[NSRCA-discussion] Was quiet: Now Judging / Performing StallTurns

[Earl Haury]

Larry

If I'm reading your post right - you describe a perfect stall turn (as far as the yaw rotation goes). The same works in a cross-wind, except the wind compensation will show fewer yaw degrees in attitude - but the line reversal will be the required 180 deg. 

FAI rules require the rotation to be about the CG with 1 pt downgrade per 1/2 wingspan "opening" (airplane needs to track the same line up and down for best score)  - AMA rules allow 1/2 wingspan before downgrading. FAI (for 2008 - ) have added a requirement to downgrade if the airplane "skids" on the upline. Both require downgrading a "pendulum" movement on the downline. Neither FAI nor AMA require that the airplane be stopped on the upline before rotation, except that much speed will result in the "skid".

Proper stall turns aren't accidental - proper technique (and enough rudder) will get them right every time. Probably the reason the "tight" stall turn looks strange is that most others are vulnerable to downgrades for being too open.

So - what Jason says.

Earl


  ----- Original Message ----- 
  From: Lisa & Larry 
  To: 'NSRCA Mailing List' 
  Sent: Saturday, November 24, 2007 8:30 PM
  Subject: Re: [NSRCA-discussion] Was quiet: Now Judging / Performing StallTurns


  OK.I've been wondering about this.

   

  Watching some of the Masters and FAI perform Stall Turns it looks like the plane is climbing then rotates like someone put a pin in the center of the fuse and turned it around 180. I don't recall if this is during strong cross winds or not. If I were to assume the role of a judge it may be close to a wing over if the wind was calm. But then some are nearly straight down the same line up line.

   

  So, what's the trick or am I missing something that should actually be downgraded?

   

  On a personal note, I will flop more often than I want. At least once in a contest.

   

  Now let's get some noise.vbg.

   

  Larry

   


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  From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Scott Anderson
  Sent: Saturday, November 24, 2007 8:01 PM
  To: NSRCA new
  Subject: [NSRCA-discussion] quiet

   

  Everyone recovering from Thanksgiving?  list is quiet..

   

  529



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