад

to be honest: I though this is going to be dry and boring and I wouldn't get it at the end, but I was very very surprised how entertaining and informative it was and that I actually understood it! very well done and am looking forward to more of those.

@richardjones38 2 года назад

As an engineer with only a passing interest on space technology, I'd seen one of your videos before, and thought 'wow this guy is well connected - he gets a personal tour of Space X with Elon Musk'. Having fallen asleep with RU-vid on auto play, and woken up with this playing, it's very easy to see why. That was probably the best example of how to present a very complex subject to a largely non specialist audience I've ever seen. Exceptional work!

@stonefreak5763 2 года назад

23:35 not a big mistake, but sadly the "°C" is missing at the temperature of the Combustion chamber Otherwise a very awesome Video tho.

@SoumilSahu 2 года назад

I've always had one gripe with your videos explaining rocket engines: FLUIDS FLOW from regions of high pressure to low pressure. PRESSURE DOES NOT FLOW, it is not a thing, it is a quantity. It doesn't really change the conclusions, but it can be confusing for a lay person. Incredible video otherwise!