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首页> 外文会议>28th European Rotorcraft Forum >FURTHER EXAMINATION OF THE VIBRATORY LOADS REDUCTION RESULTS FROM THE NASA/ARMY/MIT ACTIVE TWIST ROTOR TEST
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FURTHER EXAMINATION OF THE VIBRATORY LOADS REDUCTION RESULTS FROM THE NASA/ARMY/MIT ACTIVE TWIST ROTOR TEST

机译：美国国家航空航天局/陆军/麻省理工学院的主动扭力转子试验对振动载荷减小结果的进一步检验

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摘要

The vibration reduction capabilities of a model rotor system utilizing controlled, strain-induced blade twisting are examined. The model rotor blades, which utilize piezoelectric active fiber composite actuators, were tested in the NASA Langley Transonic Dynamics Tunnel using open-loop control to determine the effect of active-twist on rotor vibratory loads. The results of this testing have been encouraging, and have demonstrated that active-twist rotor designs offer the potential for significant load reductions in future helicopter rotor systems. Active twist control was found to use less than 1% of the power necessary to operate the rotor system and had a pronounced effect on both rotating- and fixed-system loads, offering reductions in individual harmonic loads of up to 100%. A review of the vibration reduction results obtained is presented, which includes a limited set of comparisons with results generated using the second-generation version of the Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics (CAMRAD II) rotorcraft comprehensive analysis.
机译：研究了利用受控的，由应变引起的叶片扭曲的模型转子系统的减振能力。使用压电活性纤维复合致动器的模型转子叶片在NASA Langley跨音速动力学隧道中使用开环控制进行了测试，以确定主动扭转对转子振动载荷的影响。该测试的结果令人鼓舞，并证明了主动扭力旋翼设计可为未来的直升机旋翼系统显着降低负荷提供潜力。发现主动扭转控制使用的功率不到运行转子系统所需功率的1％，并且对旋转和固定系统负载均具有显着影响，可将单个谐波负载降低多达100％。本文介绍了所获得的减振结果，其中包括与第二代旋翼飞机空气动力学综合分析模型（CAMRAD II）旋翼飞机综合分析所产生的结果进行的有限比较。

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