Found in the sea

[Geertse]

Hello,

Can anyone identify this propeller hub and blade found in the northsea just outside the Belgian coastline.
Thanks a lot!!
Geertse

[Geertse]

Any ideas what airplane it could be?
Grtz

[Geertse]

Another picture

[Geertse]

The last one

[Dave]

It's way beyond my capabilities . . .

[Geertse]

No one that knows something about ww2 propellers?
Grtz

[pmdec]

Hi,

The pitch command system is typically a Hamilton Standard one. The prop is geared (counting the teeth could give the reduction ratio). Without "numbers", no way to go further...

PM

EDIT : the "numbers" are stamped on blade foot, and you have to open the crankcase to see them. This one have 6553-21s blades mounted on a 22D30 hub (from a Beech 17). The third pic is the variable pitch sytem (the aluminium part is missing on yours):

[Geertse]

Thanks for the info.
I assume that the hub is American ,or are they also used on Britisch airplanes?
Is it possible that the prop came from a bomber plane?
Due to the size and weight of it that's my opinion.
Grtz

[pmdec]

Hi Geertse,

I don't think so: your prop is a relatively small two blade prop. Larger aircraft were fitted with 3 or 4 blade props.

Regards,
PM

[Geertse]

Hello,
No no it's a three bladed hub.
Whith only one blade attached.
The dimensions of the blade are 1800mm long from the insert in the hub and 310mm width.
It's very big and heavy.
Grtz

[Geertse]

I think the weight is more than 150kg.
Grtz

[pmdec]

Hi Geertse,

Sorry, I missed the three blade hub at first look! Perhaps you could find some info there: http://www.enginehistory.org/Propell...d/hamstd.shtml and there: http://www.notplanejane.com/hamiltonstd.htm

Regards,
PM

[Geertse]

Hello pmdec,
Apparently it was also used on the lancaster as well on the B-17.
So it would be very hard to determine due to the condition off it.
Thanks a lot for the info!
Kind regards,
Geertse