I'm a fitter & turner (by trade), but specialized in plastics injection mould making. I don't use the trade much these days. However in all of my years I'd never seen how metal was spun - I'd heard about it, but had never seen it. Thanks for the video!
See, space-age technology doesn't have to be all titanium and 3D Printing. This is great work for lowering launch costs. Being able to churn out a rocket engine body every minute at even this scale is some serious manufacturing capability and capacity for creating launch vessel parts. Very nice!
@@among-us-99999 I think you're thinking about aluminium. Solid rocket fuel has aluminium powder added to make it more energetic. But yes, titanium alloys are in fact used. The XLR81, an engine in the Agena upper stage, had a titanium nozzle extension; the turbopump impellers for cryogenic hydrogen in various makes and models of rockets are often made from titanium, an early SpaceX engine (the Kestrel) had a heat exchanger part made from titanium, and various other parts in rocketry and space exploration are made from it, too, due to its cost-saving weight advantage over materials like steel.
We cut the outer shell in two, and weld it back together: facebook.com/CopenhagenSuborbitals/photos/pb.150360881653453.-2207520000.1426770324./896618273694373/?type=3&theater
How do you get the inner wall inside the outer wall if you form them separately? Do you weld the outer wall around the inner wall? Or are you forming the two walls at the same time here?
Good spinning... but how did you get to the seamless cylinder in the first place? It doesn't look like you've welded a metal sheet and polished the welding marks off.. is there another way?
@@marmaladekamikaze is that where you just walk up to the sheet of metal with so much swagger it just complies with your wishes and becomes a solid pipe?
99% positive it's an Inconel alloy. One of the few metals out there that can withstand white hot heat and still maintain structural integrity without oxidizing.
Printing stuff at this scale is prohibitively expensive. SpaceX can afford the tools, the software, the machines, the manpower behind additive manufacturing of rocket engines, something unthinkable at C-Sub-level of available funding. All the more laudable are therefore the efforts and solutions C-Sub can and do employ to make it work without.
A thin layer of metal powder in an inert atmosphere is deposited onto the bottom plate, then a laser draws across it, melting the powder where it hits, tracing the contours and scanning the filling areas. This process repeats until the part is finished. It works great and has still massive potential for improvement, especially for scaling up.
Have you guys ever considered just bolting a casing together that shrouds the combuster ? , also he is going way to fast , tell hi to reduce his speed 90 % , . kinda like an egg in an egg carton is the way im thinking , the egg is the combuster and the outer cooling jacket is just a crappy carton bolted together with no brazing , this allows inspection the hole 9 , . Contact me for details if your unsure Optimizedprcllc@gmail.com
This is a fairly old video, so since then we've went for different manufacturing techniques for our engines and have now reliably manufactured, tested and even flown many of them with great reliability. If I understand your bolting design correctly then it would definitely not work. You need to to have the two liners brazed together, otherwise the heat and high pressure of fuel traveling between them will split them apart. It's something we've seen happen multiple times and is one of the bigger challenges in a biliquid rocket engine. But thanks for reaching out nonetheless.
I'm a fitter & turner (by trade), but specialized in plastics injection mould making. I don't use the trade much these days. However in all of my years I'd never seen how metal was spun - I'd heard about it, but had never seen it. Thanks for the video!
Yes. Great vid!
See, space-age technology doesn't have to be all titanium and 3D Printing. This is great work for lowering launch costs. Being able to churn out a rocket engine body every minute at even this scale is some serious manufacturing capability and capacity for creating launch vessel parts. Very nice!
Anvilshock is it even possible to use titanium for rocket motors?
Titanium is a very nice component of solid rocket fuel mixtures..
@@among-us-99999 I think you're thinking about aluminium. Solid rocket fuel has aluminium powder added to make it more energetic. But yes, titanium alloys are in fact used. The XLR81, an engine in the Agena upper stage, had a titanium nozzle extension; the turbopump impellers for cryogenic hydrogen in various makes and models of rockets are often made from titanium, an early SpaceX engine (the Kestrel) had a heat exchanger part made from titanium, and various other parts in rocketry and space exploration are made from it, too, due to its cost-saving weight advantage over materials like steel.
I mean, titanium would be a very bad choice in an _oxidising_ environment. That stuff burns like magnesium, if not worse.
@@among-us-99999 That it does. Luckily, not all environments in the general vicinity of a running rocket engine are oxidising.
Simply Fantastic, I wish you all the success!
I’d pay serious money for this service
Success!
Siempre pensé ,como se fabrican las toberas ... gracias amigos..
Satisfying to watch! #thumbsup
Is this the inner shell or the outer shell? How do you assembly them together afterwards?
We cut the outer shell in two, and weld it back together:
facebook.com/CopenhagenSuborbitals/photos/pb.150360881653453.-2207520000.1426770324./896618273694373/?type=3&theater
Super informativ video :)
How do you get the inner wall inside the outer wall if you form them separately? Do you weld the outer wall around the inner wall? Or are you forming the two walls at the same time here?
I have a small question . Here why don’t use Lathe Machines for shaping.
Good spinning... but how did you get to the seamless cylinder in the first place? It doesn't look like you've welded a metal sheet and polished the welding marks off.. is there another way?
Swaging is one way,
@@marmaladekamikaze is that where you just walk up to the sheet of metal with so much swagger it just complies with your wishes and becomes a solid pipe?
Cool
Why not make the material clad. copper on the inner, tin followed by a steel outer? Roll them together. Melt the tin.
Hi Sarah.
That might actully be a good idea. We'll see if we can use it at a later stage. Thanks for the input!
y name is Adam, This is my wife's channel. I would love to help. Could I make something for you?
Jack Meadows that could be useful for later interplanetary missions.
What metal alloy are you using?
Probably Inconel.
@@TheExplosiveGuy its stainless
which material is this
me and my bud are going to build this kind a engine
What a professional work! If it's not a secret - which type of steel did you use for that part?
stainless steel probably
304L Stainless steel.
Did he just grease the tube with his sleeve!?
Does anyone know why the combustion chamber is so much bigger than the exit nozzle part
it has to do with combustion pressures, the lower the combustion pressure, the bigger the combustion chamber is in comparison to the nozzle.
This is in the do not try this at home class of metal working.
What is that material? (Work piece)
99% positive it's an Inconel alloy. One of the few metals out there that can withstand white hot heat and still maintain structural integrity without oxidizing.
@@TheExplosiveGuy thank you mark
Is stainless steel
What process is it?
Have you considered 3D printing these? Obviously I have no idea the budget, but SpaceX is printing seamless parts in Inconel even...
Printing stuff at this scale is prohibitively expensive. SpaceX can afford the tools, the software, the machines, the manpower behind additive manufacturing of rocket engines, something unthinkable at C-Sub-level of available funding. All the more laudable are therefore the efforts and solutions C-Sub can and do employ to make it work without.
i don't know how 3d printing metal works, but it doesn't sound like a good idea.
A thin layer of metal powder in an inert atmosphere is deposited onto the bottom plate, then a laser draws across it, melting the powder where it hits, tracing the contours and scanning the filling areas. This process repeats until the part is finished. It works great and has still massive potential for improvement, especially for scaling up.
Have you guys ever considered just bolting a casing together that shrouds the combuster ? , also he is going way to fast , tell hi to reduce his speed 90 % , .
kinda like an egg in an egg carton is the way im thinking , the egg is the combuster and the outer cooling jacket is just a crappy carton bolted together with no brazing , this allows inspection the hole 9 , . Contact me for details if your unsure Optimizedprcllc@gmail.com
This is a fairly old video, so since then we've went for different manufacturing techniques for our engines and have now reliably manufactured, tested and even flown many of them with great reliability. If I understand your bolting design correctly then it would definitely not work. You need to to have the two liners brazed together, otherwise the heat and high pressure of fuel traveling between them will split them apart. It's something we've seen happen multiple times and is one of the bigger challenges in a biliquid rocket engine. But thanks for reaching out nonetheless.