MAINTENANCE MANUAL ASTIR CS
Rev. 9 28. Nov. 2005
9
Weights and moments of the control surfaces
The weights and the moments of the control surfaces must not exceed the following
values:
ASTIR CS (Serial No. 1002 - 1536)
Elevator .................................... 10,00 – 15,00 kgcm ...................... 2,40 – 3,25 kg
Rudder...................................... 13,65 kgcm ± 10% ........................ 3,20 kg ± 10%
Aileron ...................................... 16,00 kgcm ± 12% ........................ 4,10 kg ± 12%
The moments must be measured with the control surfaces removed. To determine the
moment M = P x r the surface should be mounted at the hinge line with the minimum
friction possible. The force P can be measured, for example, using a letter scale. If
these values are exceeded the mass balance should be increased. Before carrying out
repairs which for example involve charging the mass balance on a surface the
manufacturer or his repair agent should be consulted.
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