Paul wrote:

OK folks I need your feedback on this. Are you learning anything from

this?

Is it clear what is going on?

Paul Lamar

I is a huge benefit to the whole group when someone like Dan volunteers
their time and expertise (and cool software toys) to provide an analysis of
an idea. Same goes for the team working on the LAEV prop and whoever
instruments any part of their system. You drive for a scientific systematic
engineered aproach is really starting to pay off.

>From my very limited knowledge of FEM it would seem that the leap from
statically modelling the pocketed redrive plate, to modelling the whole
mount system dynamically is a bit too big a step. The danger of FEM and CFD
is that you always get an answer, and they always look pretty, regardless
how well correlate with the real parts (CFD - Color For Directors).

The engineer is there to provide the assumptions, and determine the value of
the results. Dan, what is your feeling as to the probable accuracy of the
dynamic model given the simplifications/assumptions you made? Especially the
CoG and weight assumptions for the prop/redrive and engine would seem to me
to have a large scope for errors which would affect the natural frequencies.

Regards,
Mark

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