Kriegsmarine Torpedo prototype propeller?

[Hinrik]

Hi guys,

I need your help on this one. What do you think this propeller came from? Clearly has German WWII Ordnance 3 letter manufacturing code.

To me it looks like an ocean going variable pitch propeller, possibly from an automatice guidance system? Any help would be cool. Could this be from an acoustic seeking Torpedo like the FAT, or some advanced system?

Regards

Hinrik

[Hinrik]

Front

[Hinrik]

Inside mechanism

[Hinrik]

Blade angle pitch angle scale on side of blades. What I am not sure, looking at the parts, if this prop was fixed to sertain blade pitch, or if the blades could be turned during "possible torpedo travel"

Seams the end cap was fixed with 4 screws and could not move to change the blade angle. but still there is an apperent "axle" with cross section that goes throught the propeller to the cap.

Any ideas / war time photos would be greatful

Hinrik

[Hinrik]

Front of Cap