5 Steps to Trimming a Pattern Plane

[Chris Larson]

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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