This is
also how the extended tips on Glasairs work out. Under 7-8K the extended tips
cost you a knot or three, higher than that, the extended tips are faster. They
do however, cut the roll rate from 270/sec to 180/sec.
-----Original Message-----
From: Lancair Mailing List
[mailto:lml@lancaironline.net] On Behalf Of Chris
Zavatson
Sent: Monday, October 26, 2009
12:25 PM
To: lml@lancaironline.net
Subject: [LML] Re: Wingtip
extensions for 320/360?
<<-faster speeds at all
altitudes (lower angle of attack at all speeds)>>
At lower altitudes the added skin
friction drag will dominate while at higher altitude the higher induced drag
will dominate.
Expect to see lower speeds at low to
mid altitudes and higher speeds at high altitudes.