lml@lancaironline.net Mailing List Archive

So I happened to be looking for something unrelated in the FB manual and came across this on page 10-24:

"Lancair flaps are full electric actuated. They are designed to run from +45 down to -10 up (reflex). Note that the 'faired in position' for flaps is actually a -7 deg reflex position. ....."

My standard build manual is in storage so I could not compare. It would appear the intent was to be able to go to -10 degrees after all.

Chris Zavatson

N91CZ

360std

http://www.n91cz.net/

From: Christian Meier <lancair@meier.cc>
To: lml@lancaironline.net
Sent: Tuesday, September 24, 2013 3:19 AM
Subject: [LML] Re: Lancair 320/360 performance and stability

Chris,

today I made a picture during Cruise with Autopilot at 7500ft with following configuration:

770 kg 40l in header, 20l in each wing (80l total), 75kg and 83kg for pilot and co.

Flap was on 7° reflex CG 26,20"

My design CG is 22,8 - 30,3 from firewall back, horizontal was installed - 0.6°

So it looks like if I would add more reflex than 7°, I would need more down elevator.

So the gain with the higher reflex would be lost with the down elevator....

Christian