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ITT: Lets design a fucking jet engine

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Thread replies: 78
Thread images: 19

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I have a simple basemesh for a jet engine in a 3d rendering program for designing. You guys tell me what to add, what to fix, etc, and we will design a plausible jet engine that could work(In theory, of course).
>>
>>52607952
make the blades flat
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>>
Add a raccoon behind the spiky thing. It'll help./ Trust me.
>>
>>52607952
>tfw no turbine electric hybrid cars
>>
make it run gentoo
>>
>>52607960
Whats do you mean by flat? As in scale them down on the x axis?
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>>52607952
Add a supercharger driven by the spinning of the turbine so we get MORE COMPRESSION.
>>
>>52607952
Bolt on a V16 combustion engine that drives gears that drive those other gears on the left.

IT WILL MAKE IT SPIN QUICKER. MORE QUICKER SPIN = MORE QUICKER SPEED.
>>
>>52607983
No twist over the length of the blade.
>>
GET HUGE FUCKING DILDO SHOVE INTO THE ENGINE AND THEN THERE YOU GO ITS LIKE KABOOM WERE ON NASA
>>
>>52607952
give it popup headlights like a miata.

and a massive rear spoiler to keep the rear end down so we get maximum lift.
>>
>>52607999
OP barely knows what a stator is, so I'm just going to sit back and watch.

t. aerospace engineer
>>
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>>52608031
>>52607960
The first edit is made
>>
>>52608054
how about you listen to the actually good suggestions instead of the silly guy.
>>
Make it face backwards
>>
>>52608052
>implying you're an aerospace engineer
You dense motherfucker how can you not see the rotary system?
>>
CONVERT IT TO A WANKEL.
>>
>>52608054
That shit looks lame

Paint some flames on it
>>
>>52608075
didn't even open the picture up desu
>>
>>52608054
make it a 4 blade turbine on the hp and lp side.
>>
>>52608054
twin turbo it
>>
>>52608054
IIRC if there's not enough clearance between the edge of the blade and the shell, the blades can stretch and slam against the edge.
But to calculate that right we need diameter, RPM, and stress/strain curves, and for that we need material. Is this, like, 7075 aluminum or something else?
>>
>>52607952
Have you addressed the problem of thrust reversal during startup?
>>
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>>52608047
Pop up lights added, they look bad but you can see them in red. I have to model and render fast to keep up with the thread.
Im debating whether or not to add a rear end spoiler, since the jet's wings would account for lift
>>
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>>52608152
>making a turbine out of aluminum.
>>
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Do we have fuel injectors for those things which I presume are combustion chambers?
>>
>>52608170
add racing stripes to the center part of the shaft
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>>52608152
Blades scaled down on Z axis for adequate room in the shell
>>
What software are you using OP?
>>
>>52608054
The compression zone gets smaller as the pressure gets higher. Add stator vanes to housing. Get rid of that gay shit infront of the first compressor stage. You need to add a starter somewhere. Unflaten the compressor and turbine blades. That's retarded.
>>
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>>52608174
Cool, I learned something today.
This is inconel 718
>>
Add two spherical coolant tanks at the end of it on opposite sides of the cylinder
>>
>>52607952
-1000000000000000000000000000000000/10

Compressor blades won't even compress the air, combustion chamber is blocked, turbine is ARE YOU FUCKING KIDDING ME? This is the worst jet engine design I have ever seen. PERIOD. Do you even know what the brayton cycle is?

You are a probably a 3d modeler who thinks they are an engineer. Please kill yourself before you kill other people.
>>
>>52608152
>7075 aluminum
> in an engine
> spinning at 10k RPM +
> in an engine
> what is creep
Single crystal blades.

You'll also need to add boundary layer cooling to the blade which I doubt OP even knows where to start after seeing >>52608170
>>
>>52608170
You need to redirect some of the HP air from th 5th compressor stage into the jet pipe, or your turbine will melt.
>>
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>>52608197
Shit nigga i almost forgot

The injectors are in blue, they are poorly modeled and look shitty, but remember I am trying to keep up with the speed of the thread
>>
>>52608197

Are we doing a toroidal combustion chamber, of separate cans?
>>
>>52608244

There is literally no need to be an ass, the engine is just a design and is a work in progress
>>
>>52608218
OP what are you using
>>
>>52607970
There's like a million spiky things in a jet engine anon, you gotta be specific.
>>
>>52608244
topkek.

I know a 3D modeler who thinks they're an engineer. It's scary as fuck to see they things they draw.
>>
>>52608292
Literally what program are you using.

A self-respecting engineer would use Catia or Pro-Engineer, and a mentally retarded engineer might use Solid Works. You're using none of these. What is it.
>>
>>52608244
kek this, I didn't even notice it

why is the shaft so long? why are the combustion pots also so long in addition to the above?
>>
>>52608245
>boundary layer cooling

Only on the turbine blades. Also, the blades should be allowed to move slightly to allow for vibration damping.
>>
>>52608314
>/g/ designs a jet engine in blender
>still the best thread I've seen all week
>>
>>52608314
Do you think op really has access to catia or ProE?
>>
>all this fucking grain
Yeah, that's Blender all right.
>>
>>52608356
Have you heard of torrents? Really, check them out
>>
This thread is funny.
>>
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Gas turbine blades tend to be way closer together / kinda overlayed. In pic related there are 14 visible from a 1/4 cutout, vs 7 in your 1/2 cutout model, so I guess 4x? and rotate a little, they shouldn't be flat
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Stator vanes added, although they arent very noticeable. "Gay shit" up front has been removed
>>
>>52608453
where are my coolant tanks
>>
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Starter has been added but its a bit big.

>>52608464
Working on them
>>
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>>52608464
Coolant tanks are done, I was a bit confused where they should go since I didn't want to them to interfere with the combustion cycle. So I created a pipe system.
>>
I don't really know what else to add, as I'm not an aerospace eng. More valves and pipes?
>>
>>52608517
So if I understand how a jet engine works correctly, the blades in the rear are a turbine that recovers exhaust gas energy and delivers it to the propeller in the front that draws in fresh air to be combusted. Is this correct?

If so, I vote to use a Tesla turbine to drive a scroll pump. Also a pair of V-belts in double shear for power transmission rather than the driveshaft.
>>
>>52608656
Yeah, I figure I should add more valves and pipes for the coolant system and the fuel system.

Thread is dying, but it was a good run tbqh senpai, arguably the least boring/gay thread on /g/ in a long time
>>
>>52608656
I second this. More valves and pipes sounds helpful and will definitely improve the current design a lot.
>>
>>52608656
don't forget the horn
>>
>>52608686
Lel no. The blades at the front are part of a combustion cycle, which intake air and deliver it to the combustion chambers, which then combusts fuel and the intake air which are delivered out via the rear turbines. This creates thrust.

I'm not necessarily sober rn so that definition might be a little wonky, but either way I don't think there is enough room for v-belts in the shell
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>>52608686
Fucking hipster MechEs.
>>
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>>52608735
>The blades at the front are part of a combustion cycle, which intake air and deliver it to the combustion chambers
Yeah, that's what I said.

>>52608743
It's called British Engineering. It's glorious.
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>>52607952
make the blades bionic
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Thread is officially kill, since the last two replies were about 30 mins apart from each other, maybe we can work on the engine again tomorrow. Goodnight my negroes
>>
Check out @02:51

https://www.youtube.com/watch?v=KjiUUJdPGX0
>>
>>52607952
Remove the bezels that's technology today
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>>52608218
he's using blender; obvious cycles renders on these.
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>>52608274
You need to add a combustion chamber with flame holders.
>>
>>52609089
Thread has been resurrected.
>>
Have you tried adding a thing that will make it fly? Let's all research quantum mechanics until we make conscious teleportation real. Let's do it.
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Turn it into a whistle
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>>52608233
Grade 11 or higher titanium bro
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>3 hours in
>no logo
>>
>>52610298
welcome to neo-/g/
>>
>>52607952
Give it a ballsack
>>
>>52610298
i got you bruh
Thread posts: 78
Thread images: 19


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