@@juergenengelmann4629 In fact this already happens in a way because some parts can be so mathematically complicated that they can't be done by hand anymore.
You forget that the guy whos doing the adjustments is not a CNC machine but instead is being advised by a computer. It's hard to imagine life before COMPUTERS. That is, without a doubt, THE greatest invention of all time. CNC machines are COMPUTERS.
The life before the CNC is still acceptable but not so fast. Things are still possible to be made. There are still lots of manual milling machines works today. It is a matter of cost, the CNC itself is very expensive, but it saves time and labour.
@@gersonboav1 The CNC machines make everything sharp. Sharp corners, sharp edges, blades, etc. It's a machine unawre of it's purpose, what the heck it's doing, and what it is. And the people assembling these sharp precision parts could get cut.
I was thinking the opposite, how cheaply these could actually be produced... These things sell for $2500 to $12,000. What cost is there in 6 hours, $400 maybe in parts, materials and labor?
Pretty much all of these model turbojets are based almost directly on the ole KJ66 design, which can be found on the net if anyone wants to build one themselves. Good luck crafting your own superalloy exhaust turbine though. . .
I wonder what Sir Frank Whittle would think if he was still alive to watch this documentary? Without any funding he spent years developing the jet engine virtually on his own in a shed in 1930's England; his first huge engine only produced around a 1000 lbs of thrust and now this little toys (no disrespect) models produce around 30 something lbs, the mind boggles! Good old Sir Frank RIP.
Compared to the cost of a full size jet engine with price tags of several million Euro's, the price tags of these model jet engines costing only a few thousand Euro are peanuts in comparisson.
Seeing this I actually have a lot of respect for the Germans. As bad as they might have been during WOII, it is simply mind boggling what kind of achievements they made from 1940-1945, jet bombers, fighters, and even a jet driven stealth fighter that looks amazingly similar to the modern stealth attack drones like the nEURON and X-47. And they did all of that while none of the Allies even managed to produce a single jet powered plane. Or how the Germans invented and produced cruise missiles (V1), ballistic missiles (V2), guided bombs (Fritz X), and SAMs (Wasserfall). Simply amazing!
It was these things that inspired me to start building a turbocharger based jet at home. I had no intent in making it "fly". I want it to just run. And it does.
I love the way the sound just like real hope popularity of micro turbines will make them on large scale and more affordable.....I am big fan of micro turbines always want one.....
They didn't say this was a Centrifugal jet engine, not an Axial flow engine. As you see the Centrifugal engine is actually quite simple in comparison to an Axial flow. In part it makes the engine easier to maintain and more reliable in that there are fewer parts. Honestly these engines do kick ass and I believe these were the engines used on that Swiss guys wing pack, the one where he jumps from a plane and flies with it before having to use a parachute to land. Sorry I cannot remember the name of the man who flew the Wing Pack but it uses 4 of these engines. All I can say is I am impressed at how simple and clean these engines are mechanically. In remote control it is hard to find better. You also are looking at the high end of Remote Control. This is the power plant of choice for the REALLY big R/C airplanes.
I watched the whole video and this is seriously cool! I had a go on one of my friend's remote control helicopters and that was awesome :D I'm sharing this video!
isnt it possible to build it without integrated starter motor, for holding it external to the shaft, to save weight?? in a model you have to start it only one time and weight counts. or is this for the possibility to start it up again, when the turbine stops unwanted in flight? im not a pro in this, pls tell me someone.
they use radial flow to keep the costs down. there is a 5 stage axial that was developed and Jaguar was looking at it to use in a hybrid from last i heard. it was to power a generator to charge the cars batteries.
How much thrust are they outputting? This turbine looks too big for a model airplane, what are they used for ? Is it possible to make a model turbofan ?
Did any one else notice the horrendous porosity in the cast compressor wheel as he was balance grinding it? I could be wrong but the little black marks looked like pitting or some kind of inclusions in that alloy where he was die grinding it.
on some engines the technician putting it together will sign a plaque. These guys just use the technician's blood spot as signature. You can't fake DNA as proof of who built that engine.
I guess these engines are made at the moment they are ordered because of the hefty price tag (because of the intricate engineering) and the low demand (not that many customers for this beautiful piece of technology).
