Mosquito PR - Turboprop - finished !!

buzzbomb · February 04, 2011, 05:23:58 PM

I am am.. lovin' the stuff you blokes have put up for this GB already

So I was thinking (Warning:pathetic Backstory ahead

)
As 1945 moved into 1946, the Rolls Royce backroom boys had produced a workable turboprop engine, improving the original work done by György Jendrassik to produce an efficient, yet reasonably powerful Turboprop engine. This was then fitted to the Mosquito to provide the next version of the Mosquito Photo Recon bird.

So the plan is to use an Airfix mossie and some ME-262 bits to produce a turboprop Mosquito.

Well that's the plan anyway.. we shall see

Brian T

PR19_Kit · February 05, 2011, 12:45:11 AM

The mind truly boggles! And you've not even started it yet!!!!

ChrisF · February 06, 2011, 04:56:15 PM

Roll on this one...

buzzbomb · February 11, 2011, 04:08:11 AM

lurching into action here

There are times when the mind vision and the actual, what I can achieve vision do not meld.
The Engines appear too high, but to keep the undercart where it is.. not a lot of choice.
I have to bear in mine here, that the turboprop, would have been in it's infancy, nothing more than a Trent style really,
so to fit the engine onto an exiting airframe compromises would have to be made.. here it is lateral view, over the existing undercart fairings.

I have fitted some old 1/32 stuka bomb halves as the exhaust shields. This will be cut/filed/sanded/filled to shape.

Planning to fair in the wheel wells with the engines via an additional intake. I will fill the old wing intakes, most probably.
I also plan on altering the nose shape to house cameras. So it won't be so pointy.
Probably some more avaition engineering oopsies.. but hey.. this is whif world

More to follow.. wait out.

Hobbes · February 11, 2011, 04:29:48 AM

Don't forget that turboprops are compact, usually smaller than the piston engines they replace. The extra length of a turbojet is mostly the exhaust duct, which you don't need.
You could probably get away with fitting the turboprop in place of the Merlin. Fit one or two big exhausts with ducting over the wing or alongside the wheel fairing.

Gondor · February 11, 2011, 10:49:56 AM

Quote from: Hobbes on February 11, 2011, 04:29:48 AM
Don't forget that turboprops are compact, usually smaller than the piston engines they replace. The extra length of a turbojet is mostly the exhaust duct, which you don't need.
You could probably get away with fitting the turboprop in place of the Merlin. Fit one or two big exhausts with ducting over the wing or alongside the wheel fairing.

This makes a lot more sense than what you have in the last picture which would make flying the aircraft very difficult with the engines blocking most of the pilots view to the sides. It would also look more aesthetic as well.

Gondor

GTX · February 11, 2011, 12:42:49 PM

Quote from: Hobbes on February 11, 2011, 04:29:48 AM
Don't forget that turboprops are compact, usually smaller than the piston engines they replace. The extra length of a turbojet is mostly the exhaust duct, which you don't need.

Modern ones of axial design are, but if this was to use turbo-props of centrifugal design (such as the trent mentioned - see below for pic), then you have a much larger beast.

That said, you could try moving the engine itself ahead of the wing and then there would be room for the exhaust ducting and undercarriage.

Regards,

Greg

buzzbomb · February 12, 2011, 10:51:34 PM

Quote from: GTX on February 11, 2011, 12:42:49 PM
That said, you could try moving the engine itself ahead of the wing and then there would be room for the exhaust ducting and undercarriage.
Regards,
Greg

I am aiming for more of the Trent style, so this makes a fair bit of sense. Another thing I had looked at was the hulking size of the Python in the Wyvern

Thanks to you all for the feedback so far.. I have taken it all onboard and have ditched the 262 engines.. another project perhaps.
A couple of drop tanks had to die, but I am more satisfied with how it looks now

Still a way to go, however Contra rotating props are happening as well.. I have a donor Sturgeon Vacform in the pre-loved stash.

Gondor · February 13, 2011, 12:40:57 AM

That is looking great, nicely streamlined and far better aesthetically.

Gondor

Hobbes · February 13, 2011, 05:22:40 AM

Yep, much better.

PR19_Kit · February 13, 2011, 05:41:00 AM

Quote from: buzzbomb on February 12, 2011, 10:51:34 PM
I have a donor Sturgeon Vacform in the pre-loved stash.

Can you use 'Sturgeon' and 'pre-loved' in the same sentence?

Old Wombat · February 13, 2011, 06:25:42 AM

Go, Brian!

Looks like a great concept; that it will be a great build goes without saying!

pyro-manic · February 13, 2011, 06:55:07 AM

That does look much better.

kitnut617 · February 13, 2011, 07:46:44 AM

Trying not to go into 'JMN' mode, but as I'm developing my DH.101 wing right now, I notice your engine and exhaust go right through the two wing spars ----

But there is possibly a solution, a drawing has been discovered of the Jet Mosquito. It was to use the Halford centrafugal engine and it is placed in between the spars, the rear one still having to be a spectacle spar because the exhaust goes through it. The wing has been 'reversed' though, the leading edge is swept and the trailing edge is 90 degrees to the fuselage centerline.

pyro-manic · February 13, 2011, 08:15:36 AM

The engine could be mounted lower, with an S-shaped exhaust? Or a flattened exhaust to fit over the spar or something.