lml@lancaironline.net Mailing List Archive

I don’t want to start a firestorm here but I found this in the 320 plans. This addresses the ailerons specifically.

Page 10-14.

Still ambiguous I think. Saying that, it appears they’re saying trailing edge up, leading edge down, is acceptable. Trailing edge down is not acceptable. You see it this way?

Jim

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Jim Nordin
Sent: Tuesday, February 21, 2012 10:31 AM
To: lml@lancaironline.net
Subject: [LML] 360 rudder balance

Hummmm … correct me if I’m wrong.

Balance of control surfaces is attained when the component (aileron or elevator for example) hung at the center of rotation and given a perturbation (trailing edge pushed down) minimally returns to the level condition or better a small nose down condition. Any other condition (leading edge high above level, trailing edge below level) warrants adding weight to make the nose (leading edge) to settle below level.

Nose heavy is the point here. Any other condition may result in flutter.

Jim

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Charles Brown
Sent: Tuesday, February 21, 2012 8:02 AM
To: lml@lancaironline.net
Subject: [LML] Re: 360 rudder balance

They should stay in any position where you let them go. They should not return to level. If they are out of balance, they will have some preferred orientation (as you say, will move up or down).

Charley Brown

MS Aero/Astro Engineering

On Feb 20, 2012, at 6:51 AM, Bill Bradburry wrote:

I have a question about balancing the flight surfaces. If they are in balance, should they return to level from where ever you move them to, or should they just stay where you put them.

I assume that if they are out of balance they will either move up or down from level depending on whether you need to add or remove weight.

Bill B