Simulation of Structural Bending of Large Aircraft

摘要

Large aircraft may possess slow structural modes that can affect handling qualities if excited. Little has been done to simulate these structural modes during pilot-in-the-loop analyses. A fast and simple method to simulate the longitudinal structural modes of large aircraft has been developed. A shape function for fuselage was obtained from a finite element model. This deflection function was used to develop transfer functions for flight simulation. The transfer functions were developed in a method similar to that used at NASA dryden Flight Research Center. Flight simulations were developed to explore the effects of the structural modes on handling qualities of the aircraft in question These calculations were validated by correlating wind tunnel data with simulation predicted data.