It's not BS. For a detailed discussion on the subject see
http://www.auf.asn.au/groundschool/flutter.html and scroll down to "control
reversal." Generally this is not a factor below around Mach 0.3 (OK,
that's about 200 KIAS).
Best regards,
Rob Housman
A070
Airframe complete
Irvine, CA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of William Daniell
Sent: Friday, December 15, 2006 8:35 AM
Subject: RE: Europa-List: Vne Speed
Someone also told me that the Vne sometimes has to do with elevator
effectiveness - that is to say that above a given speed the elevator ceases
to work...
Anyone else heard this is it BS.
Will
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of nigel charles
Sent: Friday, December 15, 2006 06:31
Subject: RE: Europa-List: Vne Speed
>In Don Dykin's booklet about Europa aerodynamics he says that the flaps
take just about half of the plane's weight at top flap speed. With
aerodynamic forces increasing with speed squared I wouldn't want to rely
on
the flaps not failing before the wings, which have been tested to 10g
after
all!<
I assume that this statement is with the flaps extended. One presumes
that the load taken by the flaps is much less when they are retracted.
Nigel Charles
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