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African-American aircraft mechanics George Johnson and James C. Howard of the US Army 99th Fighter Squadron, Italy, Feb 1944

Caption     African-American aircraft mechanics George Johnson and James C. Howard of the US Army 99th Fighter Squadron, Italy, Feb 1944 ww2dbase
Photographer    Unknown
Source    ww2dbaseUnited States National Archives
Identification Code   208-AA-49E-1-1
More on...   
P-40 Warhawk   Main article  Photos  
Added By C. Peter Chen

This photograph has been scaled down; full resolution photograph is available here (1,393 by 1,101 pixels).

Licensing  Public Domain. According to the US National Archives, as of 21 Jul 2010:
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Visitor Submitted Comments

1. Commenter identity confirmed Bill says:
17 Apr 2014 04:07:21 AM


No matter what designers and engineers create, its
the mechanic that keep the wheels turning. The ground crews were the unsung heroes during WWII.


Photograph gives a good look at the underside of the engine, showing the bulkhead, engine mounts and flexible tubing the coolant radiators, oil cooler underneath. Hoses running in and out of them circulated coolant around the engine keeping it from over heating, separate lines circulated oil between the engine and its radiator and engine block.

The radiators were honeycombed allowing air to pass through it and cooled the fluids inside.
The amount of air that passed through the radiators were controlled by the four flaps aft of the lower cowling.
Later models of the P-40 had improved flatten
exhaust stubs that made the exhaust flame harder to see during night flying. Although the Allison in-line liquid cooled engine looks complicated it was still easier to work on than the Rolls-Royce Merlin, but tell that to the men who worked on them.
2. Commenter identity confirmed Bill says:
21 Apr 2014 03:02:51 PM


The Allison liquid-cooled inline engine was the only indigenous US developed liquid-cooled engine to see service in WWII. Did you know that over 70,000 were produced, mass production brought the price down from $25,000 to $8,500 that's in 1940s dollars.

In the above photo, it looks like the mechanics have removed the two circular coolant radiators and the single central circular oil cooler, these were located in a large scoop beneath the nose cowling air flow dividers.


Over 60% of US Army Fighters were powered by the Allison engines were improved in speed and horse power during the war, they were strong & reliable.
3. Commenter identity confirmed Bill says:
22 Apr 2014 02:58:18 PM

The Curtiss P-40 was also powered by the British
Rolls-Royce Merlin Liquid-Cooled Inline Engine.

Above photograph looks like a Merlin powered P-40 this power plant changed the plumbing around the engine was different from the Allison, even the coolant radiators & oil radiators were different in design.

The "Made in the Good Old US of A", is really a British Merlin Engine that was built under license. I do my best and make any corrections to any photograph listed with ww2db...if anyone has more information post it here, because I'd like to read it.

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