P-51, A-36, F-82 Mustangs

[rickshaw]

An unusual development of the F-82 Mustang:

When World War II ended, the venerable wartime North American Aviation P-51 Mustang spawned the twin-fuselage F-82 Twin Mustang. But history almost forgot the way the F-82 was in turn reworked in the form of a twin-boom, high tail attack plane, the A-51 Stallion, sort of a cross between a P-38 Lightning and NAA's later Bronco.

Like the string of other attack prototypes that appeared at the same (see the rest of this gallery) the A-51 program was dropped when the attack mission was abandoned by the newly formed U.S. Air Force, and only three YA-51 aircraft were built.

[Source]

[rickshaw]

[Source]

[PR19_Kit]

IIRC they used the already manufactured centre fuselages from the cancelled Tri-Stang order to build the outer fuselages of the Stallion prototype, together with a new build centre fuselage and a different tail............... 

[perttime]

Stéphane is a member here, but hasn't posted recently. His stuff is at http://bispro.deviantart.com/gallery/24200217/Aviation

I think the main landing gear needs to be more towards the rear.

[NARSES2]

That's a very attractive looking airplane

[Dizzyfugu]

I think the main landing gear needs to be more towards the rear.

Second that. The tail booms look oversized, even if the main landing gear was moved (much) further back. 

[PR19_Kit]

That's because they're pretty standard P-82 fuselages, minus the tailwheels and cockpits.

[KiwiZac]

I think I need to build this. I have a built Monogram F-82 gathering dust...

[perttime]

Tigercat nose for the cockpit pod?

[KiwiZac]

Someone somewhere suggested a P-80, which may be the route I go down as Airfix ones seem to pop up fairly regularly down here.

[ysi_maniac]

Reengining Mustang with turbocharged Allison, taken from P-38J.

[Air21]

The P-80 nose was actually a P-38 nose.  Lockheed used the same jigs and tooling to save development time.

In case that's useful for sourcing parts, it looks like the P-38 nacelle isn't as long in the back however.

[jcf]

Yeah, OK Carlos, but where is the turbosupercharger?
Sorry dude, a turboed P-51 would not use the oil-cooler/intercooler
assembly of the P-38J nacelle.

[ysi_maniac]

^^^^
Why not? Can you explain your proposal.

[jcf]

^^^^
Why not? Can you explain your proposal.

Because the intercooler on the V1650 Merlin used in the Mustang is located at
the rear of the engine, ditto the Allison used on the F-82. The big question is:
where do you put the turbosupercharger? There is limited room in the airframe
and you have the issue of the exhaust ducting to the turbine side of the
turbosupercharger. The run of the duct should be as straight as possible,
with any required bends as low a radius as possible. Go research
turbosuperchargers and installations and you'll see the issues involved.