No such thing as a daft question, Ira.
The inertia (rotational) is important _a _because of the gyoscopic loads
on the prop shaft and _b_ the vibrational aspects, torsional resonance
etc. There are many different props out there, some not well know, home
built even. That's why the question is on the standard inspection form.
Graham
irampil@notes.cc.sunysb.edu wrote:
>
>Does it ever help to question why, with a completely
>defined, well tested in hundreds of A/C, prop-engine combination,
>an inspector would ask for such a datum.
>
>Ira N224XS
>FAA AME
>
>
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