A-I-R ATOS Series Manuel d'utilisation - Page 14

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The optimum trim speed is between approx. 25 and 31 mph with a flap setting of 10-15°. To

familiarize yourself with the glider, a slightly higher trim speed is recommended for the first few

flights .

A ttention :

For the first flight assume that the glider is not trimmed perfectly. Select good launch conditions

and start with an aggresive run and proper angle of attack. Only check trim speed when you are

sufficiently high enough to recover from an accidental stall .

Once you have become familiar with the glider, the trim speed can be gradually adjusted starting

from the basic setting (see Chapter 5). To do this, the hang strap is moved in 0.2 inch steps as

described in Chapter 5 until the basetube is positioned between the tip of your nose and forehead

when flying at trim. Moving the hang strap forward increases trim speed, moving it back decreases

trim speed. The basetube must never be in front of your head in steady level flight .

If the glider bags are stored in the D-spar leading edge, the trim speed increases by about 6 mph.

This equates to a 0.2 inch forward change in hanging position. In this case, the hang strap must be

moved backwards by 0.2 inches.

6.5 Unusual Flight Conditions

Depending on size of the pilot, stalled flight begins when the basetube is pushed in front of the head.

Approaching stall may be noticed by a shaking tail unit. In addition, the control forces become "soft".

If this occurs, the basetube should be placed in the neutral position or pulled in slightly. The

ATOS-VRS LIGHT generally gently recovers .

If the basetube is pushed above your head, there is a risk of stalling. In level flight, the ATOS-VRS

LIGHT goes into deep stall, nods and recovers as soon as the base is pulled into neutral. However,

when turning and in turbulent air, there is a risk of one wing stalling, which can result in the aircraft

tipping over the wing and then spinning. This flight condition is dangerous and should be avoided

under all circumstances, as it can overload the structure .

When a stall begins, bring the basetube to the neutral position or pull in a little.

6.5.2 Tuck/Tumble

The glider can roll over (tuck) in turbulent air. The glider breaking or complete loss of control is then

possible. In turbulent air, always fly with a sufficient airspeed reserve. For added safety, pull the flap

a little, even in fast flight, about 5-10°. If conditions for flying are too turbulent, fly out of the

turbulence immediately and land if necessary .

Important: The glider structure can be overloaded by flying too fast in strong turbulence. The

maximum certified speed is 62 mph, but you should not fly this fast in strong turbulence.

The ATOS-VRS LIGHT light is not for suitable for motorized flying.

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