Diesel Gyro Engine Topic Urgently Required

[Greg Mitchell]

G"Day Scott,This might be the next engine Larry Neal puts on a Super Sky Car.....I had a good look at the site, 150 HP and 300 HP. No 200 as the 300 can be derated to 200 HP.Very light radial diesel and air cooled for use in both tractor and pusher configurations.There is a wind tunnel testing video.

[asra]

OK, it"s an old thread - apologies for that.

[Scott Hogan]

Ben,Thanks very much for the info and please keep it coming. I am very interested to hear your progress with diesel engines and would consider using a suitable diesel in my RAF instead of the EJ22. It"s been, and is a great engine but the potential hazards of petrol and avgas are always at the back of my mind when flying.Hoges

[exidir]

Hi All,Pretty interesting topic here. Has anyone looked at:http://www.deltahawkengines.com/already. They seem to have some experience with Aero Diesels and good prower ratings, but they are a bit on the heavy side, too.CheersThorsten

[asra]

G"day Scott,Snipped this from a subaru list. Hans Tiejgeler runs the Jodel site, and is pretty switched on. I sorta wondered why everyone wasn"t doing it

[asra]

Check this Aero Deisel out.Nice ahhhhhh ;DKeep up the good work Scotty !!!!!Regards SamL

[asra]

Vulcan Deisel

[Brian]

Has a re drive as well and is actually being run on a test bed. There is no doubt that diesel is the way of the future but aircraft will be able to handle the extra weight better than a gyro although to be fair, the diesel manufactures are starting to get some serious looking motors happening.Another thing touched upon is that the new generation diesel is a very complicated engine with a lot of info needed for the computer and this is a challenge for the aircraft converts.

[Scott Hogan]

Hi All,I have been busy with my house as it is a building site at the moment.... won"t be long now (I"m told).I actually sent Hans from Jodel an email some time ago and never heard back from him. The saving grace for ECU"s in diesel engines may be when they start to race them and want more performance. Then an after market ECU maker may take up the challenge. I see what Hans means though, way too much technology and computing power to easily get running in an aircraft. Never the less, let"s keep looking.Hoges

[asra]

http://www.startwin.com/pagina/bikes...ur/motorEN.pdf They are using the VW 1200 TDI engine.AVL List has produced an experimental 15 kg engine block out of magnesium for this engine. MCC Smart Forfour had a 3 cylinder 1.5 95 hp diesel what was in fact a 3/4 Thielert engine!And don"t forget Honda"s new 117 kg TDI engine!Kind regards,Willem

[asra]

Lots happening (some photos on the second url too) but price seems way too high to me. Several other urls around the gemini engine. I not a suzuki aero conversion - this is what we need for an effective diesel (http://www.raven-rotor.com/html/redr...a_july2007.pdf - I would be concerned about the real cost effectiveness of these given their relatively short engine life?) http://www.airtrikes.net/engines.shtml. Perhaps Tata auto India would be interested - if they can make the nano for $2,500, surely they would be intereste in an effective diesel.http://dieselair.com/archives/2007_0...-boxer-engine/

[asra]

Talk about a hot topic, I have been watching Diesil engines in aviation for some years, and very few ships have come in over a long period of time.First lets get back to why the greenies in the group wanted to look at them in the first place;I believe it was to mitigate environmental consequences in an accident and;to reduce fire hazard.I think it is fair to say that if you get a diesil fire it will burn every bit as hot as avgas or even hotter,and if we had environmental concerns it is time to put away motorised sports.The aero diesil has a history of shattering propellors, overheating drive belts and stuffing gearbox drives. I spent many hours following what people are actualy doing with diesils and aircraft, many people have spent their life savings on this quest without success, ( I bellieve their numbers are growing).lets have a look at the ZOCHE engine, I think it is nearly 20 years and still not out there. There is the Thielert engine which Diamond have been using to a limited success, but have all basicaly been grounded in this country for gearbox problems.There is the SMC which is opperating reasonabley well but by no means is it cheap or specialy light.The problems are the power pulses in each revolution of the engine, the only cure I can imagine is more cylinders which is more weight and more cost and so the cycle goes.The case of increased safety through using less volatile fuels is impelling, but i fear that you may have more accidents through engine failures thus creating a negative safety outcome.It is not going to be cheaper than your Rotax or Subaru engine.Other reforms may lead to a positive safety outcome, such as implementing design codes that are more airworthy / crashworthy, or reducing the crash tally by advanced pilot training.Nothing is going to beat caution, or being grounded through lack of finances after having developed the safe engine.Cheers and thanks for the action

[birdy]

The problems are the power pulses in each revolution of the engine, the only cure I can imagine is more cylinders which is more weight and more cost and so the cycle goes.Wouldnt a simple fluid coupling fix that?

[asra]

Hi BirdyI believe there would be efficiency losses and heat build up in a fluid coupling due to the work being done in absorbing the power pulses, i noticed that a prior response had suggested a torque shaft that could dampen the occilations with minimum losses, but yet there are fortunes being spent and this has not come out in any production engines???? I do not know if it has been tried.I had a look at the rotary engine site, after 30 years of many people dreaming and throwing their inheritance at the rotary, it too has had limited success, but has always broken propellers and melted belts in much the same way. I"ll bet it only reaches limited market placing from enthusiasts.CheersGG.