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VINTAGRAPH • WPA • WWII • BRITISH COLUMBIA VACATION-LAND: 1950s

Angel of History: 1942

Angel of History: 1942

B-25 bomber cowl assembly, North American Aviation, Kansas City, Kansas. October 1942. View full size. 4x5 Kodachrome transparency by Alfred Palmer.

 

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Shock Mounts

Those yellow things are Dynafocal mounts, where the powerplant attaches to the engine mount ring, which is attached to the airframe structure. They dampen vibrations from the running engine and keep them from transferring to the airframe. The cowl flaps are on separate ring which goes on after the engine and mount are joined. I do not know if the 25 had electric or hydraulic actuators. There is also a metal/asbestos ring (fire seal) which goes around the gap where the engine accessory case goes thru the hole where the worker's head is.

Cowling

I believe the yellow painted parts on the cowling are actuators that open the small cowling doors around the engine for cooling on the ground during runups and taxing, if anyone knows about this, I'd like to know more about it.

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