升力偏置转子的性能和载荷，第二部分:测量的预测验证

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-01-01 DOI:10.4050/jahs.67.012004

J. Schmaus, I. Chopra

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引用次数: 0

摘要

将升级后的UMARC综合分析预测结果与升力偏置转子实验结果进行了比较。实验范围为总俯仰角(θ°)为2°~ 10°，超前比(μ)为0.21 ~ 0.53，升力偏移为0% ~ 20%。实验模型转子来自一个同轴无铰转子系统，每个转子有两个叶片，第一次襟翼频率约为1.6/rev。仿真比较了孤立转子性能和控制升力偏移、载荷和俯仰连杆力。在实验中发现了随着升力偏置的增加而提高效率、升力偏置对不同载荷的影响以及节距连杆载荷对节距轴承阻尼的依赖关系，并与仿真相关联。

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Performance and Loads of a Lift Offset Rotor, Part II: Prediction Validations with Measurements

The predictions of an upgraded UMARC comprehensive analysis are compared to experimental lift offset rotor results. The experiments cover a range of collective pitch angles (θ°) from 2° to 10°, advance ratios (μ) from 0.21 to 0.53, and lift offset from 0% to 20%. The experimental model rotors are from a system of coaxial hingeless rotors, with two blades each, and a first flap frequency of approximately 1.6/rev. The simulation is compared with isolated rotor performance and controls with lift offset, loads, and pitch link forces. Increasing efficiency with increasing lift offset, the impact of lift offset on different loads, and the dependence of pitch link loads on pitch bearing damping are identified in the experiment and correlated with the simulation.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.