In-situ calibration data processing for gas controllable engine

The structure of the test system for gas controllable engine was introduced and the thrust test model was analyzed and established. The calibration data processing algorithms based on the simplified model and the precise model were proposed and the uncertainty was evaluated for both means. The results of the in-situ calibration data processing show that the simplified model algorithm can be used as a rough calibration data processing method as it's relative uncertainty is 2.06%. The precise model algorithm can get more precise calibration coefficients as the relative uncertainty is improved from 2.06% to 0.31%. In addition, the precise model algorithm can reflect some in-situ factors such as difference of channel sensitivity, coupled extent of moveable frame and position error, requiring less test-bed debugging work.