Integrated Flexible Dynamic Maneuver Loads Models based on Aerodynamic Influence Coefficients of a 3D Panel Method

Kurzfassung

The integration of loads analysis models using so called aerodynamic influence coefficients (AICs) is described. These AICs relate a change of normal velocity at panel control points to a change in panel pressure distribution, allowing to consider aeroelastic effects in a straight forward manner. The aerodynamic method employed for aeroelastic applications is typically the Vortex or Doublet Lattice Method, discretizing mean lifting surfaces. In this paper, the AICs are obtained by a 3D panel method, which significantly increases the geometric fidelity and accounts for previously unmodeled effects. This paper demonstrates the application for manoeuvre loads analysis using a quasi-steady assumption. Two test cases are presented: a steady pull-up trim case and a transient roll manoeuvre. The results using the AIC approach are validated by comparison with steady computations of the 3D panel method.