More Mustang "Stuff" ...

[Mark Allen M]

This is one iteration of the two XP-51B's (built from NA-91 Mustangs}.
"Notice that there's NO carb air intake above OR below the prop spinner. This one had a "slit" (for lack of a better term) in the lower fuselage (actually the underside of the wing) to feed air to the updraft carburetor on the Merlin.
This "straight" coolant housing ("doghouse") scoop mouth, which also showed up on the first few production P-51Bs, was discovered in wind-tunnel studies of the actual 2nd XP-51B prototype (minus the extension/wingtips, so it'd fit into the wind tunnel that was available - in April, 1943 at Ames Aeronautical Labs), was discovered to be what was causing "duct rumble," that showed up at higher speeds in the Merlin prototypes and early P-51Bs.
Reshaping/recontouring the mouth of the doghouse "cured" that rumble. I've got a copy (not an original) of the report, replete with photos, etc.
Anyway, the "correction" was made to the production P-51Bs (and the two Prototypes, I guess, since they were still flying them).
That "slick" nose was carried through on the XP-51J , which had its carb air intake in the front part of the doghouse, maybe...don't quote me on that".
Quote: Tom Griffith
Photos: Paul Varga Collection via Richard Miller via NAA



Below: Instrument Panel Arrangement - XP-51B



Below: P-51B Firewall Forward Innards



Below: P-51B model nearing completion in Inglewood plant

Paul Varga Collection via Richard Miller via NAA by Historic Aircraft, on Flickr

[Mark Allen M]

NA-73 Mustangs on the left side and RAF Harvards on the right.

[Mark Allen M]

How P-51C Wings were built


radiator intake on the NA-73


3rd production P-51B

[Mark Allen M]

An assembly line photo of early Mustangs along with what looks like rear fuselage sections for early B-25 Mitchells


P-51A


Production A-36 wing brakes

[Mark Allen M]

Factory 3 view of a 'concept' follow on of the Mustang with an R-2800


P-82 Production

[Mark Allen M]

A-36A on the ramp in Inglewood

[Mark Allen M]

P-51A


P-51A


P-51B_Mustang


P-51 Mustang Mark 1, AG346, the first production aircraft to be supplied to the Royal Air Force, on the ground in the USA, July 1941


Ramp shot pre test flight at NAA

[Mark Allen M]

Workers at the North American Aviation Plant in California assemble P-51 Mustangs, October 1942


North American P-51 Mustang Production Line

[JohnB]

Anyone else think that "concept" of a R-2800 Mustang look a bit like a single seat T-28?

Anyone know if it was it was a formal proposal to the AAF or just some guys at NAA kicking around ideas?
It would be interesting to compare performance specs and weight with other 2800-powered fighters.

[raconnel]

Anyone else think that "concept" of a R-2800 Mustang look a bit like a single seat T-28?

Anyone know if it was it was a formal proposal to the AAF or just some guys at NAA kicking around ideas?
It would be interesting to compare performance specs and weight with other 2800-powered fighters.

FWIW, I think it resembles a variant of the XP-60.

[Stoney]

or a FW 190

[Mark Allen M]

More Photos: Paul Varga Collection via Richard Miller via NAA




Here is an assembly line shot of P-51A. Note the wooden main gear wheels.


A complete side view of the Coolant Scoop install on P-51A


A-36A Cutaway


Reynold Brown did a wide range of artwork for NAA, ranging from the technical, to that used in a number of their advertisements


Bazooka Rocket Tube Install on a P-51A. MX-241 tested on A-36, P-51B, P-1D-1-NT and P-51D-10


A-36A in flight


NA-73 ground run up


NAA trialed a number of different propellors on the Mustangs


HAM-STD prop


P-51A Instrument panel


P-51A Right Side Cockpit


placards RH side cockpit P-51A


P-51A was fitted with water injection on the Allison in 1944


North American P-51B with night fighter finish, February 21, 1944




PR image of a flight of a P-51A flying with a Texan and a Liberator built under license

[quemerford]

Mark,

I've just dropped you a PM.

Duncan

[Lynn Allen]

Mark, thank you for the time and effort you did to put into this together.

Lynn

[Tourist-51]

Wonderful stuff, thank you.