----- Original Message -----

From: Sky2high@aol.com

To: lml@lancaironline.net

Sent: Thursday, October 3, 2013 2:04 PM

Subject: [LML] Re: LNC2 flaps at Reflex

Steve,

 

Let's see, using an isosceles triangle where the long sides represent the distance from the hinge center to the TE.  Then the similar right triangles formed within the isosceles triangle would result in the following calc:

 

2 x sin(.5 x angle) x side = tip movement or 2 x sin ((10-7)/2) x 11.75" = .61" = chord of the arc of movement. 

 

Thus, about .6"

 

Grayhawk

 

In a message dated 10/3/2013 3:37:59 P.M. Central Daylight Time, n5276j@aol.com writes:

GrayHawk,

 

My TE to the center of the hinge is 11.75" what would you guess the measurement up from the faired in position is to get the -10 degrees? You are right there is play on the small tailed 320-360.

 

Steve Alderman  N25SA

-----Original Message-----
From: Sky2high <Sky2high@aol.com>
To: lml <lml@lancaironline.net>
Sent: Thu, Oct 3, 2013 8:18 am
Subject: [LML] LNC2 flaps at Reflex

One small point.  On the ground the flaps are adjusted and faired in at -7 degrees.  In flight the effective angle is different as the flaps are reflexed further up by air loads that may well result in -10 degrees.  This may be simulated on the ground by manually lifting the trailing edge of the flap with it at its electrically powered fully reflexed position and measuring that angle as the effective flight angle.  Don't be timid in lifting the TE.

 

Grayhawk