Analyzing Lateral and Directional Static Derivatives of Flying Wing Based on Conceptual Design

To estimate the lateral and direction static stability of flying wing,a numerical calculation model of aerodynamic derivatives is developed based on aircraft geometry parameters from the conceptual design phase.An example for aerodynamic derivatives is given.A comparison of the numerical calculation results to predicted aerodynamic derivatives by a computational fluid dynamics(CFD-FASTRAN) method and wind-tunnel testing data shows that the numerical calculation method based on an aerodynamic configuration generated in the conceptual design phase is simple,quick and reasonable.