HU Guo-cai, XIANG Jin-wu, ZHANG Xiao-gu. On Influence of Kinematics to Equivalent Linear Damping of Helicopter Blade Hydraulic Damper[J]. Applied Mathematics and Mechanics, 2002, 23(8): 819-826.
Citation: HU Guo-cai, XIANG Jin-wu, ZHANG Xiao-gu. On Influence of Kinematics to Equivalent Linear Damping of Helicopter Blade Hydraulic Damper[J]. Applied Mathematics and Mechanics, 2002, 23(8): 819-826.

On Influence of Kinematics to Equivalent Linear Damping of Helicopter Blade Hydraulic Damper

  • Received Date: 2000-09-25
  • Rev Recd Date: 2002-03-26
  • Publish Date: 2002-08-15
  • An analytical model of hydraulic damper was presented in forward flight accounting for pitch/flap/lag kinematic coupling and its nonlinear force-velocity curve.The fourth order Runge-Kutta was applied to calculate the damper axial velocity in time domain.Fourier series based moving block analysis was applied to calculate equivalent linear damping in terms of transient responses of damper axial velocity.Results indicate that equivalent linear damping will be significantly reduced if pitch/flap/lag kinematic coupling introduced for notional model and flight conditions.
  • loading
  • [1]
    Twomey C B, Wereley N M. Review of engine/airframe/drive train dynamic interface development problem[R]. ADA057932,1978,111-124.
    [2]
    Niebanck C, Girvan W. Sikorsky S-76 analysis, design, and development for successful dynamic characteristics[A]. In:AHS Ed. The American Helicopter Society 34th Annual Forum Proceedings[C]. American: Washington DC,1978,78-23-1-17.
    [3]
    Tarzanin F J, Panda B. Development and application of nonlinear elastomeric and hydraulic lag models[R]. AIAA-95-1449,1995.
    [4]
    Wang J M, Challenges in rotor dynamics correlation[A]. In:AHS Ed. The American Helicopter Society 54th Annual Forum Proccedings[C]. America: Washington DC,1998.
    [5]
    Johnson W. 直升机理论[M]. 孙如林译. 北京:航空工业出版社,1991.
    [6]
    Bousman W G, Winkler D J. Application of the moving-block analysis[R]. AIAA-81-0653,1981.
    [7]
    Tasker F A, Chopra I. Assessment of transient analysis techniques for rotor stability testing[J]. Journal of the American Helicopter Society,1990,35(1):39-50.
    [8]
    Smith C B, Wereley N M. Damping identification in helicopter rotor system[A]. In:AHS Ed. The American Helicopter Society 54th Annual Forum[C]. America: Washington DC,1998.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1960) PDF downloads(539) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return