The Forgotten Nazi Cold Rocket Engine (3D Printed) 

So.... you still looking for more concentrated peroxide ?? 👀

Catalytic reactions are typically directly proportional to the surface area of the catalyst. Swap those beads of silver for silver mesh and place in the nozzle. H2O2 which doesn't react with the KMnO4 (common, due to the violent nature of the reaction and limitations on reaction vessel volume) will get another reaction chance with the silver (it also promotes mixing). Also, a bit of tweaking to the design of your reaction chamber and mixer will help limit the backflow issue you're having. For the mixer, redesign to make it conical around the nozzle (the cone going IN to the chamber) and for the reaction chamber you can add angled (baffled) steps to the side so that expanding gasses favor moving towards the walls of the chamber and nozzle (this also reinforces the chamber which allows you to make it thinner/lighter). Beyond that, you just need to get the H2O2/KMnO2 ratio correct and figure pump(s). Bonus points if you put Tesla valves between the pump(s) and mixer to further limit pressure backflow. - Video idea: Steam Rocket Engine 2.0

A good idea might be to keep using the two syringes and have a small yet powerful electric motor( low KV, 150-350 KV probably ) and a setscrew to simultaneously push on both plungers. If the speed of the motor is to high, i recommend printing a gearbox to increase torque while slowing down the rate of fuel consumption. I understand that this complicates things a great deal, but hey...it's Nazi rocket science, what did you expect? Anyhoe, well done! Keep up the good work.

Two points about rediscovering old chemistry. I am a lot older than you and our chemistry teacher in 1966 was working during WWII in developing 100 vol hydrogen peroxide for use in rockets etc. He was called Dr Roper. As far as I know the V1 a heavy brute of a rocket needed to be shoved up into the sky at reasonable speed before it would fly off it’s pulse jet. This was achieved as aircraft on an aircraft carrier. That is a tube with a slot along the top on which the rocket sat on top of cylindrical slug. The slug was propelled up the launch tube by the mixture you are describing. The slug fell away in front of the launcher. There is one by the road visible through the hedge at Duxford Museum near Cambridge UK. The steam generator is also there with quite a number of chambers and pipes to hold and control the chemistry. The are bound to be pictures somewhere of it perhaps on Wikipedia.

Do not use syringes, use pressurized tanks instead! Take two pressure tanks for propellants, and third tank just for compressed air (a few bar in Coke bottle should be ok). Connect both tanks to third one using some valves. When valves open, high pressure air will push the H2O2 and catalyst out of them into the chamber. This is safer since you can close the valve in case of emergency. This also would provide better control of the mixing ratio. Also a good idea would be to use check-valves to prevent incidents of pressure backflow from chamber.

I love how he didn't even want to talk about a hypergolic rocket engines. Scary stuff.

Careful when mixing those combinations. Surely you have heard of the German pilot who was fatally burned with that stuff due to a leak while his craft was being fueled. Really like your content and style of delivery.

Integza: "For the first time in history, something good came out of Nazi research" NASA: Am I A Joke To You???

It would be interesting to use a FLIR and see how much heat the steam produces, in real time, plus see the primary catalyst points. Good job brother!

There's something so gratifying about watching someone who clearly isn't mentally prepared for the reaction they are initiating.

Dude the quality of the editing of this is amazing. And the unobstructed confidence when delivering lines, even during the zoom ins, is legendary.

Make an ALICE rocket, but using hydrogen peroxide instead of water. en.wikipedia.org/wiki/ALICE_%28propellant%29 [update]The output of H2O2 decomposition is H2O and liberated O2 Al H2O combustion results in Al2O3 and liberated H2. I would presume H2O2 Al combustion would not have much leftover H2 or O2 if the stoichiometry was matched as those have an affinity for each other.

I remember seeing the test footage of one going full vertical and absolutely losing my mind - the interview with Hanna Reitsch is really interesting. They use hydrogen peroxide for some rocket drag cars - make a mini one! :O

I see a Tesla valve coming in handy in preventing the flow back pressure to the syringe! That would be in true Integza style!

I have a stupid idea with some potential, that largely defeats the purpose of this engine Unless I'm stupid, the breakdown of hydrogen peroxide makes a good amount of oxygen gas Why not add some fuel to the catalyst, to react with the oxygen, generating more heat and thrust?

Great video, just a note: at the beginning you are mixing up in the videos two different aircrafts: the HE-176 and the ME-163. Just saw the latter one in "Deutsches Museum" in Munich/Germany. The ME-163 came after the HE-167 and was actually in use even though with little effect.

“Safety third guys” now that’s a quote that I will live by

Chemistry is so cool that we're still blown away by stuff from the 40's. Integza, why not use a tesla valve to feed the fuel evenly to the rocket chamber and prevent the kickback? I think you could still use the syringes without them exploding on your moustache.

"I don't know why I only stop when things go bad" Test until failure is a common strategy, we don't typically include humans in the failure mode though.

1:27 I have a fuel, I have oxidizer, Ugh, fast combustion! I have a pipe, I have some lids, Ugh, rocket shell! Fast combustion, rocket shell, Hugh hugh ahh, hugh ha-ugh, combustion thing that flies away!

Imagine being integza's neighbor across the street and constantly having a portuguese man launching rockets and tomatoes in your direction, and destroying your tomato garden. Video Idea: build small 3d-printable rockets with a compartment for the permanganate and the peroxide and make it so when you shake it, it mixes them, causing them to launch and fly away.

Material with highest heat resistant you could buy is graphite.... I dont find anything for 3D printing, but maybe you could use graphite rod for critical parts, shaping with lathe and combinate with 3d printed metal parts.

Have followed rocketry since the 1950s. Have two suggestions for cold rocket: 1) Although your injector worked, the reaction was not full. You can see the wave moving back and forth inside the engine, indicating poor/incomplete transition. 2) What you need is a combustion chamber of the right size and shape, fed by an injection plate designed to spray the proper percentages of t-stof and z-stof. You were using them 50/50, but the literature shows that a little bit of t-stof goes a long way. It's more like 10 to 1. 3) Eventually you're going to need a way to pump the fuel. The same stuff was used to power the turbine pumps in the V2 rocket. Print yourself a turbine and use the same fuel for both. 4) Have you ever heard of a rocket nozzle? You're going to need one. It's a nozzle that turns a spray into a roar. Have you ever noticed brass bands? They have bells too. Just for different reasons. But it's all the same. Just a matter of frequency. I love your stuff! Did you say you live in Texas? I also settled west of the Pecos, where there is no God. It's very odd, but I'm 69 years old, and you remind me of my father. He was always looking at me as if to say, "You could not be the product of my loins." I was, and now have all of his odd twitches and proclivities myself. Thanks. Peace,

A rather modest chap... " I am not a rocket expert of any kind"... And then spend the next 10 minutes proving that he does bloody will know a hell of a lot about rockets... So from where I stand I would describe him as a "drip under pressure"! Good on you!

Incorporate Tesla's one way valve on both inputs to prevent blow back on the injectors. This should also help to get all the pressure to exit out the nozzle end of the rocket.

Once you have a powerful and reliable engine, send a Tomato "to the edge of space", then detonate the rocket before it arrives. Show tomato who's boss

I will note, that a few successful ME163 flights occurred, with confirmed kills on allied bombers; who didn't understand what the hell was attacking them, out of nowhere, with no sound. that said, the design has a higher body-count of pilots, than enemy airmen. Turns out, flesh and 90% Hydrogen Peroxide do not mix well.

You can build two pressure vessels filling them with Hydrogen peroxide and potassium permanganate add compressed air. now you just have to open two valves to feed your rocket engine. An even better way is to coat ceramic beads or a metal mesh with the permanganate. This way you have less water (easier mixing and just one valve) and thus less weight.

4:22 "... I need to find another solution..." Classic chemistry humor there. 12:12 Given that your thumbs are holding the syringes in place, that is a measure of how much pressure the rocket is (currently) generating; viz, the rate of reaction will need to be increased by several orders of magnitude, probably to almost "explosive" levels.

Video idea: 3d printed gimbal for DSLR cameras Since you seem to love rotating forces, let's exploit their momentum. Build a gimbal with 2 rotating disks shifted by 90 degrees (X and Z axis active gyroscopic stabilization) and use their momentum to cancel the vibration induced by the camera operator.

"no tomatoes were harmed in the making of this video" -everyone disliked that I would like to see the thrust of your rocket engines tested in their ability to squish a tomato, or at least how damaged they would be if you put them in the direction of the exhaust.

You need to revisit this project. Add an aerospike at the end and a rotating detonation chamber inside, use 100% concentrated solution, and a high speed motor for injection and see what happens.

Make a 3D printed pelton turbine and drive it using height and water with a 3D printed nozzle!

I feel like you could i use a whole lot less permangante since it's a catalyst. It might make the output stream more consistent. Or even better find some way to hold it stationary instead of in a fluid? Like a mesh or honeycomb that the peroxide gets shot through. I have no idea how that would work but you're the engineer.

6:28 Integza : did you catch it kathrina? Kathrina with italians accent : yoaaa Lol

He should read up on how the Germans made the rocket for the ME163 comet. It would climb up to 25-30 thousand feet in only a few minutes. It was so dangerous the planes would sometimes blow up! But their concentration of the fuels were close to 100%. Damn! There are movies the Germans made of comet takeoffs and climb out to altitude. Very impressive for 1940’s technology. But the hydrogen peroxide was so dangerous that if you put your finger into a container with it, you would come away with just bone! No wonder they sometimes blew up! This guy is way to cavalier with these chemicals. Good thing his concentration was low, but the results were still impressive! Yes? Since the video was up and ready, I knew he didn’t kill or injure himself. He was totally surprised when he first mixed them.

I think a cool video would be using the Tesla “valve” in a water pump, it would be interesting to see how fast water could flow and if any pressure was able to be made.

That was super fun to watch, I'm so proud of your progress on building a rocket engine! That was awesome :3

Integza steals my heart everytime with his 3D printing prowess Hail Integza!

Safety third is a great burner phrase but still, safety first because you are a great person who makes us happy.

“I would definitely recommend the Ex&F discord.” Ah shit, I know where this is going!

VI: Once finished building an engine with decent thrust, attach it to a shopping cart. Ride it shouting slogans against tomatoes.

you need a checkvalve that stops backflow. also : do you know the double syringes that two-component glue comes in? a similar thing might help with putting out the two components in a good relation. then: the steam should contain a lot of oxygen. is it enough to be used in an "afterburner" ?

Project concept: Build a alcohol powered rocket, one that burns the water, alcohol, and sugar in it. This can be done by using electricity to break apart the water, then it is recombined and burned. Or you can maybe convert the water into a different compound. But as part of this, make it so that the alcohol and sugar found in beer or other alcoholic beverages is used as fuel as well.

Main idea for next video: try again with silver as a catalyst, but this time try to make a different shape (in X-15 plane, they used silver in a shape of a sieve (hope it was translated correctly), through which the peroxide was passed (hope that translated correctly as well)); Another idea: try and make the most efficient possible bell/aerospike nozzle for your rocket (a little bit of fluid mechanics). Nice video btw, I always love modern interpretations of old ideas!

I think that some thrust is escaping at the syringes making them harder to pump which is bad A one way valve should work This is where your old TESLA value would work

You should make the "combustion chamber" more compact In this way the steam would be released with a lot more of pressure (I don't know if this would work)

Me and a friend was talking about something, mostly saying that it had way too much head, and hardly any body. So we dumped our beers and ordered new ones.

Advice: RU-vid does NOT like swastikas in a preview image.

Yea like the idea of 3d printing a steam engine an I also recommend making a gas engine with 3 printed metal like the last video.

As schoolboy of the 1930's your experiments with potassium permanganate awakened some dormant memories. In those days of pre ball pens we had desks with inkwells. The potassium permanganate was known as Condy's crystals which you could buy dry at the local pharmacist. The effervescent properties were known well and used to play a trick on other classmates by adding a quite small amount to the liquid in the inkwell causing a quite violent reaction. I guess some of those young german kids remembered that too.

HTP ( high test peroxide) was used in two under wing rockets on a Lancaster bomber in 1946 at the Rocket propulsion establishment Westcott England. HTP is H2 O2 and decomposes into H20 ( water) and oxygen because of the heat generated the water is emitted as steam with the oxygen. You can add various combustible fuels into the exhaust to increase thrust. The danger of HTP is that if it is spilt onto any flammable material i.e. Wood clothing etc they will combust.

This is the best Episode so far. I can‘t wait to see more!

Video Ideas: 1. You could make a steam powered generator and for example put it into a electric rc car. 2. Put the steam engine into a plane and see if it powerful enough to move it. 3. Make a working speaker. 4. Try to recreate your earlier projects and see if you can improve on them.

Proyect idea: A few years ago I remember seeing a lot of potato launchers done with compressed air, you should definitely try a tomato launcher powered by this engine

Integza great video. When I was a kid I made a compressed air and water rocket for a science project. I bet you could make a powerful compressed-air water rocket. Thanks and keep em coming great work. Peace.

There are some hydrogen peroxide rocket cars. They are totally insane. They also use a fancy ceramic catalysts

Project Idea: Maybe try to make a "professional" water rocket before building a chemical one, something that would fly hundreds of meters, you could even test it with an aerospike nozzle (or hydrospike?)!. I think it would help you develop the final version of a chemical rocket.

idea : feeding the exhaust of this engine into a hybrid rocket core, using the oxygen from the reaction as the oxidizer, a sort of afterburner if you want (I have no idea if that would work ^^)

I read about the test pilots who tested the Heinkel and they said the worst part was landing it with fuel still in it. They said they would fly around until they were almost out of fuel before landing it as the fuel was so volatile, it would explode on landing.

Just a thing, one of the byproduct of this reaction is 3O2 gas. You can use it to burn a hybrid fuel so you get double the colume of gas and technically a lotta thrust if you make it H202 rich

Idea for a future video: you could use the expanding gas reaction to make a turbo jet. The turbine could be 3D printed because the reaction is cold. Then you have a spinning shaft down the middle of your rocket engine which you could use to run two separate compressors stacked on top of each other that pump the two chemicals in. All you’d have to do is like pull start the rocket engine and the compressors would pump the two liquids into the combustion chamber.

Suggestion for future videos: Try designing a working rocket engine with the knowledge you've collected. Then, or in another video, you build a rocket with the engine, which flies at least 1000 meters high and arrives safely on the ground. Would be very grateful for the 3d printer... I am also trying to develop a working rocket engine, allthough i am using steel for the parts.

I love the fact that he was wrong about the chemicals rarity, where KMnO4 is literally so easy to find, yet you will NEVER find H2O2 > 30% in concentration even for professionals if not rocket scientists

i'd like to see much more with this engine type, planes, rockets, steam engines whatever you feel like building the most, i'll certainly love to watch it!

design suggestion: why not trying solid KMnO4 as catalyst? like keep the solid powder in between 2 pieces of coffee filters then pass H2O2 through it.

It may help to create a “solid propellant” style lining with the KMnO4 and have the H2O2 flow through it but I would imagen the stream velocity through the lining would have to be somewhat high in order to keep the thrust in one direction ish

Landlord Note: Add to tenant contract “No building or testing rocket engines or chemistry experiments on the premises.”

I think it would be suuuper cool to se a part 2 of this video. A video where you upgrade the nozzle and syringes and where you measure the force generated by the rocket!! Thank you, Intzega!!

The future was right there in front of us all along-the carbon neutral rocket engine! We used potassium permanganate in high school chem, so it seems it’d be a pretty accessible substance to get hold of and tinker with (maybe we’ll see some DIY flying cars before we get to viable escape-velocity-achieving rockets).

Would love to see a piston or rotary engine made with these substances

Make a woodgas powered turbojet. This would use a burner to burn wood inside a sealed container, while the gas produced is collected and sent to the turbine. It will also work with paper inside the gasification chamber. At the end of the cycle, you'll have charcoal you can use.

I'd love to see the ultimate childhood train set where you get this set up functioning on a small scale and see how well you can make a miniature steam engine train.

You definitely need to team back up with Tom Stanton again and build a 3D printed plane around that rocket engine!

You could make an rc plane out of this engine design. First the engine needs to be more optimised, you could use 2 motors/pumps to accurately spray in the fuel mixture and optimise the percentage of each to give the most efficiency. The plane itself could be made out of foam or balsa wood frame and paper/cardboard with the servos and motors etc inside to make it controllable ish. Even just a 2 way plane would be controllable enough to test if it will work (maybe try and get in contact with Peter Sripol for help with that)

I really liked you saying dhanayavaad as an Indian I'm watching your videos from a long time and I am liking it I want become an engineer an your videos are building my interest in science so much so thanks love your videos bro keep it up

I'd love to see your take on some of the more interesting types of heat pumps. A sound based one is actually pretty cool and relatively easy to make once you get the concept down.

Design suggestion: use a Tesla valve on the intake lines; use a smaller "combustion" chamber. Tomatoes = rocket dummies!

Curious, when designing the nozzle do you just pick a geometry that looks good or do you actually use the equations to design a proper nozzle? Because I think if you continue with this project you should definitely make a proper one!

Integza the mechanic of the pump it's actually pretty simple first you drill a hole in the side but litle back not on the front, second cut the handle seal the back glue a hose to the hole conect it to an air pump release the presure on the hole you made

Obvious but still interesting video idea: Optimize the mixing mechanism to something a bit more advanced than two syringes. Seems like you are wasting a ton of material due to bad mixing. You could 3D print an injector that consists of many many tiny tubes so that rather than coming out of two large inputs, the compounds come out of several intermixed tubes for maximum mixture, and maximum thrust. You'd probably also need to go back to our good friend Tesla for some one way valves. You could also see if it would be possible to invent something like a hybrid pulse engine, where you let the steam pressure build up before releasing it in small bursts. Monopropellant based engines are super interesting, and they are extensively used in space for maneuvering thrusters, to make those final small adjustments for docking and such (although they usually use hydrazine, which is EXTREMELY toxic, still not as toxic as tomatoes).

You should print 3d printer with 3d printer. Obviously I'm joking you should try to make ion thruster it will be cool to see you make one.

Integza: "finally, something good came out of nazi research" The moon landing: "am I a joke to you?"

I'm really amazed that such an energetic reaction produces so little heat.

Crazy how an insane amount of peroxide just boils away at the smallest amount of permanganate. I was wondering, maybe you could try putting up an Ion Thruster of your own design to compete with your cold engine whenever you're done with the pump system! I think that'd be pretty nice. Thanks for the video!

Project idea: why don't you build a test stand, so that you can finally plot the thrust your engines produce?

you should try creating a "toy bazooka" that uses "compressed air rockets" to hit targets. should be pretty fun

Dhanyabad to you also! You teach us a lot!!! Love from India...❤❤❤

12:53 Meanwhile in the neighbors: "WE ARE GETTING SHOOT EVERYONE LAY DOWN" Old grandpa: WW2 FLASHBACKS

Hey Integza I was wondering if you could show a thermal image of the rocket in action so we can see how much heat is generated as it'd be incredibly interesting to see.

14:24 the genuine joy in his voice is just so wholesome

"Sugar rockets" (molten sucrose 40:60 with Potassium Nitrate) has a lower exhaust temperature than H2O2. Reaction generates lots of vapor.

You could, at the end of the year, make an epic montage of all the good and bad moments of your rocket engines from de past year

You should find what ratio stoichiometric mixture is so you can optimize the reaction. Of course, dont use exactly de stoichiometric mixture because probably is going to explode.

Dude, I am so pumped about this. I can't wait to see a complete standalone iteration. Keep it up man, I think you're really onto something with this one.

The hydrogen peroxide, decomposition rocket was what was used by the Bell rocket pack, the rocket pack had a bottle of approximately 90% hydrogen peroxide and a bottle of pressurized nitrogen to push the peroxide through the gas generator, which was a stainless steel container with a bunch of silver plates inside it, some articles state that the silver plates were coated with samarium nitrate

Video suggestion: A rocket powered RC boat or car would be kinda cool to see, using your new method.

Integza: “I 3d printed a rocket.” Me: Can I scale it enough to go farther than Sir Richard Branson into actual space?

Video idea: Make a 3D printed car with each of the interesting engines you built and once for all, settle which one is the best!

A Hydrogen Peroxide rocket engine was used in the Sanders Roe SR 177 Prototype which used woven silver metal pads in the nozzle to decompose the Hydrogen Peroxide, this engine was used to supplement the jet engine which was used for take off, landing, and cruising, the Hydrogen Peroxide rocket engine was to used for climbing to interception altitudes.