Precision Aerodynamics Pl 3001, Руководство пользователя

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Selecting the
R i g h t C a n o p y .
Weight and See
This provides information on
canopy and the ways in
which Performance varies with exit
weight. Use this information to select
the proper canopy for your weight
to ascertain how the
and
flight behavior of
your canopy will vary depending upon
where your weight falls along the
acceptable range. Although some
weights may fall within the
acceptable range for more than one
canopy size, Precision recommends
you the canopy for which
your listed weight is not at one
extreme or the other of allowable
Low AR
High AR
weig hts.
Choice One:
Canopy?
Your first decision in selecting a
canopy will be choosing an
Aspect
Ratio (AR). A AR (it means a
wider side-to-side, or
span
compared
to the front-to-back or
measurement) less drag for
a given amount of which results in
a more design.
AR canopies (Precision’s
for example) exhibit
significantly in one
area: a improved
Lift-to-Drag ratio
the
drag for a given lift
requirement is even less.
For equal canopy areas, these
canopies provide more “glideability”
than their smaller, more “Square”
counterparts. This is
gained at the expense of some of the
more familiar characteristics of
traditional canopies. The
Performance may demand more from
the Operator: more judgment; more
planning; more landing area. The
high-AR canopies deliver more
forgiveness in selecting an exit
but in return require more accuracy
final and a longer
area for the landing flare. If “nailing”
the target is your bag, or for tighter
landing spots such as those
encountered in most demonstration
jumping, you may not prefer a canopy
with a super-high Aspect Ratio.
P
RECISION
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