ON THE ADEQUATE MODEL FOR AIRCRAFT PARAMETER ESTIMATION by

The problem of the selection from measured data of an aircraft of an adequate model which v.ould he the simplest and sufficient approximation to the correct model and which would facilitate the successful determination of the unknown parameters is discussed. Two v/ays for the proper model structure verification are recommended, namely sensitivity analysis and/or testing of a hypothesis as to the significance of unknovm parameters in the model proposed, and the analysis of residuals. Finally some approaches towards the assessment of parameter and adequate model accuracies are proposed. The procedures mentioned are demonstrated in an example