I love the safety sandals shown at the 6:32 mark! and the automatic shutoff when the beer bottle full of fuel tips over! Good stuff. actually reminds me of my garage! Great project guys.
Just finished Brayton cycles in Thermodynamics. Jet engines are so simple when just looking at them from pressure/enthalpy/temp standpoint. It's easy to figure out the mass flow rate needed to achieve a particular velocity and thrust....but I'll be dammed if it's easy to physically make it. So many variables to actually deal with: metal stress, temps outside of the combustion chamber, fan angles, etc....It helps you realize how amazing the engines are on fighters or civilian transport jets.
babs beaver come on guys lets sum this all up in one, guy tests homebuilt jet engine in shorts and bare feet not knowing what the consequences could be to make situations even worse hes using masking tape to tie it down to a brick covered in hardboard with plastic tubes feeding flammable fuel into the red-hot engine...hmmm anyone got any ideas?
Very nice for a home built. The pulsing may indicate a fuel flow problem - uneven fuel dispersal within the combustion chamber caused by too few injectors or maybe low fuel line pressure. I wonder if a fuel pre-heat tube around the chamber would help these small engines ignite faster and burn smoother.
The red object he is holding in his right hand is a pressurized air nozzle. Just like a full scale jet engine it must be "spun up" to about 20% to 30% of max rpm in order for the compression within the combustion chamber to be high enough to ignite the fuel and run "self sustained". Someday one of these backyard engineers will design a bypass jet that uses forced air from the turbine to bypass the combustion chamber and cool the exhaust components.
Did i say RPM once in my message? If your unfamiliar with the imperial system, ' normally is a substitute for feet. A jet engine would seldom be run for extended periods of time at sea level. Congratulations on that logical thinking. I love your grammar by the way it's really trippy looking at it. Thank you good sir, you actually just made my day with how you wrote that message I'm putting it on my inspiration desktop. Its folding elegance and oxymoronic structure, It's almost poetic.
Actually - yes. Many of today's commercially available model turbine engines have a small electric motor attached to the front turbine that accomplishes the ignition spin up. In these small diameter engines I would guess that "high spool" is around 20,000 RPM (guessing) so you need a motor that could spin about 6000 RPM. A centrifugal clutch could be used to disengage the start motor after start.
Looks like the fuelpump is laying in a puddle of fuel, with that open case dc-motor... Oh well, i´m sure nothing would ever happen. That paper-tape is totally the way to go, i´l use the same to repair the seatbelts in my car. The jet-turbine is awesome though.
Nice ingenuity, but I would advise all who make these things at home to please purchase turbines and other parts in the engines that take extremes because if made at home you risk catastrophic failure. These parts have to be made of metals that can handle the stress of intense heat and centripital forces. One imbalance can cause it to blow up like a bomb. Trust me I know because I am a jet engine mechanic.and these things require very extreme tolerances to be considered safe.
what model of lathe did you use to "make" the turbine's body? what construction method and tooling did you use to manufacture the vanes? how did you manufacture the bearings and what is the inside diameter of the race?
The vibrant red glow on the rear blades is why they have a second channel from the compressor that bypasses the combustion chaimber to allow cool air to mix after the combustion so the exhause temp isnt enough to melt the blades...
Well, congratulations. It kind of works, although I doubt if the bearings will last very long. Anyway....where's the telephone. "Hello, fire brigade? Yes yes, my garage is on fire..."
the compressor stage is connected to a set of turbine blades behind the combustor the hot gas turns the turbine, thus turning the compressor. It's a self sustaining cycle once you add fuel. the only thing you'd need a motor for would be to start the cycle.
You made it! Congratulations! It must be the first self sustainable micro jet engine. I hope it would be near when things like this will be easy for everyone. Enough with the commercialization of rc hobby. It started completelly different and now is became a wallet competition! Keep up the good work!
Where's the electric motor? The engine is self sustainable once up to temperature and speed - initially governed by the compressed airline. Great little project! Would love to have the time to do something like this.
@psyoniksoundz Not enough thrust. An engine made in the way this "class" of engine is made, they barely have enough power to sustain operation, nevermind move anything. They are toys, a "look what I can do" conversation piece, and little more. It takes several attempts typically before an engine that is capable of sustaining itself is built.
How is this any different to an off the shelf (OTS) micro turbine just w/o some shrouding? The photographer tried to obscure the inlet but a second or two showed a conventional centrifugal compressor, no secret was implied. Am I missing something? Otherwise I love the sound of gas turbines and rocket of any design.
Yes I understand how normal turbine engines are started. I was meaning the engine sucking in air to burn with the fuel. Did you have to keep the compressor blowing air inside to help it run? I didn't see how you started it, but i saw a batery so i think you used an electric starter?
Actually, most turbines do get red-hot if they're run stationary, since there is no airflow outside of the turbine case to cool it down. Regarding masking tape, it seems rather flimsy yes, but it should hold as the compressor side of the jet is rather cool. Fuel in soda bottle is an excellent choice as long as you keep it far away in case of a failure. Bare feet are just plain functional, shoes, sandals, etc are just a conspiracy to make people spend money on them.
The fuel is going back and forth in the burning chamber like a ping pong ball. That's why you hear "shoo shoo shoo". I think if you change the angle of the propeller panels, that would go away.
A great achievement, congratulations, but where's the fuel pump and the motor between the reserve tank on a more even supply of fuel. My ear the engine revs were not steady.
very cool if u say that u buildid at home but... can u tell me what u use as a combustion ? and... is it write if i want to use gasoline at one of this because gasoline its the most easy to get for me :)
It ran on its own power and without blowing the flame front out the back, that says it all. I like it!
I love the safety sandals shown at the 6:32 mark! and the automatic shutoff when the beer bottle full of fuel tips over! Good stuff. actually reminds me of my garage! Great project guys.
I love the safety approved masking tape holding it down! Seriously, nice job.
Just finished Brayton cycles in Thermodynamics. Jet engines are so simple when just looking at them from pressure/enthalpy/temp standpoint. It's easy to figure out the mass flow rate needed to achieve a particular velocity and thrust....but I'll be dammed if it's easy to physically make it. So many variables to actually deal with: metal stress, temps outside of the combustion chamber, fan angles, etc....It helps you realize how amazing the engines are on fighters or civilian transport jets.
pretty awesome that it produces enough thrust to keep itself running
I like the growing pool of fuel around the pump by the bottle :)
Now there's a real man. He tests his jet engine in short and bare feet.
And straps it down with masking tape.
KironStrife and on a brick with hardboard
with silicone based tubeing feeding directly to the hot engine.
babs beaver come on guys lets sum this all up in one, guy tests homebuilt jet engine in shorts and bare feet not knowing what the consequences could be to make situations even worse hes using masking tape to tie it down to a brick covered in hardboard with plastic tubes feeding flammable fuel into the red-hot engine...hmmm anyone got any ideas?
Very nice for a home built. The pulsing may indicate a fuel flow problem - uneven fuel dispersal within the combustion chamber caused by too few injectors or maybe low fuel line pressure. I wonder if a fuel pre-heat tube around the chamber would help these small engines ignite faster and burn smoother.
The red object he is holding in his right hand is a pressurized air nozzle. Just like a full scale jet engine it must be "spun up" to about 20% to 30% of max rpm in order for the compression within the combustion chamber to be high enough to ignite the fuel and run "self sustained". Someday one of these backyard engineers will design a bypass jet that uses forced air from the turbine to bypass the combustion chamber and cool the exhaust components.
What an accomplishment, I bet that felt so good to get going. Well done
At last a real one working self sustained after the compressed air is gone, congrats!
Did i say RPM once in my message? If your unfamiliar with the imperial system, ' normally is a substitute for feet. A jet engine would seldom be run for extended periods of time at sea level. Congratulations on that logical thinking. I love your grammar by the way it's really trippy looking at it. Thank you good sir, you actually just made my day with how you wrote that message I'm putting it on my inspiration desktop. Its folding elegance and oxymoronic structure, It's almost poetic.
Nice to see one that isn't kept going by an air compressor.....Nice work
I love he's whole set up it has the back yard feel to it!
Actually - yes. Many of today's commercially available model turbine engines have a small electric motor attached to the front turbine that accomplishes the ignition spin up. In these small diameter engines I would guess that "high spool" is around 20,000 RPM (guessing) so you need a motor that could spin about 6000 RPM. A centrifugal clutch could be used to disengage the start motor after start.
glad to see you are using your time to build something important.
Great work, getting that thing to self sustain is no minor feat.
Brilliant! You guys must be stoked!
Wikked nice to see something that isn't just for looks but actually functions like a jet engine!!
Can you do a video on how it is constructed.
That is one nice turbine.. It actually works..
Is the block bolted down? Why doesn't it move?
papper tape on the top of a metal that get really hot,HOW GINIUS!TICH MI MASTER
Freaking awesome, even if it doesn't produce much thrust. Sounds like it sputters a lot.
do buồn đốt chưa kín và tuabin bị hở
+nhat nguyen minh thánh đây rồi. :v
man.. at some high speed this thing can nearly keep itself up and running because of the just sufficient intake.. . impressive.
Looks like the fuelpump is laying in a puddle of fuel, with that open case dc-motor... Oh well, i´m sure nothing would ever happen. That paper-tape is totally the way to go, i´l use the same to repair the seatbelts in my car.
The jet-turbine is awesome though.
Lol Im in stiches..... So true
Nice ingenuity, but I would advise all who make these things at home to please purchase turbines and other parts in the engines that take extremes because if made at home you risk catastrophic failure. These parts have to be made of metals that can handle the stress of intense heat and centripital forces. One imbalance can cause it to blow up like a bomb. Trust me I know because I am a jet engine mechanic.and these things require very extreme tolerances to be considered safe.
Very nice,
One thing though...I don't see any lubrication system.
You might ought to consider plumbing something up.
Good Job nevertheless.
had the fuel system also lube the berrings
what model of lathe did you use to "make" the turbine's body?
what construction method and tooling did you use to manufacture the vanes?
how did you manufacture the bearings and what is the inside diameter of the race?
If one were to own at least one gas turbine, said person is just the definition of cool.
The vibrant red glow on the rear blades is why they have a second channel from the compressor that bypasses the combustion chaimber to allow cool air to mix after the combustion so the exhause temp isnt enough to melt the blades...
Nice work! I cant believe you used masking tape to hold it down though XD
can you explain what the two blue hoses connected to that black box on the left job is? Do you have a continous sparking system? Super COOL!!!
Well, congratulations. It kind of works, although I doubt if the bearings will last very long. Anyway....where's the telephone.
"Hello, fire brigade? Yes yes, my garage is on fire..."
EGT looks just a tiny bit high but then again a home built jet engine rock on good job
Makes a functioning jet turbine.
Secures it with tape.
I like how the engine is just taped to the brick.
you seem to be close to make it work by itself :) dont give up
best modle jet engine I had ever seen!!
the compressor stage is connected to a set of turbine blades behind the combustor the hot gas turns the turbine, thus turning the compressor. It's a self sustaining cycle once you add fuel. the only thing you'd need a motor for would be to start the cycle.
very cool, what are you using for your exhaust turbine blade, hub, bearings and center shaft. It should have blown up. really good
Awsom dude sonds great! I am building one too hope that it works like yours!
I will post vid when I am done.
I think a bottle like that, labeled "JET FUEL" would make a good place to keep moonshine.
what type of bearings are you using in the engine? Also how many compressor and turbine blades and what are they made out of?
That better be a really heavy brick!
If the engine on my plane sounded like that, I would be looking for a field to land in. lol In all seriousness, nice work. :-)
I loved the flames coming off it.
Very nice...but you should have used some more security measures...if it goes off...then good luck
Looks like it would make an effective fan heater if you could stick it on a pedestal and make it oscillate.
and lets try our brick jet with safe boots, safe clothes and safe valves.
also good work!
Woah. It self sustain. Very good for a not so awesome looking jet turbine. Just wow.
You made it!
Congratulations!
It must be the first self sustainable micro jet engine.
I hope it would be near when things like this will be easy for everyone.
Enough with the commercialization of rc hobby.
It started completelly different and now is became a wallet competition!
Keep up the good work!
hey, what did you use for the spark plug, spray nozzle (which specific one) and the fuel pump?
Thanks!
Where's the electric motor? The engine is self sustainable once up to temperature and speed - initially governed by the compressed airline.
Great little project! Would love to have the time to do something like this.
@psyoniksoundz Not enough thrust. An engine made in the way this "class" of engine is made, they barely have enough power to sustain operation, nevermind move anything. They are toys, a "look what I can do" conversation piece, and little more. It takes several attempts typically before an engine that is capable of sustaining itself is built.
Does it produce any thrust? I have you tested how much weight it can move?
Fantastic! Could you make a video and show us how you made it please?
how to you make the fuel ring/ distributer? im making one with an edf motor. mine is going to run off propane i see yours is liquid fueled
gas to start and stainless steel needles made into fuel injection ring.... vaporises kerosene and sheltie mix,
The hoses are for fuel and air. It doesn't need continuous spark especially since it is glowing red.
what are you using for fuel? cause i have a similar home made model jet engine and it works well on kero but just wondering what fuel is best
Add %20 shellite to your kero
nice job, I would recommend using a housing with better heat resistance, like say titanium, but thats expensive
Teach me. How much thrust does it give? Price tag? Size?
How is this any different to an off the shelf (OTS) micro turbine just w/o some shrouding?
The photographer tried to obscure the inlet but a second or two showed a conventional centrifugal compressor, no secret was implied. Am I missing something? Otherwise I love the sound of gas turbines and rocket of any design.
no enough thrust to break the masking tape?!?
just a small question
how did you do it
@standomax from walmart? Does it come with a special sticker and a t-shirt?
Yes I understand how normal turbine engines are started. I was meaning the engine sucking in air to burn with the fuel. Did you have to keep the compressor blowing air inside to help it run?
I didn't see how you started it, but i saw a batery so i think you used an electric starter?
The thing nexto to the bottle is a fuel pump?
What is in your right hand !!?
what do you do with it ?
Actually, most turbines do get red-hot if they're run stationary, since there is no airflow outside of the turbine case to cool it down. Regarding masking tape, it seems rather flimsy yes, but it should hold as the compressor side of the jet is rather cool. Fuel in soda bottle is an excellent choice as long as you keep it far away in case of a failure. Bare feet are just plain functional, shoes, sandals, etc are just a conspiracy to make people spend money on them.
What material did you use for turbine? It didn't melt, that's awesome.
stainless steel ruler was used.... and g force and extreme heat caused it to stretch and fail
Wow! Nice run :p Could you please give an approximate od the mechanical power produced versus the consumption?
Jeezuz - that is SOOOOO going to melt down!!!!!!!!
How many RPMs? What is the oil pressure and what is the turbine's output?
Nice work guys. Did you use a turbos fans to build this? I have thought about doing the same things if that is what you used for fans.
I was waiting for the brick 🧱 to take off 😂.
So what temperature does masking tape start to burn? Or skin for that matter!
Brick, Y U NO FLY?!
Please make a tutorial on how to make this, PLEAAAAAS and thanks for this awsome video!
I kept asking myself: When is the frickin MASKING TAPE gonna burn off? LOL good work! LOL
Seems like fun to build but I would be a little concerned about the turbine blades disintegrating and severing my jugular!
is there enough trust to back flip itself?
what material did you used for making this jet engine?
how many of your jet will you need to move that brick?
The fuel is going back and forth in the burning chamber like a ping pong ball. That's why you hear "shoo shoo shoo". I think if you change the angle of the propeller panels, that would go away.
MAAAATE ! great stuff, all you need now is a couple of wings and some flight training!
sounds like you had compressed air to assist it to run?
what have you used as shaft and how have you installed it ?
how does it sustain itself plz!!! always a flaw with mine.
@paulpaul69atLiveCom what are you using for barrings?
A great achievement, congratulations, but where's the fuel pump and the motor between the reserve tank on a more even supply of fuel. My ear the engine revs were not steady.
Great engine :) Is it seriously self sustaining?
yes it was...
Did you take simple electric engine for this turbine?
very cool if u say that u buildid at home but... can u tell me what u use as a combustion ?
and... is it write if i want to use gasoline at one of this because gasoline its the most easy to get for me :)
Looks like my Dads propane heater for winter time in the garage.
what does the black box and blue lines do?
black box is butane gas cooker chopped up with a hose to start the engine... then over to liquid kerosene
I wonder how long it will take for someone to put one of these homemade jet/turbo-jet/pulse jet turbines on a Razor
How many cost do this turbine ??
and how many pounds of thrust does it produce?
You should make a mini RC fuel truck to go with that thing.
Especially with what looks to be major combustion instability