Coanda Jet aircraft


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6 June 2006
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In 1910 near Paris (Issy-les-Moulineaux) a flight atempt ended in crash. The plane was piloted by Henri Coanda and had a kind of primitive jet engine. A piston engine drove a fan linked to a combustion chamber and an exhaust. this kind of engine is named thermojet and was also used 30 years laters in the Caproni Campini N.1

I imagined that Coanda flight had been more succesfull and that the French Army asked him a fighter-bomber in 1917. Here's the result...


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Few people know how advanced was Coanda 1910.. It was in fact the first jet ever build.
I agree with that.. in fact if few people recognize the coanda its because of two major issues
- first, its crash
- secondly, its engine. the fact that a piston engine drive the compressor (and not a turbine) mean that the engine is not really a GAS TURBINE.
That's why Coanada atempt cannot change really aviation history...

But I think this engine (despite its weaknesses) could have been a stopgap waiting the real reaction engine. I mean, thermojet or motorjet (it's up to you!) could have propell various aircrafts between WWI and WWII. I like imagining a Heyford bomber with such engines :p
Its mainly because it is scratchbuid...and because I have a rebel imagination (I have to modify :) )
It is also an "operational" variant from WWI
Glad you enjoy it :)
Someway the most intriguing aspect is why Mr Archibald's aircraft does not exist in real life ? I mean during WW1 Coanda returned to just improving Sopwith (?) biplanes instead of developping a jet which looked fairly promising ...I wonder why he did not pursue his jet way ....
Lorin's ramjets were probably limited by material resistance and Riffard powder-rockets interceptor looks unflyable but the Coanda Jet looks really promising ....

Additional question : do you know if there were any jet research in Germany/Austria/Turkey during WW1 ?

You can call me Archie if you want ;D
I tried to imagine aircrafts of the 1919-1939 period with Thermojet.

For example there was the first modern american fighter, the P-24/
P-29/P-31. First "modern" aircraft such as the Lockheed and Northrop (Gamma, Vega, Sirius and the like). The P-39 would have been the ideal candidate, with its central engine.

Biplane bomber with this engine would be particularly strange :eek:
Archie, NACA did work on an airplane along the lines of the Caproni Campini. Google "NACA jet" and see what you get. What today we would call a piston powered ducted fan with afterburner, it got around 1000lb of thrust, but used up to 9gpm of fuel.

Kim M
Hi everyone.
This should be of interest. This is all I have but quite a surprise (for me) anyway.
I realize this should have been posteled elsewhere, actually. Just focussed on the thread name.


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An interresting drawing, with main characteristics.


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In 1956 and 1967, Coandă claimed to have tested his invention in December 1910. His description of what took place seemed to have changed over time.

In 1956, Coandă allegedly stated that, after losing control of his machine, the latter had hit a low wall and briefly taken off, before catching fire and crashing. In 1967, Coandă allegedly stated that, after takeoff, the fuselage of his airplane had caught fire when touched by flames coming out of the engine. He crashed moments later.

If I may, the aeronautical press of the time contains no mention whatsoever of a flight made by Coandă. And I have a feeling that the Cold War era Romanian government and, more recently, Romanian aviation enthusiasts have looked far and wide to find such a mention.

Indeed, if one is to believe the October 29th, 1910 issue of the British magazine Flight, Coandă had just sold his machine to a Haitian American airplane racing pilot and future businessman, Charles Torrès Weymann.
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