Great article on this critical subject. It would be interesting to find out how
the Europa has been evaluated during flight testing of the prototypes,
especially
at what max altitude the Vd testing has been actually performed.
BTW it is always instructive to look at certificated aircraft manuals and see
how
they handle any issue. The attached page is from the Cirrus SR22T POH. It shows
how they handle the VNE/flutter issue at high altitude. The VNE IAS is reduced
linearly above 17500 ft. from 205 kts to 175 kts at 25000 ft. Very few Europas
are operated at such high altitudes, but it may be advisable for their
pilots to consider reducing their VNE as Cirrus do.
Surprisingly Cirrus also reduce the VNO above 17500 ft: obviously this has
nothing
to do with flutter, so why?
Remi Guerner
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=498831#498831
Attachments:
http://forums.matronics.com//files/v_limits_sr22t_120.png
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