[LASS Soaring] 2 channel contest series....time for a couple of articles for you guys

[Dion]

I have read everyone of these multiple times..  :-)

 

  _____  

From: soaring-bounces at louisvillesoaring.org
[mailto:soaring-bounces at louisvillesoaring.org] On Behalf Of
GordySoar at aol.com
Sent: Thursday, February 19, 2009 9:06 PM
To: soaring at louisvillesoaring.org
Subject: [LASS Soaring] 2 channel contest series....time for a couple of
articles for you guys

 

Okay so we have been getting pretty excited about this 2 channel contest
series....

But if you guys want to end up some decent scores, you'll need to get your
models tuned up.

 

NOT de-tuned so that they fly themselves, but tuned up so that you can fly
them...you know for a full 7 minutes and end up with them somewhere on the
landing tapes....Piloted.

 

Take a look at the articles, pay attention and think about your plane, and
end up with a season full of fun.

 

Lead in the nose is NEVER to be used to hobble a sailplane.  "Slightly Nose
Heavy" is NEVER an acceptable way to set up a contest sailplane....it is
however a way for lazy pilots to avoid being the pilot.

 

An inch forward or an inch back won't add or subtract soaring time by even
30 seconds in a 7 minute flight....but it will cheat you out of the
information that your sailplane wants to provide you about lift and sink..so
that you have to try to do all the work yourself.

 

I win because I have talented partners to call air for me....my sailplanes.
You try hard, but don't have my helpers.

CG is NOT some gimmick used to provide some stability factor or some
performance key.  We have lead in the noses of our sailplanes so that they
fall forward, instead of backwards in the air. If there is one dot more lead
in the nose than is needed to have them all in the right direction then they
will be falling forward and nose down...the only way to correct for that
unbalance is to run with some up elevator...all the time. Add some extra
airspeed and the nose is directed upward because the elevator gets stronger
with airspeed. Drop some airspeed and gravity grabs your models nose and
pulls it down.

 

Lift is rising air, it lifts the tail and the nose points down..and the
airspeed goes up....more airspeed and all your model's surfaces get
strong....cold air pushes the tail down....point the nose up, slowing the
model making the controls feel sluggish and un-responsive.  There are two
pretty important cues for you there about why some of us seem to be able to
sky out all the time.  We don't have a six sense about reading air, we are
reading the information supplied by our sailplanes.   Fast and lively? TURN,
slow and sluggish...DON"T turn. :-)


Read the articles if you want to improve your quality of life on the flying
field, then engage YOUR brain, then take a look at your models.  ALL
competition sailplanes will balance at 45% of root chord...Full house
unlimited, Genital Lady or DLG.  But incidence has to be zero'd. 


A full flying stab makes it all easy, but if you have a fixed stabilizer,
you have to engage your hobbyists brain:-)

 

Gordy
Marco Island Florida tomorrow, then soaring in Gainesville and Sarasota this
weekend. 70's with light winds

 

  _____  

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