Hi Kevin,
Sorry for the confusion, I should have mentioned that the sink numbers
were with the engine at idle, with an Airmaster prop. The sink rate can
be expected to be better with the engine off and prop feathered, which
we haven't had the opportunity to do yet. Our Europa motorglider has
noticeably greater sink at engine idle than the Katana Extreme we
trained on last fall. The Katana has a 914 with a two bladed prop, ours
is a 912S with three bladed prop. It may be the three bladed prop that
makes the biggest difference between the two planes (although the higher
compression 912S may also contribute to the difference). When we
changed over from the two bladed Whirlwind to the three bladed
Airmaster, the only noticeable change in performance between the two was
the braking effect at engine idle, with the Airmaster providing greater
braking.
We will get some engine off/prop feathered data as soon as we get a
weekend with suitable weather.
Regards,
Terry
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Kevin
Klinefelter
Sent: Friday, February 29, 2008 4:52 PM
Subject: Re: Europa-List: Motor glider first flight
Terry & Dave,
Congratulations!
I imagine that your sink rate tests were with the engine off and the
prop feathered?
Did the CG change with the long wings installed? Best LD will be found
near the aft limit.
Have you sealed the gaps in the wing root?
Glad to hear you guys are gliding... Kevin
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