飛行データからの空力特性推定 (第3報)

出力誤差法に対応する説明変数誤差法

抄録

The “explanatory variables error method” (EVE method) proposed by this report is one of the three main analysis methods under the concept of the “in-flight wind-tunnel test”. The EVE method estimates the values of aerodynamic derivatives, using a multi-regression analysis under the assumption that the noises exist only in the explanatory variables data. This way of thinking about noises is same as the way in the output error method. This suggests that the estimation characteristics obtained from the EVE method can also interpret the contents of the results from the output error method. One of the main characteristics in the EVE method is that the multicollinearity caused by the inherent aerodynamic characteristics of aircrafts may occur in addition to the multicollinearities by the maneuvers and by the constraints due to the equation of motion.