A-I-R ATOS Series 운영 매뉴얼 - 페이지 15

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7 Maintenance

The ATOS-VRS LIGHT is made of mostly fiber composite materials. In contrast to aluminum and

steel, carbon fiber materials show a different fracture behavior. Mostly due to their ductile behavior,

metallic materials allow damage detection through deformation. However, dynamic loads can make

it difficult to detect cracking.

In the case of composite fiber materials, damage caused by deformation cannot be detected. Other

methods of damage detection must be used, such as checking for soft spots on the carbon fiber

surfaces. Also cracking and delaminations are indications that immediate repair is needed. For

these reasons, in the event of damage, contact an AIR-authorized test center and have a glider

check performed.

In general, a comprehensive glider check should be carried out at an authorized AIR test center

every 2 years. In between, however, it is essential to carry out the following maintenance work

yourself. If anything is unclear, contact the manufacturer or an ATOS dealer.

7.2.1 Spoilers

The spoiler ropes are located on the backside of the spar and activate the spoiler. After the first few

hours of flight, the knots and control ropes settle and slightly stretch. The stretching has no impact

on flight safety, but should be addressed to keep the handling crisp. Align the wing horizontally and

shorten the spoiler ropes on both sides. To do that undo the knot on the spoiler lever's shackle,

tighten the rope and tie it again. Attention: Don't forget the safety knot.

After adjusting the spoiler ropes, check the adjustment of the stopper rope, which limits the

maximum deflection of the spoiler (see chapter 7.2.2).

In order to keep the loads reasonable on the spoiler rib and spoiler lever, the spoiler rope has a

stop. The maximum spoiler deflection is limited by the stopper rope, which is attached between the

control cable and the control rib pulley. At full deflection of the spoilers or during a hard landing in

which the control frame is deflected sideways, the spoiler stop rope prevents excessive loads.

Pulling the spoiler string should deflect the spoiler lever 80° to 90° to the sail surface. In this

position, the stopper rope must be tight. If the stopper rope is too short, the deflection of the spoiler

is too limited, which has a negative effect on roll time. The stopper rope must be adjusted to the

appropriate length by adjusting the knots. If the stopper rope is too long, spoilers and sails can be

damaged by over deflecting.

The maximum spoiler deflection should be checked before each flight by lifting the wing leading

edge or shifting the control bar to each side as much as possible.

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