METHOD AND APPARATUS FOR REDUCING VIBRATION

摘要

Vibrations induced by a propeller (11) rotating in a medium to drive a body (10) supporting the propeller through the medium can be reduced by generating a timing signal (19) synchronised with the rotation of the propeller and using this timing signal to reduce the perturbations in propeller performance by varying the pitch of at least one blade (11a, 11b, 11c) of the propeller during each rotation of the latter, and/or by varying the pressure in at least one localised region of the medium through which the propeller turns. The success with perturbation reduction can be monitored by sensors (14, 15, 16) and the variations of pitch/pressure adapted (17) to optimise propeller performance.