Volume 15, Issue 9 (11-2015)                   Modares Mechanical Engineering 2015, 15(9): 170-178 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mousavi S A, Elhami M R. Dynamic Analysis And Coupled Vibration Of Variable pitch Propeller. Modares Mechanical Engineering 2015; 15 (9) :170-178
URL: http://mme.modares.ac.ir/article-15-12191-en.html
Abstract:   (5115 Views)
Variable pitch propeller (VPP) are used in advanced helicopters, in order to achieve greater efficiency, better stability and achieve higher altitudes. This study is going to assess 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 were evaluated 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 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 effect on natural frequencies but in the case of rotation of propeller, affect on natural frequency of vibration modes as sine or cosine form.
Full-Text [PDF 537 kb]   (5767 Downloads)    
Article Type: Research Article | Subject: Vibration
Received: 2015/06/3 | Accepted: 2015/07/19 | Published: 2015/08/15

Add your comments about this article : Your username or Email:
CAPTCHA

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.