Abstract: This report mainly presents an aerodynamic load estimating method which includes the interactive influences between aircraft structural components,and studies how to use this method to estimate all movable horizontal tail flight load. This method has been used to estimate all movable horizontal tail flight load of F-7in the symmetrical maneuver flight case. The esti- mated load is also compared with flight measured load. The compared results show 10% magni- tude difference between the estimated and measured loads.The estimating method and measuring method are validated each other by this comparison. Then this estimating method is also ex- tended to estimate flight loads on other components(wing,vertical tail,etc.)。

Key words: aerodynamic loads, estimating aircraft structures