[NSRCA-discussion] A question for the experts

[Ronald Van Putte]

We don't need no more $#@! Master class guys!

Ron

On May 27, 2011, at 11:04 AM, Scott McHarg wrote:

>
>
> Warmest Regards,
>   A soon to be Masters guy
>
> On Fri, May 27, 2011 at 10:23 AM, Glen Watson  
> <ghwatson at comcast.net> wrote:
>
>
> Dave, presents a good argument to fly FAI vs. AMA...AMA is judge more
> harshly.
>
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Dave  
> Lockhart
> Sent: Friday, May 27, 2011 10:12 AM
> To: 'General pattern discussion'
> Subject: Re: [NSRCA-discussion] A question for the experts
>
> Matt,
>
> If you are judging by the rules, your answer must be different for  
> FAI -
>
> 5B.8 WIND CORRECTION
> All manoeuvres are required to be wind corrected in such a way that  
> the
> shape of the maneouvre as described in Annex 5A.  is preserved in  
> the model
> aircraft's flight.  The exceptions to this grading criterion are in  
> the
> stall turns, and spins, where the model is in a stalled condition.
>
> My opinion is that the AMA book should be updated to be consistent  
> with the
> FAI book on this topic, and the FAI book is clearly better suited  
> to the
> real world dynamics of stall turns in windy conditions.
>
> To answer Don's original question -
> For AMA, by the book, - the maneuver is downgraded for drift.
> For FAI, by the book, - the maneuver is not downgraded for drift.
>
> Regards,
>
> Dave Lockhart
>
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
> mjfrederick at cox.net
> Sent: Friday, May 27, 2011 8:53 AM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] A question for the experts
>
> I'm not sure where the notion came from that wind drift during a  
> stall turn
> is not downgraded. In AMA judging criteria the only maneuver that
> specifically mentions that no downgrade is given for wind drift is  
> the spin,
> and that is only DURING the stalled portion of the maneuver. In a  
> "stall"
> turn there is no true stall of the wing as there is in a spin. If  
> flown with
> the proper wind corrections on the up- and down-lines there should  
> be no
> noticable deviation in distance. If there is, the maneuver should be
> downgraded because the pilot failed to make the proper wind  
> correction. Even
> if there was a slight drift during the 180 turn at the apex of the  
> lines,
> the pilot should recognize that and incorporate the proper  
> adjustment to the
> downline to bring the aircraft back to the original starting  
> distance. To
> me, it's no different than turbulence that might cause the aircraft to
> temporarily deviate from straight and level flight. Adjustments  
> must be made
> to return the airplane to th  e original line. I don't feel like  
> pulling up
> the FAI rule book, so I just won't go there, but I'm not sure if my  
> answer
> would be any different.
>
> Matt
>
>
> ---- tocdon at netscape.net wrote:
>
> A question for the judging experts.
>
> Figure M, both Masters and FAI- Yes I know the bottom line rule the  
> best
> presentation gets the best score, but a technical question.
>
> Maneuver flow  in a crosswind.  Plane starts maneuver at 140 meters  
> distance
> out.  During the first stall turn the plane drifts out (recall this  
> is a
> stalled maneuver); second stall turn the plane drifts out again  
> (same).  Now
> the plane wind corrects in all other aspects of the maneuver but exits
> approximately 20 meters further out than the entry and no defects  
> observed,
> but exit distance is 160 meters.  What is the score given for this  
> maneuver?
>
> Best Regards,
>
> Don
>
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>
>
> -- 
> Scott A. McHarg
>
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