[NSRCA-discussion] Aero design question

[JShulman]

If I remember correctly, I think everything was a full flying surface on it.
I think Chip said is was smooth but wouldn't spin/snap.

Regards,
Jason
www.jasonshulman.com
www.shulmanaviation.com
www.composite-arf.com

  -----Original Message-----
  From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Terry Brox
  Sent: Tuesday, September 05, 2006 1:42 PM
  To: NSRCA Mailing List
  Subject: Re: [NSRCA-discussion] Aero design question


  Didnt Merle Hyde build a Dash 5 with complete wings movement for ailerons?
    ----- Original Message -----
    From: george w. kennie
    To: NSRCA Mailing List
    Sent: Tuesday, September 05, 2006 12:16 PM
    Subject: Re: [NSRCA-discussion] Aero design question


    I swear I've bought some ARF's that had helical ailerons. Trust me, It's
not all that it's cracked up to be! (or maybe that was a mis-statement).
    G.



      ----- Original Message -----
      From: John Pavlick
      To: NSRCA Mailing List
      Sent: Monday, September 04, 2006 11:20 PM
      Subject: Re: [NSRCA-discussion] Aero design question


      Yeah, or do the "flexiron" thing. You can make all kinds of cool
shapes with 3 servos. The flexible aileron will interpolate the rest of the
curve (somewhat). Think about it. Hey, maybe we should actually try this.

      John Pavlick
      http://www.idseng.com


        -----Original Message-----
        From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of
Rcmaster199 at aol.com
        Sent: Monday, September 04, 2006 11:04 PM
        To: nsrca-discussion at lists.nsrca.org
        Subject: Re: [NSRCA-discussion] Aero design question


        Now John may be on to something here....3 servos driving each
aileron on a pattern plane. HMMMMM!!!

        If helical is what you want, cut the aileron 3 ways, proportional
areas in each segment of course and drive it with Johns 3 preprogrammed
servos. And you can use the smallest, fastest servos around so your response
will be outasight. That's the ticket laddie, Ahuh....

        VBG

        I think I'll open another bottle of Rafanelli '02, and continue
toasting :)

        Matt


        In a message dated 9/4/2006 10:50:47 PM Eastern Standard Time,
jpavlick at idseng.com writes:
          Now that sounds like the way to go! Except I think you actually
need 3 servos to do it right. I'm setting up the mix on my 12z now...

          John Pavlick
          http://www.idseng.com/


            -----Original Message-----
            From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of george w.
kennie
            Sent: Monday, September 04, 2006 9:55 PM
            To: NSRCA Mailing List
            Subject: Re: [NSRCA-discussion] Aero design question


            For cryin' out loud, if your going to go to all that trouble,
use two servos per panel at the opposing extremes of each flexible aileron
driving in opposite directions. Now that's HELICAL !!!!!!!!!!!!!!!  What the
heck have you guys been smokin' ??????????????  And I thought I was extreme.
Are we in the "Twilight Zone" here?  BGw?
            G.




              ----- Original Message -----
              From: Lance Van Nostrand
              To: NSRCA Mailing List
              Sent: Monday, September 04, 2006 9:05 PM
              Subject: Re: [NSRCA-discussion] Aero design question


              Helical pitch ailerons!  Nat, this is brilliant.  Instead of
making stiff ailerons, make them to flex.  glue the tip to the wing tip and
drive the root end.  Ailerons would work just like a 74x6 propeller.

              --Lance

                ----- Original Message -----
                From: Nat Penton
                To: NSRCA Mailing List
                Sent: Sunday, September 03, 2006 9:31 PM
                Subject: Re: [NSRCA-discussion] Aero design question


                Hey Tom
                I'm not providing solutions - just putt'in more wood on the
fire. In steady state roll the least drag position of the ailerons would be
constant AOA root to tip. This would call for the percentage of chord to
progress linearly so that it would be double at the tip vs the mid span
position - no different than helical pitch. A ( severe ?) negative would
occur, though, when the ailerons are initiated, potentially causing a tip
stall.

                Martin Simmons provides a curve showing Cl vs % of chord for
the aileron. Going over 20% doesen't get you much for the dollar - just much
more servo wear and tear ( especially with the 160 <G> ).

                IMO it is not worth the extra work to stop the ailerons
short of the tip.                            Nat


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