前行桨叶概念旋翼动力学分析方法

doi:10.7527/S1000-6893.2014.0075

Abstract

Abstract:

For advancing blade concept(ABC) rotors, the number of unknowns is more than the number of trimming equations. To obtain a reasonable solution, a trim analysis method based on optimization process is presented. Then a dynamic analysis method for ABC rotors is developed based on computational fluid dynamics(CFD)/computational structural dynamics(CSD) coupling technique. In CFD analysis, the governing equations, i.e., Euler/Navier-Stoke equations are solved and the overset grid and dynamic grid techniques are employed to simulate the blade motion and deformation; while the structure model of blades is established by moderate deflection beam theory. The XH-59A helicopter is taken as an example. The aerodynamic performances at different airspeeds have been investigated and the results fit well with the flight test data. The results demonstrate the accuracy and convergence of the presented method and also show its capability for potential application in ABC rotor dynamic analysis.

Key words: advancing blade concept, CFD/CSD coupling, rotor dynamics, aeroelasticity, helicopter

CLC Number:

V215.3

CHEN Quanlong, HAN Jinglong, YUN Haiwei. Analytical Method for Advancing Blade Concept Rotor Dynamics[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(9): 2451-2460.

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Analytical Method for Advancing Blade Concept Rotor Dynamics

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