转速优化旋翼的桨叶气动外形参数优化设计

doi:10.7527/S1000-6893.2014.0322

Abstract

Abstract:

An analytical model of rotor aerodynamics has been established in order to achieve the optimal aerodynamic shape parameters of optimum speed rotor; with the model, we computed induced velocity by free-wake theory and calculated rotor aerodynamics by blade element theory. Meanwhile, accuracy and efficiency of this model were guaranteed by using secondary trim method. With the above-mentioned model, we further analyzed the influence of different blade aerodynamic shape parameters on the rotor performance. Using genetic algorithm, aimed at hover efficiency and forward flight required power, we carried out the optimal design for aerodynamic shape parameters of optimum speed rotor and obtained the optimal solution. Then based on the optimal solution, we analyzed the influence of blade shape parameters on the rotor performance sensitivity by interval factor method. The sensitivity value demonstrated the optimality of the solution. Finally, having built the blade model and carried out the wind tunnel test, the results of the test show that optimal design for aerodynamic shape parameters can make hover and forward flight performance of rotor reach the theoretical calculation values, which verify the effectiveness of the optimal design for aerodynamic shape parameters of optimum speed rotor.

Key words: optimum speed rotor, free wake, aerodynamic shape, rotor, optimal design

CLC Number:

V211.52

XU Ming, LI Jianbo, HAN Dong. Optimal design for aerodynamic shape parameters of optimum speed rotor[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(7): 2133-2144.

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Optimal design for aerodynamic shape parameters of optimum speed rotor

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