Ok, I know I'm late to the party here, but I have seen video after video of people trying to make engines out of soup cans and bicycle parts. I'm very happy to finally see someone who took the time to do the math first, and use proper materials. Good job. Several years ago I build one by Kurt schreckling (sorry, I know I misspelled that), and have thought about trying my own design, but I just can't get over how many people are really screwing this up. Someone is going to get seriously hurt by these soup can engines. Anyway, great job to you, and thanks for a great video.
question: why do you use a mixed flow impeller or a radial impeller, it seems most jet engines all use axial impellers, is it because you would need many stages of axial pumps to compress the intake air to necessary pressure for combustion and centrifugal pumps are better at providing high head at low flow rates?
Yep. You can also get a higher pressure rise from a single stage centrifugal compressor. An equivalent axial compressor would have required several stages. Centrifugal compressors are also pretty rugged things.
Outstanding work. Real calculation, interesting design, I wish more people could do the work the way you do instead of just fitting a cumbustor to a regular turbocharger !
Don't give up! It took me a good few attempts/re-designes to get it going. Try posting your troubles on the GTBA website, there are some very good people willing to help there.
that would be a turbo fan and it most likely wont work because it need to make that extra power to turn the turbine and the turbo fan .. it most likely doesn't have to power to work both .. you have to specifically design a jet engine to work a turbo fan .. he would have to put in more compressor stages instead on just one .. but its not likely to work a such a small engine that why you don't see turbo fans on jet engines of this size
What improvements have you made so far mate? would be really interested to know as i am in the design stage of a two stage compressor for an engine with a turbine wheel diameter of 84mm. thanks for the upload man keep em coming
This is awsome work! I would love to know more about your project. Have you started with an existing design? how have you balanced the assembly? What where ruffly your design criteria? Why won't you start a blog or a small website to tell us more??
Say William... what was the final thrust in LB's did you get from this engine. Also was it throttleable at all? Most jet engines of this size tend to runway or won't let you dial down the thrust without flaming out.
the red hot parts of your engine are an indication that you don't have enough cooling air flow. the flame should never touch any metal surface, especially the turbine wheel.
@rus0004 Thanks. I'd certainly like to build bigger at some point. I'm just limited by the size of my lathe at the moment, so I'm trying to build better.
Did you try with a curved inlet? it should give the engine a much better inlet airflow. If you take an electric ducted fan and test it with and without a curved inlet, you can easily hear the extra noise created byt he disrupted airflow if you don't use the curved inlet and the air goes past the sharp edges, creating a turbulent air flow. This should be especially important for static tests.
Great music I'm a jazz drummer! Great job on the engine! If you look at my Gmail image , it's a picture of the Terminator. It took me a year to make ( all metal ) non killer cyborg. Now I've seen your UA-cam post . That's the next thing I'd like to make . Is it ok to copy your work? Thank you!
Absolutely. You can contact me through WPPE. The link is just below the video. We can help with both design and fabrication. Things have moved on quite a bit in the last two years. We are now a company and have in-house CNC machinery. Will
There are or were several books on the subject.. www.amazon.com/Model-Jet-Engines-Modellers-World/dp/0951058991 But over all it's really not worth the time. Small jet engines are hard to build and requires solid engineering. This is the first video where I've seen someone take the time to preform resonance analysis on the shaft, which is a major point of failure for small jet engines.. Once again great work... but I have better things to do with 3 years.
Impressive - it would be great if you could get cool air to pass through the core of the driven vanes and bleed over the leading edge to form a compressed air barrier - then you could spool it crazy lol
Funny you should mention that, because the next engine will have exactly that feature. The purpose of this is to allow higher turbine entry temperatures, increasing the Carnot cycle efficiency.
Richard Nobel explained it to us - He called it the Crystalline Rotor - It was a upgrade by RR on the second hand Phantoms bought by the RAF to extend their envelope - he managed to secure & use them in Thrust SS2
These two books contain just about everything you need to know: Gas Turbine Theory - H.I.H. Saravanamuttoo (Author), G.F.C. Rogers (Author), H. Cohen (Author), Paul Straznicky (Author) Model Jet Engines - Thomas Kamps (Author)
Its self sustaining ok....the only problem you seem to have is a very high temperature in the NGV section. This is down to combustor design. For such a large engine, it looks a little on the short side, which means you could afford to make the Combustor longer. Are you using reverse flow vapourising tubes in your Combustor?, if not, then I suggest you try them. I made my own engine also, some years ago..I have a flight clip up if your interested....Dont you find the comments amusing from those who dont know what the hell they are talking about? Some of them are priceless...:)
The maths is pretty straight forward - it's the understanding of thermodynamics which is a little harder to get your head round. There's a book called Model Jet Engines, by Thomas Kamps which guides you through the practical process of designing an engine. It's excellent. There's another one called Gas Turbine Theory, by Saravanamuttoo which goes into more depth on the theory side of things - also very good.
+Patrick Bateman The second engine has been on hold for a few years now - it's half built. Hopefully I'll find the time to pick it up again soon. I'm working on a new espresso machine design now, which uses some similar thermodynamics to the engine. I should have a video of that up soon.
+Patrick Bateman Yes it does. Whether the engine self sustains or not, is down to how well you have designed and made the thing. If the engine generates more energy than it is consumes, then it will self sustain.
Please dont angry... Try to flow the hot air from exhause , into outlet chamber (will added preser turbine) , and... Make another branch exhause , IN the first exhause... ( It's Not AFTER BURNER , ... buy the way...) That's will make more eficient of avture... Please try.... That will be a new generation of jet engine...
Awesome !! 10 years goes by, but i never bored to watch this video.
you are the boos of mechanical engineering
and I'm studying that
Greetings from Spain!!!
You're the most skilled jet enginebuilder I've ever seen ;)
When it says self sustaining it means that the blades are kept spinning by the combustion and not the compressed air used at 1:42.
Congratulations, The best engineering in your project!!!
Ok, I know I'm late to the party here, but I have seen video after video of people trying to make engines out of soup cans and bicycle parts. I'm very happy to finally see someone who took the time to do the math first, and use proper materials. Good job. Several years ago I build one by Kurt schreckling (sorry, I know I misspelled that), and have thought about trying my own design, but I just can't get over how many people are really screwing this up. Someone is going to get seriously hurt by these soup can engines. Anyway, great job to you, and thanks for a great video.
which would you say runs better, the compact version here or the unit still as an automotive turbo?
Great job, if my engines touch that long to make I would have never made one.
question why did you decide on centrifugal compression? Axial has a much better mass flow rate. Was it too complicated or costly?
question: why do you use a mixed flow impeller or a radial impeller, it seems most jet engines all use axial impellers, is it because you would need many stages of axial pumps to compress the intake air to necessary pressure for combustion and centrifugal pumps are better at providing high head at low flow rates?
Yep. You can also get a higher pressure rise from a single stage centrifugal compressor. An equivalent axial compressor would have required several stages.
Centrifugal compressors are also pretty rugged things.
Excellent job! We know exactly how difficult the work is at hobby level. Would you like to build bigger?
Outstanding work. Real calculation, interesting design, I wish more people could do the work the way you do instead of just fitting a cumbustor to a regular turbocharger !
Fantastic work!! Thanks for sharing, this video inspired me to build my own!
now this is quality Engineering!! great job!
very nice clean built engine all you need now is a exhaust cone tip or a vectoring nozzle.
Don't give up! It took me a good few attempts/re-designes to get it going. Try posting your troubles on the GTBA website, there are some very good people willing to help there.
Brilliant work and documentation !!
Engine looks good. Can you please tell me the overall pressure ratio of your engine.
Where did you learn to do all this? (like all the calculations, design, etc...)
Put a fan blade in front of the compressor blade and make another airflow for the fan. That can make a lot of thrust.
that would be a turbo fan and it most likely wont work because it need to make that extra power to turn the turbine and the turbo fan .. it most likely doesn't have to power to work both .. you have to specifically design a jet engine to work a turbo fan .. he would have to put in more compressor stages instead on just one .. but its not likely to work a such a small engine that why you don't see turbo fans on jet engines of this size
How is the engine self-sustaining?
What improvements have you made so far mate? would be really interested to know as i am in the design stage of a two stage compressor for an engine with a turbine wheel diameter of 84mm. thanks for the upload man keep em coming
This is awsome work! I would love to know more about your project. Have you started with an existing design? how have you balanced the assembly? What where ruffly your design criteria? Why won't you start a blog or a small website to tell us more??
Do you do your own CAD and was the video showing the turbine being wire cut?
because of the size of the model, in smaller size applications it's easier to work with centrifugal compressors from what i understand.
Quite similar to the 1930's - 40's Whittle jet engine.
That design was simple and reliable.
I wan to ask you about something !
If I want to make a Jetpack from jet engine , how many thrust force needed to do it !?
I can admire all of your engineering. I prefer the eyeball and feel approach. No CNC on your engine?
i was just curious how does it ignite because i didn't see a sparking system or a match stick used so can someone please explain it to me.
Say William... what was the final thrust in LB's did you get from this engine.
Also was it throttleable at all?
Most jet engines of this size tend to runway or won't let you dial down the thrust without flaming out.
Please more informations about how made exhaust turbine. My project like yours and i stuck on that part until 1 year.
would you calculate for me the size diffuser I need for 400 lbs. thrust
good afternoon brother apology, which glow plug voltage used .. and need to run the same
the red hot parts of your engine are an indication that you don't have enough cooling air flow. the flame should never touch any metal surface, especially the turbine wheel.
What is the diameter of the compressor wheel? What are the RPMs while running on it's own?
also where did you get the impeller from?
@rus0004 Thanks. I'd certainly like to build bigger at some point. I'm just limited by the size of my lathe at the moment, so I'm trying to build better.
Did you try with a curved inlet? it should give the engine a much better inlet airflow. If you take an electric ducted fan and test it with and without a curved inlet, you can easily hear the extra noise created byt he disrupted airflow if you don't use the curved inlet and the air goes past the sharp edges, creating a turbulent air flow. This should be especially important for static tests.
How many thrust lbs?
Really cool project my friend -- NI's LabVIEW is so great right
How many cost build this Jet Engine??
Wow, this design is so neat that I think you might be an engineer!
thanx for the vid!! im gonna make my own too i got plans for fd3/64 but i will have to make it without the lathe!
can you tell me where you buy the temp sensor thks
How about the sensors for indicators?
I got most of the sensors from here: www.phidgets.com/
Nice engine, By adding two more turbine stages do you believe it could reduce the amount of glowing heat?
How many cycles your engine can hold ?
How much thrust ?
they must have been talking for a while at 2:30 is that thorn growing?
your hard work 3 yrs was paid and success...congratulation..
who made this engine?
Very nice work, buddy!
Congratulations!
This really is fantastic! Monday morning made!!
Great music I'm a jazz drummer! Great job on the engine! If you look at my Gmail image , it's a picture of the Terminator. It took me a year to make ( all metal ) non killer cyborg. Now I've seen your UA-cam post . That's the next thing I'd like to make . Is it ok to copy your work? Thank you!
Absolutely. You can contact me through WPPE. The link is just below the video.
We can help with both design and fabrication.
Things have moved on quite a bit in the last two years. We are now a company and have in-house CNC machinery.
Will
what program you used?
Boa noite, há possibilidade de me enviar os dados de fabricação deste motor ,ando pensandoem começar a construir um tambem.
obrigado
It would be awsome if you upload some videos explaining how to design a jet engine
hahahaha yeah sure just do that
There are or were several books on the subject..
www.amazon.com/Model-Jet-Engines-Modellers-World/dp/0951058991
But over all it's really not worth the time. Small jet engines are hard to build and requires solid engineering. This is the first video where I've seen someone take the time to preform resonance analysis on the shaft, which is a major point of failure for small jet engines.. Once again great work... but I have better things to do with 3 years.
did you really make it by yourself?
can you guild me to design simple one similar to this engine?
Awesome job! Well done!
To awesome, would be a crappy understatement. Thanks for sharing.
Awesome job!
I used ceramic ball race bearings, most small gas turbines use this type.
full professional work.
Thank's for Replay...
Best regards,
Nurmogati.
Impressive - it would be great if you could get cool air to pass through the core of the driven vanes and bleed over the leading edge to form a compressed air barrier - then you could spool it crazy lol
Funny you should mention that, because the next engine will have exactly that feature. The purpose of this is to allow higher turbine entry temperatures, increasing the Carnot cycle efficiency.
Richard Nobel explained it to us - He called it the Crystalline Rotor - It was a upgrade by RR on the second hand Phantoms bought by the RAF to extend their envelope - he managed to secure & use them in Thrust SS2
how much is one?
Great job!
how can I acquire the .cad project? thanks
In the startup it really sounded like a Rolls Royce Derwent!
Good work William!! 3 years development.. from idea.. gathering info.. plan.. purchase lathe and other equipments..hahaha
These two books contain just about everything you need to know:
Gas Turbine Theory - H.I.H. Saravanamuttoo (Author), G.F.C. Rogers (Author), H. Cohen (Author), Paul Straznicky (Author)
Model Jet Engines - Thomas Kamps (Author)
I need two of them to keep up with my proyect
Woooww this jet engine self-sustaining . . . . . . Awesome . . . . Mine, didn't want do that :(
try to make a 5 stage compressor jet engine
Its self sustaining ok....the only problem you seem to have is a very high temperature in the NGV section. This is down to combustor design. For such a large engine, it looks a little on the short side, which means you could afford to make the Combustor longer. Are you using reverse flow vapourising tubes in your Combustor?, if not, then I suggest you try them. I made my own engine also, some years ago..I have a flight clip up if your interested....Dont you find the comments amusing from those who dont know what the hell they are talking about? Some of them are priceless...:)
I choose building a model gas turbine for my final project in college, do I need three yrs to complete it !! :S
great job!!!
How can i contact u
waw
amazing job
please more videos !!!!
you need to put a afterburner on the second engine but COOL!!!!!!!1111!!!!
would you be able to make parts for my engine I need it to give 400 lbs trust
great job
good job! wonderfull
The Rolls Royce decal really sets it of lol
Forgive me for the preposterous idea, but you should make a jet engineered espresso maker
Hehehe, I wonder what gave you that idea!
Very cool 👏👏👏👏
#EXCELLENT, I've no more to say.
Where did you learn the mathematics necessary for this?
The maths is pretty straight forward - it's the understanding of thermodynamics which is a little harder to get your head round. There's a book called Model Jet Engines, by Thomas Kamps which guides you through the practical process of designing an engine. It's excellent. There's another one called Gas Turbine Theory, by Saravanamuttoo which goes into more depth on the theory side of things - also very good.
William Playford Jeez, I didn't expect a response that quickly! Thank you.
Out of interest, how's progress on the second engine coming along?
+Patrick Bateman The second engine has been on hold for a few years now - it's half built. Hopefully I'll find the time to pick it up again soon. I'm working on a new espresso machine design now, which uses some similar thermodynamics to the engine. I should have a video of that up soon.
William Playford Good to know. Does the book deal with things like how to make the engine self-sustain?
+Patrick Bateman Yes it does. Whether the engine self sustains or not, is down to how well you have designed and made the thing. If the engine generates more energy than it is consumes, then it will self sustain.
give formulas pls
Designed by a real engineer with his own state-of-the-art research machine shop...
Please dont angry...
Try to flow the hot air from exhause , into outlet chamber (will added preser turbine) , and... Make another branch exhause , IN the first exhause... ( It's Not AFTER BURNER , ... buy the way...)
That's will make more eficient of avture...
Please try.... That will be a new generation of jet engine...
Do real jet engine when air craft was flying , the exhause was burn like that...???
Math , check..machining,check...welding... weldingtipsandtricks, good UA-cam...just saying.
😂 it’s not got much better since then 😅
@@9baristaespresso all in good time, as long as we are trying. It'll come.
nice job,2 good.
exelente,muito bom.
Please put it on a bike
+quinnscoolscience Done that....
I think i would put it on top of my computer for some real airflow ;)
Wow amazing. too many technical data that i dont understand how to read ;)
yeaaaa...... !!! that worked !!
GJ!