DYNAMIC ANALYSIS AND COUPLED VIBRATION OF VARIABLE PITCH PROPELLER

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MOUSAVI SEYED ALI; ELHAMI MOHAMMAD REZA

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:9 Page(s): 170-178

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Information Journal Paper

Title

DYNAMIC ANALYSIS AND COUPLED VIBRATION OF VARIABLE PITCH PROPELLER

Author(s)

MOUSAVI SEYED ALI | ELHAMI MOHAMMAD REZA | Issue Writer Certificate

Keywords

HELICOPTERQ1

PROPELLERQ2

VARIABLE PITCHQ2

GALLERKINQ2

COUPLED VIBRATIONQ2

Abstract

Variable pitch PROPELLER (VPP) is used in advanced HELICOPTERs in order to achieve greater efficiency, better stability and attain higher altitudes. This study assesses the behavior of VPP PROPELLER with coupled non-linear displacement in three degrees of freedom. Accordingly, the behavior of this type of PROPELLER with changes of elastic axis distance, length, mass, speed, polar radius of gyration, stiffness in three degrees of freedom, and pitch have been investigated. In this paper, GALLERKIN method is used to extract natural frequencies and the results compared with the results reported by other researchers. The results show convergence and accuracy of the used method. In this study, it was found that parameters of mass, length and rotational speed of the PROPELLER have an effect on the natural frequencies, and all modes of vibration. However, other parameters except for the pitch angle effect on the odd or even number of frequency modes. It was also found that the pitch angle in the static mode does not influence on natural frequencies, but in the case of rotation of PROPELLER, affects the natural frequency of vibration modes as sine or cosine form.

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APA: Copy

MOUSAVI, SEYED ALI, & ELHAMI, MOHAMMAD REZA. (2015). DYNAMIC ANALYSIS AND COUPLED VIBRATION OF VARIABLE PITCH PROPELLER. MODARES MECHANICAL ENGINEERING, 15(9), 170-178. SID. https://sid.ir/paper/179013/en

Vancouver: Copy

MOUSAVI SEYED ALI, ELHAMI MOHAMMAD REZA. DYNAMIC ANALYSIS AND COUPLED VIBRATION OF VARIABLE PITCH PROPELLER. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(9):170-178. Available from: https://sid.ir/paper/179013/en

IEEE: Copy

SEYED ALI MOUSAVI, and MOHAMMAD REZA ELHAMI, “DYNAMIC ANALYSIS AND COUPLED VIBRATION OF VARIABLE PITCH PROPELLER,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 9, pp. 170–178, 2015, [Online]. Available: https://sid.ir/paper/179013/en

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