Re: Light-Sport Aircraft Yahoo group Question for all Pilots

Bill,

What control surface controls the AOA of the wing in an airplane? 

 

The question was asked of a fixed wing plane.  It specifically said "airplane" in the original question.  However, in a trike, the concept is the same.  Your butt does not cause the trike to turn, it causes it to roll.  Then the horizontal component of lift causes the turn to occur.  The horizontal component of lift can be increased by increasing the AOA of the wing, and the AOA is increased by pushing the bar out.  Therefore, pushing the bar out is the way to increase the turn rate of a trike.  I demo this to students as we start steep turn training and they can see the difference in turn rate quite dramatically.  So, let's not confuse rolling and turning.  They are two different pieces of the puzzle.

 

Jim Bair

 

From: Bill Watson

Sent: Monday, March 05, 2012 10:15 AM

To: Sport_Aircraft@yahoogroups.com

Subject: RE: Light-Sport Aircraft Yahoo group Question for all Pilots

 

 

The question asked for a control surface, as opposed to a surface. If it were asking only for a surface - which one matters most - then the main wing would be it. By far the main wing is the largest component of lateral lift. Kind of tough to describe it as a control surface if it doesn't move.

Also this question assumes a fixed wing plane. The answer for a PPC is the outboard trailing edge. The answer for a blimp is actually the rudder. The answer for a trike is your butt (weight shift) =)~ 

Bill Watson

bill@part103.org

From: Sport_Aircraft@yahoogroups.com [mailto:Sport_Aircraft@yahoogroups.com] On Behalf Of Harold Burton
Sent: Monday, March 05, 2012 7:25 AM
To: Sport_Aircraft@yahoogroups.com
Subject: Re: Light-Sport Aircraft Yahoo group Question for all Pilots

 

And what part in a turn might dihedral angle in the wing play, if any?

Harold

KD5SAK

From: Jim Bair

Sent: Monday, March 05, 2012 8:48 AM

To: Sport_Aircraft@yahoogroups.com

Subject: Re: Light-Sport Aircraft Yahoo group Question for all Pilots

Firstly, I think we need to think about what a turn actually is.  I believe that in this context, the person who posed the original question meant a change in aircraft heading.  What does the airplane do when you make an aileron input?  Does it turn, or does roll? 

Jim Bair

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