[NSRCA-discussion] Unknowns

[Don Ramsey]

Want to see the Unknowns they flew in Albuquerque last weekend? Looks like a
difficult sequence.  I've got it posted on the contest page at 

http://pages.suddenlink.net/donramsey

 

Don

 

 

 

From: NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org] On
Behalf Of John Ford via NSRCA-discussion
Sent: Monday, September 08, 2014 6:58 AM
To: w d; General pattern discussion
Subject: Re: [NSRCA-discussion] Snaps

 

Hard to believe no discussion on a snap thread.that's a first. 

 

I watched the French Connection video with interest since they were very
much at the top of the airshow list at around the time I was into full-scale
aerobatics. 

We always figured that FC was able to pull off the "snap-on-the-deck" stunt
because of the CAP-10's airfoil, which was closer to a glider airfoil than
to an acro airfoil. Hence the deep wallow before the autorotation that
results in the displacement of the flight path.to their advantage in this
case. They used to do the two-plane formation snap on take-off, which always
impressed me to no end.

If you watch Patty Wagstaff do a snap, with a thin, fully-symetrical airfoil
and added full-span stall strips, her snaps become virtually identical to
the FAI "twinkle snap". A Pitts S-1 is somewhere in between. The Citabria,
needing full "con" ailerons, will pause for a split second, then autorotate
in a flash with surprisingly little displacement. So 10 different planes
will all autorotate differently, some imperceptibly. Accordingly, many
full-scale pilots snap with ailerons "pro" instead or with the traditional
ailerons "con". Heck, most full-scale competitors get 10's on spins and they
are literally flying/slipping the plane down the spin.never having stalled
at all. 

 

So for pattern, if it slows down for a micro-second, and the tail describes
a cone, I call it good, even though I still can't do it that well myself...

 

John

 

On Sep 7, 2014, at 1:25 PM, w d via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:





well since masters is know taking on traditional FAI maneuvers" rollers and
such".. the twinkle snap will become the standard in AMA ...I will be doing
one in the upline snap from now on...



gary  

 

On Sun, Sep 7, 2014 at 9:38 AM, Chuck Hochhalter via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:



Well Don, that really didn't fire up a lot of enthusiastic discussion. I
guess after Nats it's don't ask don't tell.

 

C

Sent from my iPhone


On Sep 6, 2014, at 6:28 PM, flyintexanmark at gmail.com via NSRCA-discussion
<nsrca-discussion at lists.nsrca.org> wrote:

Very revealing. Thanks Don.

 

Regards,

 

Mark Hunt

 

----- Reply message -----
From: "Don Ramsey via NSRCA-discussion" <nsrca-discussion at lists.nsrca.org>
To: "'General pattern discussion'" <nsrca-discussion at lists.nsrca.org>
Subject: [NSRCA-discussion] Snaps
Date: Sat, Sep 6, 2014 3:57 PM

 

I just watched CPLR and Mayer doing snaps on video. The entire video is
their snaps.  If you are interested, here's the link
http://www.rcgroups.com/forums/showthread.php?t=1443881
<http://www.rcgroups.com/forums/showthread.php?t=1443881&page=2> &page=2

about half way down the page.  A good exercise is to watch both videos and
record your thoughts. Then get a thin piece of straight wire and overlay the
track of the models when they snap. See if your views change. The ability to
replay a short segment is a help.

 

Especially watch the snaps at 1:40 for CPLR and about 2:00 for Mayer. What
do you think? Note the post just after Mayer's video.

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