Bored Science: Home-Made Jet Engine

Submitted by: Tiredofnicks 6 years ago in Science

Sorta easy to make too I understand. Now class, how does this work?
There are 44 comments:
Male 1,397
As the guy said, it`s a pulse engine. Similar to the ones used on German V1`s. Extremely simple device. They actually used it on a small plane, instead of its propeller.
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Male 718
WOW look how HOT it got!!!!
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Male 3,076
HAHAH sweet!
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Female 3,598
wow... glowy :-D
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Male 464
It is technically a jet engine. You definetely havent worked on one if you dont know that.

Also, I wanna put bacon on that
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Male 85
i worked on jet engines, and that`s definitely not not one.
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Female 192
I bet it`s super loud...
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Male 239
Brilliant... until metal fatigue kicks in and the damn thing explodes. Does it still count as an air intake when flames are shooting out of it?
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Female 3,001
i laughed at the `do not touch` speech bubble XD
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Male 2,553
Oooooh, cool lamp...
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Male 881
I`m going to live in his camp when the zombie apocalypse happens.
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Male 3,061
bet it would look a lot sweeter if the lights were turned off.
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Male 4,793
God I was just waiting for welds and stress points to fail due to melting. Ka-Boom!
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Male 761
that cant be safe
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Male 1,108
[quote"> If this was in Florida it would have been strapped to a shopping cart with a person inside ready to ride it. [/quote">

Better yet, here`s one powering a go kart.
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Male 105
NASA called, they want their redneck back...
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Male 12,365
[quote]Its amazing that something like this was groundbreaking 90 something years ago[/quote]

Less than that. The first working jet engines were built in the late 1930s. Engines, plural, because it was invented independently by two different people at about the same time (one in England, one in Germany).
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Male 174
satans answer to the energy efficient lightbulb
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Male 310
Its amazing that something like this was groundbreaking 90 something years ago, and now we can make it in a garage with some mechanical training (although I don`t know exactly how smart/trianed these guys are)
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Male 15,510
How to make the most noisy oven in the world
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Male 1,598
that looks just a little bit dangerous...
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Male 37,794
DO WANT!
wantwantwantwantwant!
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Male 1,378
where`s the carb on this thing?
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Male 256
mcfudge I agree with the IR, I`ve seen these before, a simple google will show them. :)
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Male 537
@EntrE; Yes, it is a jet engine. It is a valveless pulse jet. I buit one out of exhaust tubing for my senoir project in high school. One that size probably delivers around 15lbs of thrust.

It is hot, but not as hot as it looks in the video. When metal heats up, it creates infrared light (as well as light in the spectrum we see), which is seen by the camera. In all reality, they barely glow, the most you can see in person is a little red around the forward part if the expansion chamber.
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Female 535
Do not touch.

lawl
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Male 426
uhhh no explosion... sucky! that thing was hot as poo
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Male 58
@EntrE, different type of jet engine called a pulse jet engine, still a jet engine smart arse
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Male 535
this is not a jet engine!!! jet engines have rotor blades and all kinds of poo!
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Male 1,929
poo-the-bed that`s hot.
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Male 38,483

where is the rest of the video?
the part where it blows up.
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Male 102
If this was in Florida it would have been strapped to a shopping cart with a person inside ready to ride it.
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Male 308
@volsunga: Agreed... 30 - 50 lb`s of thrust is all this thing puts out, yet it blows fire from BOTH exhaust and intake while turning white hot???? What a peice of homemade crap... I couldn`t do it though :)
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Male 1,505
No explosions or spectacular fireballs? I`m a little disappointed.
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Male 6,694
Suck,Bang,Blow.
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Male 6,694
Pulse jets are cool.
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Male 1,548
This is one of the worst homemade jet engines I`ve seen on the internet. No proper engine should lose that much energy to heating the housing, and no housing should get white-hot during normal operation.
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Male 25,416
Thats insane, i love the glowing red!
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Male 409
There are flames in the intake because it is closer to the explosion, by the time it exits the longer pipe all of the oxygen is consumed, thus, no flame.

It gets hot because it is hundreds of explosions per minute. That is a lot of heat. The long pipe especially because the heat goes into the pipe, not the air, as it does with the shorter pipe.
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Male 409
I remember they made one of these on Junkyard Wars. It didn`t do too well, and almost exploded.

It works by air being sucked into the shorter pipe, where it ignites with the fuel. The exhaust from the explosion exits through both pipes, resulting in a vacuum. Because one pipe is so short, oxygen is pulled in through the short pipe to feed the next explosion, resulting in a pulsing stream of explosions. The exhaust in the long pipe is pushed along by the next explosion, and the next, resulting in thrust.
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Male 10,440
I don`t get it... why are there flames coming out of the intake?

Also, why does it look like it`s going to melt?

Perhaps those two questions have the same answer.
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Male 85
Dude, seriously? Theres like 1,000 videos like this on youtube. iab needs to be more careful of who their uploaders are.
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Male 620
"Now class, how does this work?"

Suck, Squeeze, Burn and Blow.
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Male 5,094
Link: Bored Science: Home-Made Jet Engine [Rate Link] - Sorta easy to make too I understand. Now class, how does this work?
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