Wills Wing Sport 2 155, Руководство по эксплуатации для владельца

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Speeds to Fly and Using Your Airspeed Indicator
The Wills Wing Hall Airspeed Indicator has been specially designed to help you fly your Sport 2 at the
proper speeds for optimum safety and performance, and is a recommended option for your glider.
There are four color coded bands on the ASI:
White: This is the range from 18 m.p.h. to 28 m.p.h.. This is the normal thermalling speed range
for light to moderate thermalling conditions. Try to keep your speed within this range when
thermalling in light to moderate conditions. Very strong or turbulent conditions will warrant a faster
flying speed.
Green: The top of the green region represents the placarded maximum rough air and maximum
maneuvering speeds. This speed of 46 m.p.h. should not be exceeded except in smooth air, and no
abrupt large control deflections should be used above this speed. In significant turbulence it is
recommended that you keep the airspeed “in the green” for best control and stability and best
structural margin at all times.
Yellow: This region represents the upper speed range between maximum rough air / maximum
maneuvering speed and the speed never to exceed. You should fly in this range only in smooth air
as described above.
Red Line: This is your never to exceed speed. At no time should you fly faster than this speed.
The design of the Hall type airspeed indicator involves using a ram air versus static
pressure differential to raise a disc in a tapered tube against the force of the weight
of the disc. Because of this the ASI has certain operating limitations:
a. It is only accurate in one G flight. If you are turning at a bank angle of more than 30
degrees, the ASI will read artificially low as a result of the G loading of the turn. Reliance
on the ASI for limiting airspeeds in high banked sustained spiral maneuvers will likely
cause you to exceed the placarded speed limitations of the glider and will compromise
your safety.
b. It is only accurate when within 15-20 degrees of the vertical orientation.