DuB-EnG: JET Engines How They Work - Gas Turbines Midlands Model Engineering Exhibition Meridienne 

James is amazing... Thanks for watching!! Please thumbs-up and subscribe! ...

I've been flying RC for 24 years and have scoured youtube for video explanations of RC turgine engines. This video has by FAR the most lucid and comprehensive description of the engine's operation! Not just that, it covers the design evolution too. All the dozens of centrifugal compressors I've seen and didn't realise the obvious fact until NOW that the design is based off vehicle turbochargers. Not to mention the wonderfully detailed explanation of the combustor's hole design. For something that appears so low tech i.e. a can with holes, actually has an extremely specific design dictated by the complex thermodynamics and fluid mechanics in that area of the engine, to the extent that jet engine designers liken it to "black magic". And this video gives a decent idea why. Watching this was like getting my engineering fix through a needle. Thank you for posting! :)

As a (semi-retired) Licensed Aircraft Engineer, I found the skills and grasp of all the necessary engineering principles involved in creating this miniature gas turbine absolutely astonishing - to the point where I may have to begin searching local scrapyards for an old car turbo unit myself..! This also proves that men - and women - in sheds still rule..!

Truly fantastic demonstration/discussion! One of the best explanation of basic miniature jet engine designs I've ever seen - bravo!

I forgot how great this video is... James is a brilliant educator!!! :-)

Thank you for making this video! Great explanation!

Beautiful backyard jet, nice how the fuel is injected

Am a huge fan of jet turbine. Building one for myself. Not sure it will self sustain. But I did learn a thing or two from this video. Thank you so much

What a fabulous insightful presentation. As an ex RR guy this has inspired me to make one myself. Thank you for sharing this.

WOW, just amazing. Dubious, i posted one for you about glass blowing. I could have watched for hours. Such an amazing craft.

Just wow ... just wow ... my heads spinning

Most excellent explanation, chaps! Thanks for sharing this content.

Wow. What a brilliant explanation.

I was once a member of the GTBA... I wanted to build one of these engine from scratch...I never did but I'm able to replace my own bearing thank to your research and work. Jesus from Artes was very helpful too Now all we got is these "cocky fly by night" turbine companies that believe they work for nasa lol...They need to recognize your work. Great video and thank guys

Wow very nice thank you for sharing your hard work and dedication I really do appreciate your videos

4:09 I think the 5mm gap at your finger tip between the turbin blade root and the combustion chamber output leaks hot air into the aft bearing from the rear, which can damage the bearing. Also the turbulence of air leak itself reduces fuel efficiency. The improved version at 5:36 shows the 3mm gap is much smaller and more reasonable. But I think the factory made engines keep the gap smaller than 1mm.

Just one slight correction, a turbine works on 4 cycles is however no 4 stroke engine. Turbines usually work on the basis of the joule cycle and actual 4 strock engines usually on the Otto cycle or the diesel cycle. Even a 2 stroke engine differs slightly from the otto and diesel cycle. Besides that very nice presentation, i didn't knew that people used wood for compressor wheels.

The jet with wooden compressor is a Schreckling FD-3 64, designed by Kurt Schreckling.

Fascinating!

Even i also want to make my own model jet engine ,you are brilliant bro👍🏻☺️

Really good video :)

Plywood compressor hitting 75k rpm. That's legendary, salute

Very good video and message full

Best explaination .....wow...

Wish to see more similar videos, if you kindly move camera closer would be great , thank y so much for the video

I like a bit of gas turbine. I shall join.

please more videos like this

Awesome.

I'm subscribed. I fly model turbine airplanes and just love learning all the science involved. Thanks for dropping some knowledge.

Thanks for explain....modal turbine engine ... working process...

James did the axial ever run? ive dug mine out of the chicken shed to give it a good clean up, get it back up to original condition again

You guys probably visited trinidad back about 20 years ago, I still build gas turbine

Great video , how bearing lubrication is achieved? Thanks.

Very cool.

Very cool

Fantastic interview! thanks for making this video!!

Did you every visited a country in the Caribbean about 25 years ago , back then I built à single stage ngv and open combuster before knowing about the gtba

I’ll try to make one myself in the future 😍

2000 deg C!! Is any part of material of this engine exposed directly to this temp? Or is the engine protected by the air shield from this high temp? James explain that they introduce just small amount of air to the combustion zone (small holes) and than at 2. zone they introduce more air for unburned fuel to burn off and the third delution zone where larger holes are located has the joy to introduced 75% of air to drop from 2000C downto 800C where fast moving air is lead to the turbine wheel. my question is are the walls of combustion champer (first zone) exposed directly to the temp of 2000C?

Good info

Wow!

How does the bearing's lubrication-cooling process works ? Where are the pipes that feeds oil to the bearings ?

Nice video. Wouldn't call it a 4 stroke engine though. You explained the 4 processes of an ICE but they apply to a 2 stroke engine as well.

Epic explanation ❤ , could we get the plan of this jet ??

What will happen if I made the outer blades of diffuser in straight form without curve ?? Thank you for explanation ❤

Can Copper Tubes as sleeves to cover the vaporizing tube, will it survive the temperature of Combistion chamber ?

Thx

I would actually like to do this , is there any drawings , or where can I get the information??

awaited about ramjet machines

How do the engineers know how big to make the fan blades for the engine?

super

Am planning on building a 3stage axial flow 1stage ngv. System

wher is the video about the axial turbine?

Hi Sir, amazing video, Can you make a video on phoenix super panther. As I am an engineering student as well as a model engineer enthusiastic.

one question ive had for a long time is why havent RC Jet engine makers made an axial flow engine yet? is it due to price and complexity? ive seen one off ones but i mean mass production ones. very interesting video though!

Best explanation. But the way he says aluminum is the funniest thing ever 😂😂

was the milled compressor made of aluminum or steel?

Actually I am making fd3 . could you tell me please that the book say to use 608bearing which dimension is 8*16*5 . Could I use 8*22*5 dimension bearing it's few large than? Sorry for bad English.

I wish to build my mini jet engine but i dont have any idea about the diffuser and turbine blades angle

In theory a gas turbine, is much simpler to construct than a reciprocating pistion èngine it only has 1 moving part , the shaft, with bladed fan assembly at either end. A pistion has 3 to more depending on design moving parts. My first turbine about 3 inches diameter single stage 2 stators a single piece combustion chamber , about 5000 rpm

Браво

Good luck

Welded a lot of inconcll and hastloy c276

Dear Sir, how the fuel is injected in the comb.. Chamber is that atomise or liquid form? How even possible that burning liquid form (I tried but went vain ) Please reply Respect from (BANGLADESH)😍😍😍😍

You offer drawings for these?

How can someone contact them? Kindly advise

Can I buy one?

I'm sorry I'm no rocket scientist but those two engines are totally different my friend

Connecticut

I am in need of a double shaft turbine if some one will make it for me

Where can we get this engine?

Itsounds likehebeleives it?

if your aiming for more air to be moved through so that you could get more thrust then i would consider building an axial flow turbine as opposed to these centrifugal turbines

10:10 engine & model name?

is that a shaving brush the interviewer is holding :-)

Then thatbit goes googeleygoogley gargled and the flames gopooof

That alloy that he's talking about is fucking expensive one bolt on an aircraft made from that alloy cost Boeing 2k a piece.

75000 rpm or 7500 rpm did I hear that wrong 75000 rpm??? That’s insane considering it’s wood, handling that centrifugal force

Please in spanish

I’m sure mr Wittlemadehis socomplicated.

"only uses 18-20% of the air coming in" is that because air is comprised of 21% oxygen and all of that oxygen is used for combustion? Or is he talking about 18-20% of the 21% oxygen component coming in, so only 4% of the available air coming in is used for combustion.

Why don't they make jet engines like they use in fighter jets? These look completely different

mm

This video hindi lauguage change

Jet engines are just big feedback loops. I'd say all engines are.

I think your every engine without NGV😁😁😀😀🙄🙄🙄🙄

It's dubbed and EnGLisHe

All those smarts and the English still mispronounce aluminum. ;-)

0:58 is he mocking him by that vomit gesture? how rude are u?

how do jet engines work ... simply ... they suck .. they compress .... they ignite .... and they exhaust ... instead of taking the energy and making a psiton move to make a crank shaft turn to make a flywheel spin to make a drive shaft rotate to make your wheels move ... you spin fans to make shafts move and let the compressed and heated gases left over out to provide movement ... . yup they are JUST 4 stroke engines made to move air instead of pistons ... they are also more work efficient because they use the excess heated gases to propel you ... while a car engine just uses that heat to keep you warm in winter and otherwise cools it with a radiator wasting all that nice potential energy ... just like NASA discarding rocket boosters and fuel tanks every launch to get into space ... while a jet turbine engine is more like elon Musk which uses as much as possible over and over again to get into space ... the old adage .. waste not want not ... NASA never used it Elon is ... what he doesnt discard he reuses making it less costly in the long run . IF nasa reused the fuel tanks from the shuttle as building material for the ISS it could be big enough for a space hotel NOW but they chose to do like americans do all over (everyone essentially) toss their garbage and leave it wherever they like ... a good 80% of the JUNK orbiting earth is GARBAGE because it is not working or end of life or discarded rocket bits ... the shuttle when being designed was touted to be able to retrieve that JUNK and return it for study and resale as scrap or reused parts ... but they never did that instead they made it into a bus with a little haul capacity to get more junk into orbit. .

Hello James. Nice work.. Please how can I contact you