Fabrication of Small Flying Machines Using Magnetic Thin Films - Magnetics, IEEE Transactions on
نویسندگان
چکیده
A small flying machine based upon a new mechanism was realized. The flying machine driven by magnetic torque had hard magnetic rims as wings and a soft magnetic wire as a body, respectively. The wing has two hinges, which create different drag during up and down strokes, and produced lifting force. Shape magnetic anisotropy of the body stabilized the attitude, The flying machine flew without power supply cables and guides when the alternating magnetic field of more than 400 Oe around 12 Hz was applied. K. I. Arai, W. Sugawara, K. Ishiyama, T. Honda, and M. Yamaguchi Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-77, Japan force is dominant, drag is larger but lift is smaller compared with macro world. Therefore, flying micromachine should utilize the drag. According to fluid mechanics [6], an object obtains drag, D, in the uniform flow as follows,
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