Martin wins again...Pride, you're up!

Alternator.

It looks like some sort of transmission, minus a bell housing and tailshaft.

Close, but not close enough

I do not know for sure.

A kinetic energy recovery generator?

Close enough I would say.

Not many people will know unless they have worked on one.


It is an Integrated Drive Generator. IDG

Its purpose is in aviation.


It works by converting variable speed shaft power into AC power. So a power source for aircraft

It's a generator used in a hydro-electric application.