Abstract: Optimum maneuver control surface can ensure the safety flight cability of aircraft in low altitude penetration mode, and it is of great siginifcance to establish the valid and effective numerical simulation model. The numerical differential equations with muti-constraints is adopted for the first time, to construct the simulaton model for the aircraft with small wing load and mutifunctional and combined CS in low altitude manuever, the schemes of different maneuver CS considering the obstacle, the limit of angle of bank, the graident of climb are built. The simulation results show that the model is effective for solving the valid CS confiuration, which provides the theory evidence for manueve mode designing and important the design ideas to the CS system equipment.

Key words: optimum maneuver control surface configuration, small wing load, mutifunctional and combined CS, manuever mode