5 Steps to Trimming a Pattern Plane

[Don Szczur]

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
      ----- Original Message ----- 
      From: Lance Van Nostrand 
      To: discussion at nsrca.org 
      Sent: Sunday, November 21, 2004 10:48 PM
      Subject: Re: 5 Steps to Trimming a Pattern Plane


      Don,
      I don't understand the throttle to elevator/aileron mix issue.  I've not seen this as a way of correcting things.  I would assume the T/E mix is to reduce tuck to the belly or canopy, but I'm used to using wing incidence for this.  If the plane rolls on downlines then we are usually dealing with a twist in the wings/stab or both.  

      confused..
      --Lance

        ----- Original Message ----- 
        From: Don Szczur 
        To: discussion at nsrca.org 
        Sent: Sunday, November 21, 2004 8:53 PM
        Subject: 5 Steps to Trimming a Pattern Plane


        I came accross this link and thought it may be helpful for those who are setting up a pattern plane in the near future.

        http://www.horizonhobby.com/Explore/Article.aspx?ArticleID=1194

        Don
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