Helicopter flight dynamics simulation model based on Simulink

A mathematical model for helicopter flight dynamics simulation was developed. In the process of modeling, the construction of the primary aerodynamic components of helicopter and the aerodynamic interference effects were considered comprehensively. Main rotor is the key part of helicopter modeling, and the associated modeling methods of aerofoil aerodynamic loads, rotor inflow dynamics and blade flap motion were discussed in detail. Based on the principle of hierarchy and modularity, the whole model was established in Simulink. Finally, the trim calculation and response analysis were carried out with the example helicopter's data. The simulation results validate the rationality and validity of modeling theories and methods.