💎💎💎 🚀Wait for it... Blue Mach diamonds on a LOX/Kerosene 3D printed liquid rocket engine

Blue Mach diamonds are not just for methane engines. Our kerosene / liquid oxygen 🚀 engine has them too thanks to Its 98%+ C* efficiency.
3D printed in copper alloy on @EOSGmbH M290 by @3T_am_ltd
Engine: Launcher E1-LOXCOOL725
Regen cooling: liquid oxygen
Propellants: LOX/Rp-1
Pressure: 588 psi
O/F Mix ratio: 2.4
C* Efficiency: 98%
Duration: 25s
Post-test inspection: No melting or damage to the injector or combustion chamber

[@stevefink6000]

By far the best diamonds Ive seen by any enthusiat out there. Sweet!

[@Jose.LQ6]

blue flames from RP-1? that's hot! No really, that's hot af

[@greentea1396]

very hot indeed

[@mmb3006]

3600k hot

[@floydjohnson7888]

The parts were 3-d printed in a copper alloy, and held together after that test firing. I am impressed.

[@spencer6104]

that’s damn impressive.

[@darrelldawson4041]

That's absolutely beautiful! Brilliant work and precision!

[@bensas42]

That looks absolutely gorgeous!!

[@aerospacefuzz]

Great job!

[@pyrusrex2882]

WOW. I didn't know you could get pure blue mach diamonds on a kerolox engine. You can see them faintly on the very end of an RD 180 plume, but you always have that yellow blackbody stuff nearest the nozzle. I've only ever seen this on kerosene/peroxide engines. FUUUCCK YEAH

[@Jose.LQ6]

Maybe they can do a near perfect lox/rp-1 ratio because they use lox for regen cooling instead of "warm" rp-1

[@mmb3006]

The blue comes from the copper burning as the chamber temperature is 3600k you don't see it in most kerolox engines as they burn fuel rich and not at the perfect mixture and the chamber temperature is usually around 3000k

[@mmb3006]

@@Jose.LQ6 No actually it's all about heat transfer lox has a worse heat transfer than rp1 the reason they can burn at such an efficient o/f ratio is because it's a staged closed cycle which produces high pressure and allows for a fast flow of lox through the chamber walls which allows for a better heat transfer and better cooling

[@spencer6104]

@@mmb3006which equals mo powah

[@tinkmarshino]

oh yeah baby! I have seen some of your other vids on other places but those were older.. now your cooking! Love it..carry on!!!

[@BugRib]

Pretty!

[@CanineDefenseTechnologies]

Beutiful!!!!!

[@johnstrickland3373]

awesome, congrats

[@pedrocorreanetope9717]

very good cooling system

[@frankmccann29]

Used to watch A3 J's from Sanford NAS fly over the pasture and kick in everything. Multiple rings like B-58. Yeah, it was a German rocket that hit space fueled on lox and alcohol. This is an interesting site, comprehensive and informative. Ceramic superstructure and nozzles might allow neat specific impulse? Bucky balls plastics?

[@tack9571]

Those mach diamonds are really nice

[@dhargarten]

What improvements did you have to make to get to these high c* efficiency values?

[@StreuB1]

Better atomization and mixing of the propellants and run closer to stoichiometric. Fuel rich is always preferred as it allows for some film cooling and lessens radiant heat transfer to the walls a bit. Once you eat up all that carbon and then the hydrogen, there is little else to scavenge the free oxygen to prevent it from attacking the combustion chamber walls. The trick is to keep the walls well below the temperature where the oxygen sees it as a fuel source. Thats easy to do on paper, hard to do in practice due to slight deviations and fluctuations in propellant mass flux during operation. These perturbations can cause transient excursions into the oxidizer rich region which can go sideways very very fast. Thats why people usually stay away from it by about 5% fuel rich. That gives you some cushion to absorb those fluctuations and still stay on the fuel rich side. Scavenging up all the oxygen very very quickly by getting very good O/F mixing early on in the combustion cycle though is a very effective way of assuring you have no free oxygen running around to cause havoc. Easier said that done though but thats why the injector is the heart of a rocket engine. Its where your performance can be made or lost and where combustion instabilities can suddenly arise and make your good day, very bad indeed.

[@mayurholla6509]

Brian Streufert how do you know all this stuff

[@StreuB1]

@@mayurholla6509 I design, build, and test rocket engines as well as rockets. I will add a addendum to my above comment. There are some propellant combinations that you run far more fuel rich than 5%. Hydrogen/oxygen being one of them. Hydrogen, especially hot hydrogen, is an especially good working fluid and you actually get better c* by using excess hydrogen that doesn't even take part in the combustion process.

[@flippert0]

@@StreuB1 Very informative, thanks!

[@fask69]

@@StreuB1 bro what are your graduation? i wanna know stuff just liek yiu do

[@aavkashyaan7187]

Amazing shock dimonds, can you suggest me which equation you used for design a nozzle?

[@SupernovaSpence]

Equations for nozzle design are available on the NASA website. Do a google search.

[@vishalk4647]

Method of characteristics might help you

[@T11235]

The noozle is a de laval one

[@NREYTERYREYTY5fddffsfdf]

Omg it look like a mini raptor engine lol

[@papakrakazyabrika]

👍👍👍

[@absinthe6869]

At first, I thought that the engine actually runs on methane. and you misunderstood that it uses rp-1 and then I found out that it's launcher's official channel so it can't be wrong

[@RENO_K]

How did you achieve that blue flame, I'm a assuming running lean (it looks better than space x's merlin engine btw, the blue flame is so cool

[@imjustatool9247]

That one kid in the lobby:

[@CarlTheAviator]

Epic

[@cheesegrease8247]

calming white noise

[@theredstonehive]

Almost purple!

[@arielanibalpastura8137]

Combustión completa...quema muy bien saludos desde mar del plata ARGENTINA 🖐🖐🇦🇷🇦🇷

[@vipinvikraman5074]

Can you tell whether Engine prechilling using LOX is done or not?

[@jonv.6213]

3D PRINTED ROCKET ENGINES?! We really are living in the future

[@GooseCrack]

Wow

[@vladislavovi44]

Is that and under expanded nozzle? Looks abit like over expanded one.

[@RUD_Technologies]

by the blue flame made by kerosene I think that that is a very good combustion

[@manvirsingh3727]

Can you tell me what's the pressure inside combustion chamber

[@peterzhao3387]

what kind of injector did you use for such great atomizations?

[@95TBake]

Probably something, made of high high grade supper alloys, beyond anything average man can machine, without using ITAR government classified machine tools to cut metal, and before you ask there are CNC machines and tools, bits that are classified as ITAR and are restricted by the federal government... that's how serious the aerospace industry is...

[@thecrudelab3204]

so is the goal to get the pressure diamonds? since they're caused by the exhaust's pressure being less than atmospheric pressure, and the best thrust is from the exhaust's pressure being equal to the atmospheric pressure right? idk

[@Calypso993]

how would you cool with Liquid oxygen?

[@jonslab9635]

how much did this cost in total?

[@mauriciolima1088]

i am looking RESPECTFULLY

[@khairulpenyu1657]

That's like bifrost in Thor film

[@eliyasne9695]

Do you burn it oxygen rich?

[@ss-sq1hn]

what are those beads

[@MR-oj2yi]

this engiene have a gas generator?

[@benjaminbrown3939]

That must be a high oxidizer ratio to get such a blue flame out of RP-1, which typically produces an orange or yellow flame.

[@janetsbrick]

My thought as well. I’m used to seeing Mach diamonds with low or zero carbon fuels. The bright yellow flame from RP-1 is normally overwhelming.

[@mmb3006]

I think they use an o/f ratio of 2.64 and the chamber temperature is 3600k so the copper slowly melts away burning blue and since the combustion is so efficient the soot remaining is quite low

[@Bellabong]

@@mmb3006 Second time you've said copper burns blue. It doesn't. It burns green.

[@mmb3006]

@@Bellabong ye so in certain cases it does burn green youve probably seen it with the raptor engine so in the case of raptor SN8 had its fuel supply cutoff so the engined were pretty much burning not fuel and oxygen but copper and oxygen the copper oxidized and melted in this case copper does not oxidize it literally just gasifies which is blue you can also see this happen un the case of the BE-4 engine from blue origin as their plume is blue also if you ever had chemistry class and had the expiriment where you would burn salts like calcium and in this case copper you could see that it burned blue

[@mmb3006]

@@Bellabong and if you don't believe me google it

[@robbiejames1540]

This is amazing, mostly in that im astonished the engine isn't melting! However, while this gets great C* efficiency, will this give you the best Isp - I always thought that the reason kerosene-Lox rockets have the orange exhaust is that they deliberately burn off-peak, as the extra weight of Lox needed outweighs the efficiency increase?

[@quinnreierson]

Generally engines don’t burn at the perfect ratios because the high temperatures can lead to engine rich exhaust-I would assume the closer the combustion is to stoichiometric ratios, the higher the efficiency.

[@DavidHernandez-kc1el]

nerd

[@mage3690]

@@DavidHernandez-kc1el not a nerd, just smarter than you.

[@sebdapleb1523]

@@mage3690 same thing tho?

[@mage3690]

@@sebdapleb1523 so if we define a nerd as "anyone smarter than some random person on the internet", does that not, by definition, mean that anyone smarter than an 8 year old who just figured out yesterday that you can fake birthdays with a gmail account to comment on public forums like this is also a nerd? Which means that, by reduction, you are also a nerd--unless you're dumber than an 8 year old who just discovered that he can lie to a machine. And this is assuming that bots don't count as "some random person on the internet". A literal ant could be classed as "genius" compared to those things.

[@DarkTheFailure]

Looks like a mini raptor engine

[@petterlarsson7257]

the diamonds look like an inverted version of the nozzle

[@grandoceaniclinesrblx8772]

diamonds might look cool but that pattern of plume basically says it isn’t efficient

[@PearceArmoury]

Could print an Aerospike for me?

[@thegregofficial]

Integza should take notes from you

[@aavkashyaan7187]

What is the chmaber pressure value of this engine?

[@mmb3006]

Not stated but since it's a closed staged cycle its quite high

[@larshaas2658]

Hey launcher, i think you guys aren't really the people to take requests since you have a goal and this costs tons of money. But would you maybe be willing to test a small scale bipropellant liquid rocket engine consisting of T-stoff and C-stoff? As an avid ww2 enthusiast i would really want to know what it sounds and looks like!

[@Pedro8k]

Did well for a long burn and did not blow up

[@viswanath7168]

How to make that

[@Varticity]

Looks like the Raptor Engine but smaller

[@SevenDeMagnus]

Nice, so beautiful, I wish you could put that in resin. How do you replicate that with a blowtorch?

[@Anonymous-ee8ef]

You can’t the diamonds you see are because the exhaust is lower pressure then the air around it and it is going supersonic

[@call_me_mado5987]

How the hell did the nozzle not even melt a little?

[@vedha_space]

Come on!

[@williamstock3007]

Is the kerosene at cryo temps?

[@android-er9fg]

nope

[@prolska]

@@android-er9fg wrong check the channel

[@targetz3843]

*The rotation speed of the earth has increased to 0.000003 percent*

[@Ameliaross106]

Nice Mach diamonds

[@petterlarsson7257]

you can really see how the ice melts away from the nozzle immediately

[@LingXiao.Z]

bring me a cuban cigar

[@BenBen-kh1dm]

Each diamond means 500 mph

[@themadscientest]

Will it fit in the back of a station wagon?

[@benjaminbrown3939]

No. You need large fuel tanks.

[@lucaxdls]

how much thrust does the engine produce?

[@Aceb_k]

Since this engine is a bit smaller than the futhiford engine i would say roughly 10kn.

[@buffaloc20]

@@Aceb_k rutherford*

[@Aceb_k]

@@buffaloc20 I was stupid 5 months ago😂

[@aerojetrocketdyners-2538]

2.4kN, the CEO in one of his interviews.

[@lucaxdls]

@@aerojetrocketdyners-2538 wow since I have an PhD in KSP I would assume this isnt very much.. hoped for atleast 10kn

[@SFSECO]

Sir please 🥺 explain how to make this rocket engine for rocket .

[@aksh_x_]

crack IIT study Aerospace Engineering for 3 years. After graduation form a team. Then think of doing this. It's not your diwali wala rocket.

[@SFSECO]

@@aksh_x_ sir i am 12 years old and i am not made the diwali wala rocket 😠😠😠😠 and i have always a team and my team and me study on rocket science and about space,rocket and more about science so thanks for replied after 1month So you have don't share the process of making the rocket🚀🚀engine so 🙏🙏Thanks 🙏🙏 😤😤😤

[@aksh_x_]

@@SFSECO The craze you've for rockets is really cool! I appreciate it but to get there you need to be master of the basics. Once you know all the math and physics And chemistry behind it then you've to use your brain And create different designs, check the calculations, see the simulation graphs, make changes And then test it. And rocket science is all about thinking what can go wrong the actual fun is only 1% that's when you test it. If any calculation went wrong in the test you saw in the video, then there could have been an explosion and loss of life sometimes plus all money invested in it turns out to be a waste. So final advice- Go study the actual Math and Science behind it, just by watching videos you can't do anything.

[@SFSECO]

@@aksh_x_ Sir thanks for your advice and this is my gaming Channel because me and my friends interest in space and I have going nasa 🚀🚀🚀 in the feuture so thanks for you advice 🙋🙋🙋

[@SFSECO]

You are a aerospace engneer in which space center ???

[@user-lz1ov4fs2k]

Where is the Max-Q attitude?

[@METABOT]

Haha this is a mini raptor engine

[@chicken_nugget5438]

Not a rocket scientist, but aren't mach diamonds a sign of inefficiency? I thought it was caused by under-expansion.

[@charliejaxon4707]

Chicken_Nugget5 yeah they are a sign of inefficiency at sea level. Most professional engines over expand the nozzle so it works at peak performance higher in the atmosphere where it spends most of its time. :)

[@RafaelSantos-tu1yx]

Amaterasu

[@shannonnicollechannel5884]

What is the point of this?

[@Comet-2011-W3-Lovejoy]

To blast you out of the airlock

[@hectorjuncal2312]

Diamonds are a bad sign, efficiency lost

[@xa-xii4865]

I wanna stick a GoPro into the exhaust to see what it does... I have a strong urge to do that but I can't afford a GoPro!!!

[@benjaminbrown3939]

Don't. It's a waste of a gopro

[@aerojetrocketdyners-2538]

sure, assuming it can survive 3400K.

[@ScienceRules118]

The bigger source of damage for a GoPro pushed into the exhaust of a rocket would actually be the fact that the exhaust is exiting the engine at several kilometers per second - thus, you’d be sticking the GoPro into Mach 10+ exhaust, which would destroy the GoPro and it’s mount in short order.

[@GHOSTGXZ]

How many times have you been in court

[@android-er9fg]

Gasoline also will work very well.

[@buffaloc20]

Ethan Ng kerosene is refined gasoline for rocket s

[@a64738]

@@buffaloc20 kerosene and gasoline is very different fuels... If you ever accidentally filled your gasoline car with kerosene you would experience it yourself ;) (friend of mine did it on a moped, it did run poorly for a while and would not restart again until he had replaced it with gasoline). Kerosene and diesel both has much much lower octane number then gasoline.

[@benjaminbrown3939]

Gas is too dangerous and unstable. It contains fumes, and those will ignite explosively at any spark.

[@MarlonMuthiani]

mark diamonds are signs of in effficiency in combastion

[@antonpershin998]

No, they are sign of overexpansion.

[@prolska]

@@antonpershin998 its underexpansion not overexpansion

[@antonpershin998]

@@prolska no

[@prolska]

@@antonpershin998 explain it

[@prolska]

@@antonpershin998 do you know whats the definition of 'under'? Then explain it to me