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There ate two things that identify Vne, structural
loads and flutter.
The lower of the two will determine the published
Vne.
The structural limit is determined by
IAS.
The flutter limit is determined by
TAS.
I have not been able to find a clear statement of
how the flutter speed of the Lancairs was determined.
Wolfgang
----- Original Message -----
Sent: Monday, July 16, 2012 8:12 AM
Subject: RE: [LML] TAS for Red Line
I've never met a light aircraft
instrument system that had a primary airspeed indicator with anything *other*
than IAS, and just one
redline value.
My
Sailplane is licensed in the Standard category. The required airspeed markings
show Vne at a variety of altitudes. In this sailplane Vne reduces quite a bit
at FL180 and at FL250. As you stated the Vne numbers are IAS
values.
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