In a high altitude airship propeller system, at present, adopting the technology of variable pitch increases the weight and consumes more energy, this paper designed a kind of centrifugal hammer pitch-controlled system based on the centrifugal force , analyzed the working principle of the mechanism, and Kinematics and dynamics simulation analysis are carried out using the ADAMS software. The simulation result shows that when the propeller speed was changed, this system can accomplish the functions of variable pitch propeller, and verify the feasibility of the mechanism. According to the simulation results, apply parametric modeling of centrifugal hammer, establish a constraint equation and make the pitch Angle of optimization as the objective function, optimize the space position of the centrifugal hammer, the optimization results show that 48 degrees of centrifugal hammer installation Angle has the best effect of variable pitch for this platforms.