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Old 17th Aug 2014, 23:29
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AirRabbit
 
Join Date: Apr 2005
Location: Southeast USA
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For whatever it is worth, the following is quoted directly out of the regulatory requirements for flight control tests for airplane flight simulators.

It should be apparent to anyone that these tests, when competently completed satisfactorily, should verify that the control “feel” in the simulator should be VERY much like that in the airplane.

Static Control Tests:
Conducted in Ground Conditions
There are objectively measured tests for controls in all simulators. For example, the Roll Controller Position vs. Force and Surface Position Calibration test repeats what was actually conducted on an operational airplane. The test is conducted by recording the results of the aileron position and the spoiler angle while the cockpit roll controller (the wheel or side stick) is moved throughout an uninterrupted control sweep, meaning that the control (wheel or stick) is moved from neutral position to either the full left or full right position to the stop, and then reversed to the other stop, and finally back to the center position. Throughout the control displacement from minimum to maximum aileron/spoiler displacement in both directions, the position of the control wheel/side stick and both left and right aileron and associated spoiler positions are recorded, as is the pressure necessary to move the control wheel/side stick. The comparisons are to be exact to within the following limitations: ±2 lb (pounds) or 0.9 daN (deca-Neutons) for the breakout force (the force required to initiate movement); and then throughout the recording, ±10% or ±3 lb (1.3 daN) force, ±2° aileron, ±3° spoiler angle. These test are then spot-checked against in-flight data from tests such as, as engine out trims, or steady state sideslips.

These values are applicable to all 4 levels of airplane flight simulator, Levels, A, B, C, and D.

Dynamic Control Tests
Conducted in Takeoff, Cruise, and Landing conditions.
For underdamped systems: ±10% of time from 90% of initial displacement (0.9 Ad) to first zero crossing, and ±10 (n+1)% (where “n” is the sequential period of a full cycle of oscillation) of period thereafter.
±10% amplitude of first overshoot, applied to all overshoots greater than 5% of initial displacement (.05 Ad), ±1 overshoot (first significant overshoot must be matched).
For overdamped systems: ±10% of time from 90% of initial displacement (0.9 Ad) to 10% of initial displacement (0.1Ad). For the alternate method see paragraph 4 of this attachment. The slow sweep is the equivalent to the static test 2.a.2. For the moderate and rapid sweeps: ±2 lb (0.9 daN) or ±10% dynamic increment above the static force.

Data must show normal control displacement in both directions. Tolerance applies against the absolute values of each period (considered independently). Normal control displacement for this test is 25% to 50% of the maximum allowable roll controller deflection for flight conditions limited by the maneuvering load envelope

These values are applicable to Level C and Level D simulators.
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