Acoustic Propeller Based on Air Jets from Acoustic Streaming
Acoustic Propeller Based on Air Jets from Acoustic Streaming
复制标题
基于声流空气射流的声学螺旋桨
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
E. S. Kim
中科院分区：
文献类型：
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作者：
Yongkui Tang;E. S. Kim
本文描述了声学推进器和升降机，能够根据需要从合成空气射流产生推进力，所述合成空气射流由穿过覆盖声源（音频扬声器）的薄塑料（用激光加工成形）上的孔的声波产生。通过实验优化了喷孔排列方式，以产生较大的推力。通过改变驱动条件和工作频率，重603毫克的传感器可以旋转，或跳跃2.8毫米高，100毫米远，由空气射流推动。当作为声学提升器进行测试时，换能器能够提升299 mg的塑料件并旋转20.4 g的金属件。该装置也可以用声学信号而不是电力来驱动。
This paper describes acoustic thruster and lifter capable of generating propulsion force on-demand from synthetic air jets generated by acoustic waves passing through orifices on a thin plastic (shaped with laser-machining) covering a sound source (audio speaker). The orifice array pattern was optimized through experiments to produce large thrust force. By varying driving condition and operating frequency, the transducer that weighs 603 mg can rotate, or jump 2.8 mm high and 100 mm far, propelled by the air jets. When tested as an acoustic lifter, the transducer is capable of lifting a plastic piece of 299 mg and rotating a metal piece of 20.4 g. The device could also be driven with acoustic signal instead of electrical power.