> My Airmaster at idle gives 600-700fpm as
> well. I haven't been brave enough to stop the engine yet to
> check the difference! I would be interested to know the
> difference in ROD between prop stopped and prop feathered.
> Even with these figures it gives a glide angle of about 1:11
> which isn't bad.
We checked the glide ratio of N135TD (an XS with a Whirlwind prop) last
year at 65KIAS and found 10.6:1 with the engine at idle, and also with
the prop stopped. We haven't repeated the test yet with the engine off
and the prop windmilling.
Dave DeFord
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