Asymmetric Mustang

[Librarian]

I hope this works out. Put in the extra crew place:



...and started all the putt putt putting... :



Left the rear open for a strike camera or a prone gun position:

[Librarian]

Enough for today:



and:



What with the kid's extra curricular activities, getting supper ready etc I find myself knackered most evenings . Got to go to Scouts now....

[PR19_Kit]

So where's the engine going?

[ericr]

amazing in the word ...

I guess the engine goes in the nacelle, but why us it so wide?

[Librarian]

I've tried to envision a kind of coupled engine, like the Crecy, which allows space down the centreline for a 20mm gatling. Underneath, I was going to cut out and display the weapons bay behind the engine but decided against it. It would have revealed the drive for the gun and large ammo tray but I'm just too tired to get that detailed right now. She will have a large spinner and contra-prop, and a single mainfloat with wing-mounted outriggers. Kind of a heavier armed escort for the POA-38 I just completed.

[PR19_Kit]

Contraprop! YESSSSSSSSSSsssssssssssssss!

[Tophe]

I'm just too tired to get that detailed right now

Putting an engine on an aircraft is a boring detail I agree
Wonderful model, thanks! Still enriching my rich collection!
(I wait for the result to draw it, or will I be allowed to include a picture with your name Librarian?)

[wuzak]

I've tried to envision a kind of coupled engine, like the Crecy, which allows space down the centreline for a 20mm gatling. Underneath, I was going to cut out and display the weapons bay behind the engine but decided against it. It would have revealed the drive for the gun and large ammo tray but I'm just too tired to get that detailed right now. She will have a large spinner and contra-prop, and a single mainfloat with wing-mounted outriggers. Kind of a heavier armed escort for the POA-38 I just completed.

You mean something like these?





http://jn.passieux.free.fr/images/Db610_2.jpg

but using 2 Crecy, Merlins or Griffons?

[Librarian]

If that is the DB60? from the Heinkel 177 then yes, something along those lines. Apparently the Griffon is out due to its layout but I suppose some kind of Merlin adaption....as long as there is a valley through which the gun can lie. To be honest, this isn't my field and I've really succumbed to what-if. Just assume the engines there and it works . OK, its a cop-out but I am very worn out at present. My youngest is keeping us up at night, sustained disturbed sleep etc, due to stomach pain and the Doctors can't seem to identify the problem (stomach migraine is the best they can do). Might have to take a break from this as I really should be at my best... .

[PR19_Kit]

Why would a Griffon be 'out' and a Merlin 'in'? The former is pretty much the latter multiplied by 1.3.

Rotate the engine outward about its crankshaft so the inner cylinder bank is almost vertical, connect the crankshafts with a gear train and slide your cannon into the gap below the cylinder heads. Job done.

[Librarian]

That sounds goooood. OK, its officially an altered Griffon. What kind of Hp would that crank out? Speed isn't important but power for shorter take-offs etc. She's going to be a Delta/Mangrove Marauder for junking junks and the like...a "Squatter Swatter" perhaps.

ps Kit, did you dig out that monster Tomcat yet?

[PR19_Kit]

Well the highest power Griffons were around 2400 bhp, but you'd lose some through the extra gearing, say 10%? So the Twin Griffon should manage around 4300 bhp at a guess.

I couldn't find that MONSTER Tomcat before but now I have.

The distance from the wing pivot to the tip when it's spread is 217 mm. and from the fuselage centre line it's 290 mm. That'd be around 8.5" and 11.5" in real measurements.  With the wing folded it's 75 mm to the outer edge of the wing from the pivot and 175 mm to the fuselage centre line, or 2.9" and 6.9" in Imperial.

[Howard of Effingham]

ps Kit, did you dig out that monster Tomcat yet?

considering his reaction when he won it in a raffle, was like what the heck i'm i gonna do with this? he's probably
still thinking. as i think his list of measurements shows....  

i'll stick me neck out and say it probably won't get longer wings.  

either way and getting back on track an asymmetric mustang is an interesting idea. 

[wuzak]

Well the highest power Griffons were around 2400 bhp, but you'd lose some through the extra gearing, say 10%? So the Twin Griffon should manage around 4300 bhp at a guess.

I couldn't find that MONSTER Tomcat before but now I have.

The distance from the wing pivot to the tip when it's spread is 217 mm. and from the fuselage centre line it's 290 mm. That'd be around 8.5" and 11.5" in real measurements.   With the wing folded it's 75 mm to the outer edge of the wing from the pivot and 175 mm to the fuselage centre line, or 2.9" and 6.9" in Imperial.

To lose 10% in reduction gearing would require some pretty bad gear.

However, as the two Griffons are working as independent engines and each driving one half of contra-rotating coaxial props there shouldn't be any extra gearing.

So, you should get the full amount!

If you use the 57s from the Shackleton (without the CR props for each!) you could get 2 x 2500hp @ +25psi and ADI for takeoff.

Engine installation would run to ~4200lbs + weight for radiators!

[wuzak]

If that is the DB60? from the Heinkel 177 then yes, something along those lines. Apparently the Griffon is out due to its layout but I suppose some kind of Merlin adaption....as long as there is a valley through which the gun can lie. To be honest, this isn't my field and I've really succumbed to what-if. Just assume the engines there and it works . OK, its a cop-out but I am very worn out at present. My youngest is keeping us up at night, sustained disturbed sleep etc, due to stomach pain and the Doctors can't seem to identify the problem (stomach migraine is the best they can do). Might have to take a break from this as I really should be at my best... .

Yes they are the DB 606 (coupled DB 601) and DB 610 (coupled DB 605).

The Griffon is out as an engine because the supercharger and intake are in the way. Same for the Merlin. But if you couple them together like the DBs, and as PR19 said, there shouldn't be a proble of arranging them to allow space between the two engines to run the gun (still talking Gattling?).