[NSRCA-discussion] Fwd: RE: Fwd: Thick trailing edges

[Bob Richards]

I forwarded the question to Robert Vess. Here is his reply:

"Robert J. Vess" <rjvess at mindspring.com> wrote:  From: "Robert J. Vess" <rjvess at mindspring.com>
To: "Bob Richards" <bob at toprudder.com>
Subject: RE: Fwd: [NSRCA-discussion] Thick trailing edges
Date: Tue, 16 Jan 2007 17:38:04 -0500

      Bob,
   
  In my airfoil design experience I have found that, generally speaking, thicker trailing edges add a little more aft loading to the airfoil.  So this in turn adds hinge moment, which means that the surface tries a bit harder to return to neutral.  So this can make it feel more "locked in" around neutral since it centers better.  This is in contrast to "softening the feel around neutral" as the message below reads.
   
  Robert
   
  

   
    ----- Original Message ----- 
  From: Bob Richards 
  To: Robert J. Vess
  Sent: 1/16/2007 9:52:46 AM 
  Subject: Fwd: [NSRCA-discussion] Thick trailing edges
  

  Robert,
   
  Any thoughts??
   
  Bob R.
  

Peter Pennisi <pentagon.systems at bigpond.com> wrote:
  From: "Peter Pennisi" <pentagon.systems at bigpond.com>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Date: Tue, 16 Jan 2007 23:32:49 +1000
Subject: [NSRCA-discussion] Thick trailing edges

How effective are thick trailing edges in softening up the feel of a surface
around neutral? Is it a fad or does it actually work.

I am putting together my second model with composite wings which have very
thin trailing edges (Comp-ARF -IMPACT). I have never been really comfortable
with the feel on my first model. I am thinking of removing some of the rear
wing to increase the thickness of the trailing edge (Should not be too
difficult - only concern will be if ailerons will be large enough to force a
decent snap)

The model came at the right price so it was always destined as a test bed to
try out some ideas.

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