| 发明名称 |
Acoustic driving of rotor |
| 摘要 |
Sound waves are utilized to apply torque to a body in an enclosure of square cross section, by driving two transducers located on perpendicular walls of an enclosure, at the same frequency but at a predetermined phase difference such as 90 DEG . The torque is a first order effect, so that large and controlled rotational speeds can be obtained.
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| 申请公布号 |
US4139806(A) |
申请公布日期 |
1979.02.13 |
| 申请号 |
US19770812447 |
申请日期 |
1977.07.05 |
| 申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR NATIONAL AERONAUTICS & SPACE ADMINISTRATION |
发明人 |
KANBER, HILDA;RUDNICK, ISADORE;WANG, TAYLOR G. |
| 分类号 |
G10K15/00;H02N11/00;(IPC1-7):H02N11/00 |
主分类号 |
G10K15/00 |
| 代理机构 |
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