Optimal Selection of Stability Augmentation System Parameters to Reduce the Pilot Ratings for the Pitch Tracking Task.

摘要

A method for determining the optimal stability augmentation system (SAS) parameters for minimizing the pilot rating for the pitch tracking task is presented. The pilot rating prediction method is discussed. The Newton-Raphson method for finding the pilot parameters is introduced. The cost function used for finding the optimal SAS parameters is formulated to include SAS rate and deflection constraints. The optimization procedure is applied to the USAF/CAL T-33variable stability airplane. Two different SAS configurations (pitch rate and pitch rate plus normal acceleration) are examined for six different flight conditions. The results show that the pilot rating predictions are reduced and a comparison with the military specifications show that the short period handling qualities are improved. (Author)