Research on Rigid–Elastic Coupling Flight Dynamics of Hybrid Wing Body Based on a Multidiscipline Co-Simulation

Due to the special aerodynamic layout and mass distribution, natural frequency differences between hybrid wing body (HWB)’s rigid-body motion modes fuselage structure elastic are smaller compared conventional aircraft, resulting in disappearance of decoupling relationship HWB’s airframe structure. For above reason, traditional analysis approach based on assumption is no longer applicable when analyzing flight dynamics an HWB a shift must be made method that takes into account aeroelastic effects. Therefore, this paper, time-domain co-simulation program combining computational fluid (CFD) with (CSD) (RBD) developed investigate effect rigid–elastic coupling more advantageous calculation unsteady aerodynamics existing methods analysis. By means technology, paper completed series simulations, which influence short-period dynamic characteristics aircraft was studied.