5 Steps to Trimming a Pattern Plane

[Wayne Galligan]

I fought the pull to canopy on the down line thing with all the recommended changes, cg shift, incidence change, down thrust and could not get it out completely and ended up with about 3% elevator to throttle idle mix and now I have a great flying airplane.  Sometimes tuning out the one tendency can affect other more important conditions.  Seems there are a lot more people out there that do the same thing. They just wont admit it.  Since I got back in the pattern arena it has been the consensus that an airplane be built with no mixing.  As much as I agree with this philosophy I tend to lean toward the what ever it takes to fly good strategies since I am not about to completely redesign an already built airplane. 

Lance the mix I have does not effect the overall flying characaristics enough to have to push the stick an unwanted amount.   So far the airplane hasn't complained.

Smooth FLying...

Wayne Galligan

  ----- Original Message ----- 
  From: Chris Larson 
  To: discussion at nsrca.org 
  Sent: Sunday, November 28, 2004 10:22 PM
  Subject: RE: 5 Steps to Trimming a Pattern Plane


  I have been using this mix in practice the last couple weeks ( practicing Intermediate and trying to learn the Advanced sequence ) and it has helped me tremendously.  It does not take much.  I P-mixed in 3 degrees of down elevator at high idle, and the downlines on stall turns, humptys, etc, are arrow straight with no input. I notice it a little on the spin entry but can't say as though it helps me there.   I am usually trying so hard to stall the plane, I am using more "down" to push the nose up ( plane is inverted ). I do also notice it slightly at landing, but its extremely easy to compensate for.
  Aircraft is a Typhoon 2 + 2, with OS 1.60, fyi.
  Chris Larson
  L & D Sales
  209-274-2176 Office / Fax
  209-304-0865 Cellular 
    -----Original Message-----
    From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On Behalf Of Rcmaster199 at aol.com
    Sent: Sunday, November 28, 2004 8:01 PM
    To: discussion at nsrca.org
    Subject: Re: 5 Steps to Trimming a Pattern Plane


    If I read both your commentaries correctly, the elevator mix when at idle, to help eliminate the up pitch of the down line, should also help the inverted spin entries. Particularly on a nose heavy plane (or one with considerable pos incidence), it seems to me that down elv mix at idle should help both conditions. What did i miss?

    MattK


    In a message dated 11/28/2004 9:34:36 PM Eastern Standard Time, dszczur at maranatha.net writes:
      Lance, thanks very much for the comments.  Bottom line is do what ever it takes to make the plane fly the way you want it to.  Mechanical, or electronic, or both. The vertical stab helps to stabilize in neg spin entry, and because I fly nose heavy, I don't feel the extra down mix in a spin entry.  Now, realize I don't have very much mix in... so that is less of an overall factor.

      Don
        ----- Original Message ----- 
        From: Lance Van Nostrand 
        To: discussion at nsrca.org 
        Sent: Friday, November 26, 2004 1:14 AM
        Subject: Re: 5 Steps to Trimming a Pattern Plane


        Don,
        Clearly this works for you, but I am still unconvinced.  Wouldn't more pos incidence in the wing, to assist spin entries, only work for upright spins?  FAI has inverted spins, and this should work in the opposite direction.  Same goes for the Throttle/Elv mix. When you reduce throttle to enter the spin, the elv mix that was put in for downlines might affect your spin approach.  And when the spin entry is inverted you'll have to really get on the down elv to maintain level approach.  I guess it can work, but it seems like its introducing factors that make the pilot begin to fly against the mix.
        --Lance

          ----- Original Message ----- 
          From: Don Szczur 
          To: discussion at nsrca.org 
          Sent: Monday, November 22, 2004 10:29 PM
          Subject: Re: 5 Steps to Trimming a Pattern Plane


          Lance, incidence may take care of pitch or roll, but not always.  In fact, I found that changing wing (panel) incidence has the most dramatic impact on slow flight, such as entries to a spin.  CG and wing balance also play some part in this mix. The electronic mixing takes care of what incidence changes, (wing warping, etc.) will not address in a down line, or, if you choose to just electronically dial out the tendency.

          Cheers!

          Don
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