同轴直升机旋翼载荷传递原理

IF 1.4 4区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of the American Helicopter Society Pub Date : 2022-01-01 DOI:10.4050/jahs.68.012008

D. Han, G. Barakos

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引用次数: 0

摘要

从理论角度分析了同轴转子的载荷传递原理。在假定两转子载荷相等的前提下，通过对同轴转子系统各叶片根力和力矩的傅立叶级数求和，推导出轮毂力和力矩的理论表达式。分析关系表明，改变转子相位角可以减小(甚至消除)转子推力、阻力和俯仰力矩的特定谐波值，但减小的同时，转子侧力、滚动力矩和转矩的谐波值也会增加，反之亦然。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Loads Transfer Principles of Coaxial Helicopter Rotors

The load transfer principles of coaxial rotors are analyzed from a theoretical point of view. The theoretical expressions of hub forces and moments are derived by summing the Fourier series of the root forces and moments from all the blades of a coaxial rotor system with the assumption that the rotor loads are identical between the two rotors. The analytical relations indicate that changing the rotor-to-rotor phase angle may be used to reduce (and even eliminate) the magnitudes of specific harmonics of rotor thrust, drag, and pitching moment, but the reduction is accompanied by an increase in the magnitudes of rotor side force, rolling moment, and torque for the same harmonic and vice versa.

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来源期刊

Journal of the American Helicopter Society 工程技术-工程：宇航

CiteScore

4.10

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of the American Helicopter Society is a peer-reviewed technical journal published quarterly (January, April, July and October) by AHS — The Vertical Flight Society. It is the world''s only scientific journal dedicated to vertical flight technology and is available in print and online. The Journal publishes original technical papers dealing with theory and practice of vertical flight. The Journal seeks to foster the exchange of significant new ideas and information about helicopters and V/STOL aircraft. The scope of the Journal covers the full range of research, analysis, design, manufacturing, test, operations, and support. A constantly growing list of specialty areas is included within that scope. These range from the classical specialties like aerodynamic, dynamics and structures to more recent priorities such as acoustics, materials and signature reduction and to operational issues such as design criteria, safety and reliability. (Note: semi- and nontechnical articles of more general interest reporting current events or experiences should be sent to the VFS magazine