| 应用FLOQUET理论分析直升机旋翼-机身耦合动不稳定性 |
| |
| 引用本文： | 程金送,凌爱民.应用FLOQUET理论分析直升机旋翼-机身耦合动不稳定性[J].飞行力学,1991(2). |
| |
| 作者姓名： | 程金送 凌爱民 |
| |
| 作者单位： | 中国直升机设计研究所，中国直升机设计研究所 |
| |
| 摘 要： | 本文详细论述了求解周期系数微分方程的Floquet理论及其在直升机旋翼-机身耦合动不稳定性分析中的应用,建立了一套实用的计算方法。这种计算方法,不仅可以分析旋翼特性各向同性的情况,还可以分析旋翼特性各向异性的情况,尤其对于旋翼特性各向异性情况下的旋翼-机身耦合动不稳定性的分析,该计算方法是目前最为有效和可靠的方法。本文给出了旋翼特性各向同性和各向异性情况下直升机旋翼-机身耦合动不稳定性算例计算结果,分析了一个减摆器失效和减摆器阻尼特性存在差异度情况下的耦合系统的动不稳定性,并得出明确的结论。
|
| 关 键 词： | 直升机 稳定性 耦合 模态 |
AN APPLICATION OF FLOQUET THEORY TO ANALYSE HELICOPTER ROTOR-FUSELAGE COUPLING DYNAMIC INSTABILITY |
| |
| Cheng Jinsong,Ling Aimin.AN APPLICATION OF FLOQUET THEORY TO ANALYSE HELICOPTER ROTOR-FUSELAGE COUPLING DYNAMIC INSTABILITY[J].Flight Dynamics,1991(2). |
| |
| Authors: | Cheng Jinsong Ling Aimin |
| |
| Institution: | Chinese Helicopter Research and Development Institute |
| |
| Abstract: | In the paper, Floquet theory to solve differential equations with period coefficient and its application of the theory to analysis of helicopter rotor-fuselage coupling dynamic instability have been introduced and a set of practical methods developed, which can be used in analysis of rotor-fuselage coupling dynamic instability in the case of isotropic and nonisotropic rotor, especialy in that of nonisotropic rotor, which is the most effective and credible in present.
The calculation results of some examples of rotor-fuselage coupling dynamic instability for isotropic and nonisotropic rotor also are given in the paper. The dynamic instability of a coupling system with one blade damper inoperative and different dampers in damping property have been analysed, and therefore the clear conclusions obtained. |
| |
| Keywords: | helicopter stability coupling mode |
| 本文献已被 CNKI 等数据库收录！ |
|
