Subject: Builing a scaled up Phantom/North Shore Extreme
Message-ID: <1993Feb1.165640.6369@midway.uchicago.edu>
From: ar12@quads.uchicago.edu (Andre Robotewskyj)
Date: Mon, 1 Feb 93 11:56:40 EST
Organization: University of Chicago

Hi there,
I've decided to build a 16' scaled-up version of the Phantom, and have a
quick question regarding sail shape- I assume the sail w/panels is
drawn out flat at a slightly higher wing aspect ratio, therefore
when the kite is assembled with spreaders in place (aspect ratio of
assembled kite < aspect ratio of flat, spread-out sail) there results
a certain amount of sail "slack" increasing towards the trailing
edge (slack is of course taken up by stand-offs)- My question, then
is this- how much slack should I design into the sail- ie: angle
at apex of assembled kite is approx 100 degrees; what angle should I
use in design of the "flat" sail? Is +10 degrees too much?
Thanks,
Andre
.




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