Flight simulator rotating inertia online calibration system and calibration method thereof

The invention provides a flight simulator rotating inertia online calibration system, which comprises a translation limiting mechanism, a spring vibrator group, standard mass blocks, and a swing cycle measurement unit, wherein the translation limiting mechanism comprises a limiting bearing and translation limiting mechanism pillars and the limiting bearing is arranged at the mass center position of the flight simulator; the spring vibrator group is connected with an air flotation platform and the translation limiting mechanism pillars; the standard mass blocks are uniformly arranged on components of the flight simulator; the swing cycle measurement unit is connected with the flight simulator. The invention also provides a flight simulator rotating inertia online calibration method. the calibration system provided by the invention has the advantages that the structural friction moment is extremely little; the braking is convenient; rotating inertia online calibration measurement error influences can be almost