WWI biplane...

Archibald · July 11, 2006, 08:39:51 AM

Here's a model I scratchbuilded some years ago in a moment of madness. I have just discovered that there had been an atempt to fly a jet in december 1910.

Remember coanda? well know of VTOL fans (lift fans ?

) because of its studies on blown flaps. In december 1910 in Issy les Moulineux near Paris he (crashed) a plane which engine was quite similar to the Caproni of 1940 (a piston engine to drive the fan of an early turbojet!)
I imagined that the flight was successfull and that the researchs continued, up to 1917, when allied fighters were mauled by the Albatross and Fockers. The result was the only jet fighter of WWI, the coanda C.1 , also used as bomber (speed 360km/h, the MiG-25 of its time

)
To killed these planes, fokkers pilots had to dive, just like the Mustangs on Me-262 in WWII

Archibald · July 11, 2006, 10:19:05 AM

Other picture

Archibald · July 11, 2006, 01:04:43 PM

Coanda C.1

Brian da Basher · July 11, 2006, 06:26:14 PM

Archie that is absolutely fantastic! I am beyond impressed! Incredible outstanding work!

Brian da Basher

Tophe · July 11, 2006, 09:05:54 PM

QuoteHere's a model I scratchbuilded some years ago in a moment of madness.

Your madness is very welcome, dear.

What a weird aeroplane, so old and so modern all at once!

Archibald · July 11, 2006, 11:20:29 PM

I'm just fascinating by this early jet atempt ... you have a piston engine driving a fan. After that, it's the same as a turbojet...
Just take the thread "coldwar in the 30's" and imagine that instead of piston engines, some planes have this primitive turbojet... can you imagine the Heyford bomber with such engines? or a SE-5A ? Amiot 143 ??!!!

I think it could be cool to launch a thread on the subject (just have to found the english word for this kind of engine

)

PS I modified the position of the engine after posting, because if you look well,you can see the pilot is in the exhaust!!!!!

Archibald · July 12, 2006, 07:05:13 AM

Coanda bomber

Tophe · July 12, 2006, 08:52:35 AM

Dear Archie,
do you thik the Ducted-fan Spitfire on MartinH's site at http://groups.msn.com/TheWhatifandoddballm...to&PhotoID=1452 is related to this principle? I have asked for explanations for this so small fan and receive none...
Anyway, I may try to draw such a Mustang, thanks for the idea... ^_^

Archibald · July 12, 2006, 09:09:36 AM

In this case it's just a ducted propeller. The propeller is on a tube...(more efficient, but more heavy!!)

The coanda is a bit more complicated, you also have a piston engine which drive a fan, but the fan is linked to a combustion chamber and an exhaust (well, a primitive turbojet!!).

Like ducted propellers, too! There was a crazy biplane at the same era of the Coanda... can't remember the name...
If you do a ducted propeller, you just have to add a small tube instead of the prop. If you want a thermojet, you need an exhaust somewhere (not only on the rear like on ordinary jets!).

Archibald · July 12, 2006, 10:20:46 AM

92 views is cool but don't be afraid to let a comentary, guys! I B) don't bite...

elmayerle · July 12, 2006, 12:16:23 PM

Very nice build, but you missed a cure for the problem Henri Coanda encountered with his aircraft where the exhaust flow stuck to the side of the fuselage (hence the term "Coanda Effect"). You'll need a bit of a fairing around the exhaust end to keep the flow from attaching, like that, to the fuselage.

Really, is this that much different from the Caproni-Caprini aircraft of the 30s or some of the other "boost" concepts the Italians, and others played with - using a small piston engine, or a drive off the main engine, to drive a compressor which in turn fed a combustion chamber with the resulting exhaust boosting the aricraft's performance?

Archibald · July 12, 2006, 01:04:00 PM

Quote

Really, is this that much different from the Caproni-Caprini aircraft of the 30s or some of the other "boost" concepts the Italians, and others played with - using a small piston engine, or a drive off the main engine, to drive a compressor which in turn fed a combustion chamber with the resulting exhaust boosting the aricraft's performance?

It's exactly the same principle. The coanda engine worked this way!!!

I know there's quite a problem in the engine position maybe its dangerous for the pilots but also for the wing pylons!!!! I heard that this plane was the starting point of Coanda researchs on blown flaps for VTOL aircrafts - the teoria which made him famous from our days- .

Ok, the caproni system was not really efficient but I'm really asking : had coanda been successfull in 1910, could the thermojet have been an alternative to the piston engine up to 1940 and the turbojet arrival???
I think about a thermojet air WWI... and later, many famous aircraft of the 20's / 30's (Curtiss Racer,Fairey Fox, Hughes H-1 and the like...)

Tophe · July 12, 2006, 11:06:53 PM

My P-51 Coandang 1944 is illustrated at http://www.whatifmodelers.com/forum//index...20&#entry152539
Thanks!

Archibald · July 12, 2006, 11:29:12 PM

What about a twin-Coanda, tophe? a Twinanda or something like that

Tophe · July 13, 2006, 11:03:36 PM

Yes my Twin-Coandang at http://www.whatifmodelers.com/forum//index...20&#entry152539 was rather far from your subject, Archie, and to pay back for the nice inspiration your Coanda gave me, here is the requested Twinanda...

Its name Twinanda reminds me my dear Spanish penfriend Miranda, of Reichdreams fame ( http://www.luft46.com/rd/rdreams.html )... I remembered Ingénieur Coanda was a foreign inventor working in France, and I thought he was Spanish too. Wrong: Google tells me he was Romanian.