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    • 3. 发明授权
    • Fluid energy converting method and apparatus
    • 流体能量转换方法和装置
    • US4184805A
    • 1980-01-22
    • US884816
    • 1978-03-09
    • Lee Arnold
    • Lee Arnold
    • F03D5/06
    • F03D5/06F05B2210/16F05B2240/124Y02E10/70
    • There is disclosed a method and apparatus for converting the kinetic energy of a moving fluid stream into useful work by means of a cascade of thin airfoils positioned therein. In one embodiment, the airfoils are provided with at least two degrees of freedom and adjacent airfoils are movable out of phase. The airfoils are subjected to the aerodynamically induced oscillations caused by the aeroelastic phenomenon known as flutter and the oscillatory movement is then harnessed to do useful work. In an alternate embodiment, a cascade of airfoils is mechanically oscillated within a moving fluid stream to increase the propulsion of the fluid. Where the fluid is a liquid, the cascade includes a plurality of hydrofoils.
    • 公开了一种用于通过位于其中的薄翼型级联将运动流体流的动能转换成有用功的方法和装置。 在一个实施例中,翼型件具有至少两个自由度,相邻的翼型件可以相位移动。 翼型受到由称为颤振的气动弹性现象引起的空气动力学诱发振荡,然后利用振荡运动来进行有用的工作。 在替代实施例中,叶片的级联机械地在移动的流体流中振荡以增加流体的推进。 在流体是液体的情况下,级联包括多个水翼。