What it's like inside rocket engines! Viking 2 and Vulcain 1!

[@scottmanley]

17:50 - The sign was wrong in 2019, I told them it was wrong, they said they'd fix it.

[@nrg4285]

Even Scott Manley told em 😂

[@LordFalconsword]

When the Awesome Scott Manley knows more than a museum display! LOL

[@frames123]

bruhh those guys better change is now.

[@rodolpheortalo4975]

Isn't it the propulsion system of Ariane 4 too btw? (not Ariane 1)

[@sulljoh1]

Wow 😂

[@bsl2501]

This is humbling. Looking at highly complicated contraptions and starting to explain, getting things right, getting things wrong, not getting thrown of by erroneous exhibit signs … displaying first principles thinking. Cheers to that!You guys rock!

[@xlynx9]

Very impressive Tim. You know you've made it when you can confidently tell a museum that they're wrong, without even reading about the object that they're exhibiting.

[@JustinDial256]

17:43

[@Stabruder]

@@JustinDial256 thx

[@fightme5543]

Correcting Elon fixing museums

[@_aullik]

I mean the museum had it wrong for a very long time. If i remember correctly it was already wrong when Scott Manley did his video.

[@TheElipsus]

Hey ! French dude here, little fun fact, have e you noticed how all the engines have names like Vulcain, Viking, Veronique, etc ? They all start in V because they are designed in Vernon ! It's a small town near Paris that host "Safran Spacecraft Propulsion " the company that designed all these engines :) And to continue on the V thing, Ariane 6 second stage engine will be named Vinci !

[@cogoid]

Safran took over later. The engines were designed in LRBA (Laboratoire de Recherches Ballistiques et Aerodynamiques) which later became SEP (Societe Europeenne de Propulsion). The chief designer of Viking was Karl-Heinz Bringer, but he was not the one who came up with the thrust chamber design -- this came from elsewhere.

[@TheElipsus]

@@cogoid good addition ! I didn't knew about that ! My knowledge start at about 2013 when it was named Snecma :)

[@cogoid]

@@TheElipsus Oh. It actually goes back all the way to Peenemünde. After the war, the Germans who did not go to USA or USSR were starving to death, and they were offered food if they were willing to come to Vernon and work on Super-Vergeltungswaffe 2. Some decided to join, and there was a village of ex-Peenemünde engineers established in the forest on the other side of the river from Vernon. But there were no funding to actually make Super-V2, so they switched to the much smaller hyperholic Wasserfall rocket, and derived a small meteorological research rocket from it. They named it Veronica. But they could not make it to work reliably. The engine worked well most of the time, but sometimes unexpectedly exploded. Fortunately, another group which was working on antiaircraft missiles "PARCA", has developed in late 1940s a reliable hyperholic engine which did work reliably. In the end, they did not use it for the military missile (it switched to solid fuel), but it was adopted for Veronique AGI. This is where this design of the injector and of the whole thrust chamber came from. That was little by little scaled up without changing the principle to Vexin, Vesta, and Valois. Then Karl-Heinz Bringer, who was an expert in gas generators, suggested to bulid a turbopump-driven engine, the Viking. There were of course largely thousands of French engineers and many French companies working on these developments.The Germans only provided some guidance based on from their prior experience. There were also contributions from international partners. AFAIK, the turbopump was made by a company in Germany. And the fuel seems to have even come from the USSR, with which France always had a special relationship.

[@bartwaggoner2000]

I think it is somewhat sad that there is so much French engineering brilliance trapped in the EU beauracracy - so many great things that could be invented by them!

[@cogoid]

@@bartwaggoner2000 Bureaucracy can be a drag, but cooperation between European countries is essential. The combustion chamber and the nozzle for this engine, though designed in France, are actually fabricated in Sweden. It's really good to combine the best know-how from every country.

[@jasonwhatley3211]

This is a fun video format, Tim! What a cool idea! Also, thank you for taking a picture with me and my wife at Starbase the day before the Starship launch!

[@AlexTriana]

This is the future first youtuber astronaut in history

[@daverichards4195]

The guy from dude perfect was first for KZbinrs if you count Jeff’s penis rocket

[@patreekotime4578]

Maybe. Someone could always just throw cash at Bezos and get a commercial astronaut ride.

[@gandazgul]

@@patreekotime4578 Can't compare the Bezos joyride with a trip around the moon!

[@zenothksp]

Actually, of the people from Dude Perfect went to space in a New Shepard.

[@KsNewSpace]

I think that one guy went to space on New Shepard. So Tim will the first (probably) in orbit and around the Moon. But then again almost anyone has a KZbin channel these days so what qualifies for a KZbinr? I would just say Tim will be the first Dodd in space :D edit: nvm, smeone else was faster

[@strykerfpv]

Hey Tim! currently 14 and an aspiring aerospace engineer. ive learned almost everything i know from your videos and your videos were what inspired me to pursue this path. thank you for everything youve done and made tim. good luck on dearmoon! ❤❤

[@Cornell90]

Good luck buddy

[@TheMoneypresident]

Learn how to maintain every engine possible.

[@peterfireflylund]

Check out Rocket Propulsion Elements by Sutton. Make sure you learn your calculus (including differential equations and multivariate calculus and vector calculus). Make sure you learn lots of linear algebra. Good luck!

[@aldunlop4622]

Good luck from Australia mate, if you apply yourself you’ll get there!

[@strykerfpv]

thank you all so much :)

[@cogoid]

French engines are quite unique, and there is a rather long story of how they came to be this way. It all started in late 1940s with a conventional flat shower-head injector. It sort of worked, but half of the rockets exploded due to high frequency combustion instability. Then, in 1958 this annular injector was invented as a substitute. It proved to be much more stable. The 1958 Veronique AGI engine was then scaled up several times for successive generations of larger rockets. Finally, turbopumps were added, and this engine which we saw here became reality.

[@cromefire_]

And they aren't really french engines anymore (at least for the Vulcain 1), because nowadays there is a lot of development from countries Germany and Italy too. The Vulcain 2's test site for example is in Germany and there's likely a lot of engineers from all over Europe working on it.

[@cogoid]

@@cromefire_ I was speaking specifically of this line of rather simple French engines with annular injectors. These are quite unique, and their basic design stayed the same for several decades. There are no mainstream engines from the USSR or USA that resemble these, even though in all three countries the development was conducted by teams of engineers of many nationalities.

[@jespernyman6738]

We need a full video on European rocket engines at some point!

[@Half_Finis]

cant wait for the 5min video! /

[@johannesgutsmiedl366]

@@Half_Finis oh there is a bit to talk about, just on the Ariane you have Viking, Vulcain, Vinci, Aestus and HM-7B, plus a bunch of various size solid motors, and those all use different fuels and cycles plus sometimes super unique design choices like on the Viking shown here... it's not as large a family as US engines and definitely nowhere close to the insanity of the soviet union but still can make for an interesting video :)

[@adolphtrudeau]

This is awesome, like watching a BigClive exploration only with a rocket. Listening to the first principles reasoning about what different parts contribute to the whole is such a treat. The AR style pointers that stick to the object as the video moves are phenominal.

[@sanderdekreij]

Love seeing you explore things outside of your knowledge domain! So fun to see your thought processes and get some insight into what kind of exploration you may go through for video script preparations😄 I was having a blast when I got to visit the museum a while back and can't wait to visit ASAP again🙌🏼 glad to see you enjoyed it just as much as I did!

[@profwaldone]

Tim: i dont know anything about these engines. also Tim: actually I think this museum display sign is wrong.

[@ryndrssn]

bro started correcting museum sign lol just shows how knowledgeable he has gotten all these years

[@AnthonyRamirez3D]

Tim Dodd, You are the MAN!!!! You have definitely grown from when you started to now that you can walk up to a rocket engine you know nothing about and figure most of it out on your own!!! Even able to tell that the museum's display placard is wrong!!! Hat off to you for being so knowledgeable and self-taught!!!

[@Humuku]

It's probably not that easy to cut all these pipes in such an educational way. So kudos to whomever did the planning and the cutting.

[@DroneDocs]

I was thinking the same thing.

[@AcidGambit419]

Ya I was thinking how cool would it be to be the dude paid to cut up a whole rocket engine and what kind of blade did he use

[@tactileslut]

Now they need someone who can light it so the curious attendee doesn't need to bring his flashlight app.

[@trespire]

Cobalt is what high end drill bits and end mills are made of. Taking a hacksaw to this nozzle wouldn't even scratch it.

[@ronblack7870]

@@AcidGambit419 abrasive zipcut wheel. .045 ( aprox 1 mm ) thick or a jewelers saw blade . the abrasive blade cuts pretty much anything.

[@Caseyissuperawesome]

This is really cool. I feel like there has always been a disconnect between the simplified diagrams and the actual hardware in these engines, this goes some distance in helping bridge that gap, and understanding how rocket engines work in a lot more physical terms. Thanks for your content Tim!

[@kaltenstein7718]

My girlfriend and I visited a temporary space exhibition at a local museum here inm Bremen and they had a complete Viking Engine there. Was hard to explain why I was crawling all over it

[@AM-ty9lp]

I've worked on Merlin, Nk33, and RD-181, and Tim can identify all the components of this engine way better than me.

[@instinctroller]

This is in my top 5 favorite Everyday Astronaut videos. It's one thing to research and recite, it's another entirely to know something well enough to comment right on the spot! Also - showing a real engine is a very effective way to teach about the function of the engine. Hopefully you can do more walkthroughs like this in the future.

[@Hardik1115]

I can say that with this video I got to understand a little bit about Vikas engine also as it is also derived from viking. We can observe that the water tank, fuel are also the same.

[@t.a.r.s4982]

Thank you for having mentionned "techniques spatiales". As a french rocket nerd I garanty you this channel is great, he made several videos absolutely fabulous about interesting topics (the most famous are about rocket flames), thank you Tim ;)

[@robert_hensing]

Fun fact: even the French hydrolox engines are all Hypergaulic

[@levmatta]

This man is correcting the museum sign of a engine he does not know!!! Please give him a honorary doctorate, he deserves it

[@MarcelHuguenin]

Wow, great video Tim, loved the tour you gave and the (funny) annotations. That was a cool format. Wish I would have know you were there, just 40km from my home. I would gladly have stopped by to say hello. Impressive you can name so many parts from engines you haven't seen before. Very cool!

[@RudCh01]

Only an expert would have the confidence to question another expert - in this case the Viking 2 placard, which non-experts would reasonably expect to be accurate - and not only be right that the other expert was wrong, but then deduce the correct answer. Very impressive.

[@EmilienGosselin]

Great video, Tim! As someone who works on these engines test bench In Vernon, that was fun to watch

[@Mallchad]

This kind of off the cuff video just playing games with very complex and expensive engines is super entertaining :P

[@meesbeumer6499]

Nice deductions Tim! I'm currently studying Aerospace Engineering at TU Delft. In our faculty's main hall we have the same engine as decoration (Viking II). The bachelor graduation ceremony usually happens at Space Expo. Students all get to explain these cool things about space and rockets to friends and family. I still recall my own deduction process hanging with my head in that cut-out engine trying to explain what all these pipes etc. were for. Thanks for the elaborate explanation, apart from the details I think it is very impressive how you have figured out the topology!

[@BabyMakR]

More like this please. Your live streams are good and your deep dives are awesome but this was on a next level. Watching you not just describe what you're seeing but actually discovering is beautiful to watch.

[@nicolaslopeza2251]

Gotta appreciate the cutaways. They help a lot in understanding what's going on. I hope Tim can look at some other engines this same way in the future.

[@Doc_Roe]

So that is why before falcon 9 stage separation you hear launch command say something like stage 2 engine chill has begun? interesting.. I never knew the pumps had to be saturated and chilled, I thought it was just chilling the nozzle or something to help with the heat of the engine firing. I love learning new things! Thanks Tim for all that you do!

[@EverydayAstronaut]

Watch my video on how to start a rocket engine! You’ll learn all about it!

[@TheEvilmooseofdoom]

That's why you see white vapour pouring out of a starship during a hop and ice coming off a F9 while it's coming back. The engine chill system.

[@NavrasNeo]

yep, this not only protects the pumps from thermal shock but rather also the propelant from boiling due to the warm pumps, which avoids bubbles that can damage the pump to destruction.

[@peterfireflylund]

I'm impressed they can chill down the turbo pumps -- without having leaks from the hydrogen side into the oxygen side (hydrolox). Or from the oxygen side into the RP-1 side (kerolox), or from the wherever to whereever (methalox).

[@helpinghandalmere1]

@@EverydayAstronaut are you still in Holland?

[@Paul-od9fr]

dude... new level of respect for how deeply you've learned this $#!+

[@DavidMasefield]

It's a fabulous museum Tim, I went the in August 2022. Thanks for a great video!

[@aventu-yt]

I really like the idea to discover a new rocket engine together with your viewers. 👍

[@IcedPlasma]

Seconding that. Would be really cool to see Tim tour around to different complexes and exhibits and do a fun little learn together video. I know the man is very very busy but it's just an idea. This video was awesome!

[@MeteorMark]

Good to see you in the Netherlands Tim! It's indeed a fun museum, and the ESA Open Day is always popular and crowded, have been there once! Have fun if you still here, or come back anytime!

[@jonesscotta79]

Tim, enjoyed the on-the-fly problem solving. I am sure a fair portion of your viewership do the same thing when we visit museums, myself included. The first time I saw a J2 engine in Durham NC, I spent 30 mins continuously circling and chasing fuel and oxidizer flows. ❤ regeneratively cooled engines.

[@evrydayamerican]

I just watch a Docu last night on KZbin from Free Docu about the Ariane and i said the same thing Tim. It was so cool to see a real in depth Docu on these systems cause we have never seen a real behind the scenes about ESA and Ariane

[@71Kailee]

Tim your content rocks. As always, after just a couple of minutes it's clear you know your stuff and know how to communicate. Keep them coming like this. Can't wait for your training & flight!

[@Emu0181]

Great video as always. One small observation; I tend to watch videos with the closed captioning on, on this video your post comments fell in basically the same area as the CC text. Just something to be aware of in editing/graphic design overlay. Thanks again for another interesting video

[@old_arsed_eldergoth2800]

Dear Moon was smart to select Tim- anything goes wrong with Starship while they're up there, they'll just send him out with a screwdriver and a rope around his waist to fix the engines

[@gasdive]

Amazing how at the beginning of the video the engine looked like a big mess of tubes, and by the end I could see the whole engine.

[@barryscott6222]

Great video. Actual hardware is a great teaching/learning tool. Especially when you see something you have only read about, in real life. And then realise how big - or small - that thing actually is. Turbo pumps are a classic example of something generating astronomical power out of such a tiny package.

[@johncage5368]

"Looking Inside Rocket Engines I don't Know Anything About!" ... the modern version of "staring into the fire" 😉 You did a great job explaining those engines without engine-specific detailed knowledge! Someone give Tim an honorary rocket engine engineer title. 👍

[@todddembsky8321]

Tim, this was a uber fan-darn-tastic video!! Thank you for bringing us along. Amazing how the state motto of Iowa is "A Place to Grow" this was a huge growing experience. So informative.

[@jeffabrams9701]

I could watch hours of this, someone please get Tim all of the rocket engines.

[@TexasKid747]

"I don't know anything about these engines..." I wish I knew so little about stuff I know nothing of. lol... Tim, you are amazing and such a gift to us viewers that truly just appreciate the science, the successes and the dedication of those in the industry. Cheers from Texas. Please, everyone that can, expand the menu, hit the Thanks button and send $1, or $2, or $5, or more to Tim to keep this channel going. I'm starting with $5.

[@charlesblithfield6182]

Its cool how you are translating your respect for the creators of these technologies into interesting content and how that has opened doors for you.

[@sankubanku1633]

The viking engine is still flying in the form of the Vikas engine in ISRO launch vehicles...

[@oisforoffroad]

17:49. Tim visits rocket museum and corrects their signs after just looking at things.

[@firstnlast]

I absolutely love this! Tim doing unknown rocket engine analysis is so educational. I love how he pieces it together and isn’t scared to say something wrong. Please keep doing this. This is the core of your channel, bringing space down to Earth for everyday people.

[@RetroHoo]

This is actually around the corner from where I live. I’ve been walking around this engine trying to figure it out 😅 There aren’t many other rocket engines you can walk around like this in NL. Love seeing you explore this engine!

[@Tonicwine999]

I quite liked this approach for this video, you kinda figuring it out when faced with the real thing, some mistakes, corrections.... I can't imagine there are many people on the planet that know every detail about perfectly about these engines

[@moisnikpaat7877]

You should definitely do a video about European engines. Thanks for the content!

[@andrewlavey6992]

What an excellent presentation, Tim. You have some knowledge that professionals dream about.

[@berylkerman3009]

Ariane 1 engine was using water to cool down gas generator exhaust, as gas generator was burning stoichiometric. Thats what this third small pump was doing.

[@racing59pinto]

Thanks for furthering our collective ESA rocketry knowledge!

[@wk8219]

It’s taken me three months before I watched this, usually it doesn’t take more than three hours for one of Tim‘s videos for me. But I have to say this is awesome. I’m really glad I’m watching it.

[@feelingzhakkaas]

absolutely wonderful video... we had a virtual tour..... should v used laser pointer for easy pointing... great efforts bro... god bless

[@TallinuTV]

Love that AR video editing! Nice work!

[@EverydayAstronaut]

Thank you! I enjoyed doing those, I feel like it added a lot!

[@janedoe9940]

Ok, you just gave me one reason to got to the Netherlands with the kdis. Now I only have to figure out when. But this museum looks absolutely amazing. Thanks for the great video, Tim. It's amazing to watch your progress trough rocket tech. Really impressive.

[@sixstringsimpleton]

Two minutes in, and I'm already excited by how you're thinking about it.

[@henkdeklapsteen6787]

The netherlands, amazing. I went to that space expo when I was 15 years old. Loved it and was lucky to meet andre kuipers. Almost 10 years ago now.

[@Ranjitzu]

This is gonna be a like "Watch as Tim learn - together with you guys"-video sorta 😄 Great video, a steep learning curve for you but I bet you had fun making together with your team! Whoooop whooop whoop whop!

[@literallyshaking8019]

When you look at the incredible engineering, complexity, machining, welding and exotic materials that go into a single rocket engine, it’s absolutely INSANE to me that up until recently we essentially threw multiples of them away with EVERY launch.

[@ryno6101]

Annular injector like an old Holley dominator carburetor 😂 Great job describing 2❤

[@snakevera]

Its so incredible the size of the piping compared to the immense amount of propellants moved through the system per second. Great video Tim thank you ✌🚀

[@michaelkim3432]

Gawd, it's amazing how much knowledge you've absorbed Tim! You must have trouble sleeping at night! Can't wait to see you on Starship headed for the Moon!

[@mikeconnery4652]

This was definitely worth watching and a great learning experience.

[@mercerconsulting9728]

Great tour. This is exactly the kind of detailed information I love to dig into.

[@Matthew-by6vl]

Excellent content as always Tim and Team! Always enjoyable watching you nerd out over rocket engines. I know it's like a broken record at this point, but there is nobody more deserving to represent regular space enthusiasts than you. We are all looking forward to getting your perspective.

[@deyanmohamed]

Tim, thank you so much for this video :D I've been in the Netherlands for about 4 years and am only learning about this museum now. Will visit soon for sure!

[@Thanawat_Kamjohnviriyawanit]

Thanks for the knowledge, I'm having fun with this.😊

[@Flashlight005]

Oh wow, you were in the Netherlands! I live here (yes I'm Dutch) and visited this expo center when our kids were little.

[@tsr207]

Glad to see a video on the Ariane series - thank you for your commitment !

[@rob.dowson]

Great video Tim! Love the informal format and learning about the engine along with you. Great add-on animations too - on top of a moving video too! More European space videos please! How about one about the UK's Black Arrow?

[@eternalskywalker9440]

It's fun to watch Tim's self deprecating manner as he gets it right time after time. He knows more about these engines than 99% of visitors, while claiming he knows nothing.

[@samcarpenter_]

This 'go look at some stuff with a guy who works there' type video is screaming Adam Savage's tested to me. One of my fave video formats.

[@AP-kl3qe]

Super interesting to see you trying to figure out these engines on the spot. To be honest, I learnt more from this video than your super well produced and scripted ones. Thanks!

[@cryptout]

It’s cool to see you’re having fun in my country. Great video Tim!

[@joel30466]

I've stood in that exact spot :d, it's not everyday that the everyday austronaut visits your country

[@simongeard4824]

It makes sense that the Vulcain is an early test article... it's got the same kind of complexity that Raptor 1 had, pipes and clutter everywhere. Looking at other images online, it looks like later production articles are a bit cleaner, though nothing like Raptor 2.

[@gordvan]

It's like watching a kid in a candy store! Love it.

[@offdagrid877]

You beat me to it Tim I missed going to the museum when I was over there. Nice video

[@thecros1076]

Hey Tim , some point back in time , indian scientists were called to work on the Viking engine . It was a agreement of providing scientists to work and help develop this engine . Scientist prof Nambi narayan was one of them who after coming to India built the same Viking engine and went for testing the same engine in French test stand . Today the same Viking engine in india is called Vikas engine and is the workhorse of the ISRO . Some industrial partner's such as MTAR technologies were people who went with the scientists to work for the French . Now to date mtar technologies is responsible for manufacturing and certifying the vikas engine used on pslv and gslv rockets of India . This was just a small info I knew about , thought to share the same .

[@martintfsportland]

I've been watching since the days of the spacesuit, this is probably the best video you have made (so far).

[@johndododoe1411]

Spacesuit still there, in cloth form .

[@seldoon_nemar]

Mockup parts are usually first run parts, QC test articles, or parts that have a deviation that excludes them from service. They are still very useful, because you can install it, run all your extra lines and fittings based off the mockup's correct positions, fully build the assembly subsystems around it, verify them, and then install the flight article. this keeps damage like the repairs done on the engine bell from hapenening to ancillary parts where it can be avoided. I've even heard of mockup parts in the complete wrong material. that might be a stainless steel part, while the flight article is inconel for example. just for weight alone, i'd rather work with the stainless part. inco is HEAVY

[@antibrevity]

This was surprisingly awesome. Thanks, Tim, for taking the risk to talk about engines that you aren't familiar with.

[@Yutani_Crayven]

This is such a cool video. Appreciation for any machine scales so well with how much you know about all the mechanisms that it employs and exploits and how well you can understand and explain them. Not only that, but it's a good test and tool for your knowledge of rocketry as well.

[@MrGeoffHilton]

Great tour Tim, felt like I was there.

[@InCent75]

This vulcain 2 is one of the most reliable rocket engine ! Remember that there is only one under Ariane 5.

[@matiasdanieltrapagliamansi3109]

Loved the fresh perspective! Plus the almost all knowing comments 🎉

[@drewlovely2668]

This was fun, I'd love to see more!

[@martinilopez1]

wow! i just cant believe that someone like Tim didnt know the famous Vulcain engine.. "Allumage Vulcain, allumage des EAP... et decolage"

[@MegaMerijn]

Ah man wish i knew you were in my country would've loved to meet you and wow i had no idea this place existed here might plan a visit there too and take a look at these engines!

[@SFS-V]

16:46 the toroidal tank is for water injection to cool down the walls and gas generator! , also VIKAS engine of ISRO uses water injection as it is based on the Viking engine. Edit: oh, you figured it out! (22:46) 😅

[@sathyanarayanansridhar3144]

Exactly! Vikas engine is based on the Viking engine. But, ISRO does something that avoids the confusion. They paint the toroidal tank blue.

[@CuriousEngineer]

India's Vikas engine is based on the Viking engine is still in used in LVM3 Launch vehicle, india is testing SCE200 ENGINE TO REPLACE this. SCE200 is in category of raptor and RS-25 ENGINE.

[@PittsburghBeekeeper]

It is Amazing that you are correcting the museum sign. What a nerd! 😊

[@mo155]

You're in the Netherlands! Shame I missed you. Hope you had a good time here in our country.

[@needleonthevinyl]

This is a cool way to still be able to produce a video without having had the chance for research/prep

[@truepatriot223]

Tim's out Rollin' with the Propulsion Posse!!

[@DeRose05]

i hope for a US and EU engine posters like the soviet one you made prior