Prediction of vortex interference on a canard controlled missile

The ability of a component buildup aerodynamic prediction program (Missile Datcom) to predict vortex interference effects is assessed. The simple vortex models used in the program are discussed. Comparisons are made with test data from a canard controlled missile. Good agreement is found at low angles of attack, even for cross-coupling effects (e.g. yaw due to roll command). At moderate angles of attack, even for cross-coupling effects (e.g. yaw due to roll command). At moderate angles of attack, deficiencies in the vortex model degrade the accuracy