Fluid Mechanics and Flight Mechanics

Analytical Method for Advancing Blade Concept Rotor Dynamics

  • CHEN Quanlong ,
  • HAN Jinglong ,
  • YUN Haiwei
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  • 1. Science and Technology on Rotorcraft Aeromechanics Laboratory, China Helicopter Research and Development Institute, Jingdezhen 333000, China;
    2. State Key Laboratory of Mechanics and Control for Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received date: 2013-11-22

  Revised date: 2014-04-24

  Online published: 2014-05-23

Supported by

National Natural Science Foundation of China (11102085); National High-tech Research and Development Program of China (2012AA112201)

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.

Cite this article

CHEN Quanlong , HAN Jinglong , YUN Haiwei . Analytical Method for Advancing Blade Concept Rotor Dynamics[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(9) : 2451 -2460 . DOI: 10.7527/S1000-6893.2014.0075

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