Volume 27 Issue 1
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SHAO Song, ZHU Qing-hua, ZHANG Cheng-lin, NI Xian-ping. Prediction of airfoil airload at low Mach numbers based on state space formulation[J]. Journal of Aerospace Power, 2012, 27(1): 137-144.
Citation: SHAO Song, ZHU Qing-hua, ZHANG Cheng-lin, NI Xian-ping. Prediction of airfoil airload at low Mach numbers based on state space formulation[J]. Journal of Aerospace Power, 2012, 27(1): 137-144.
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Prediction of airfoil airload at low Mach numbers based on state space formulation

  • Science and Technology on Rotorcraft Aeromechanics Laboratory, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2011-01-25
  • Rev Recd Date: 2011-11-03
  • Publish Date: 2012-01-28
    Abstract
  • The Leishman-Beddoes (L-B) unsteady and dynamic stall model is applicable to the medium Mach numbers(Ma>0.3),and some inconsistent problems for predicting airfoil airload when comparing with airfoil airload test data at low Mach numbers (Ma<0.3),so firstly the unsteady and dynamic stall aerodynamic behavior of airfoil at low Mach numbers was investigated,secondly the modified L-B model was set from the viewpoint of the variation of the flow on the airfoil surface,finally the comparisons between the modified L-B and airfoil airload test data at low Mach numbers show that the modified L-B model with state space formulation is accurate and can be used to predict the airfoil airload at low Mach numbers,and also it can be easily incorporated into a helicopter comprehensive code.

     

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    • References(14)
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