초록 ▼

A power control system for driving a vessel (which may be manned or unmanned) is used to provide a series of pulse trains to the system wherein at least one pulse within each series of pulse trains provides a differing amount of power. Preferably, a portion of the series of pulse trains which has a

A power control system for driving a vessel (which may be manned or unmanned) is used to provide a series of pulse trains to the system wherein at least one pulse within each series of pulse trains provides a differing amount of power. Preferably, a portion of the series of pulse trains which has a duration of 10% of the duration of the pulse train delivers more than 20% of the total power to the drive member for the vessel which the drive member receives each cycle. In this way, the noise signature of a vessel is reduced or is varied to match the noise signature of another vessel or wildlife of a natural phenomenon.

대표청구항 ▼

1. A method of driving a vessel comprising the steps of:(a) providing power from a power source to a rotatably mounted fluid moving member which is mounted to the vessel; (b) producing changes in the rate of rotation of the fluid moving member whereby a series of differing accelerations are applied

1. A method of driving a vessel comprising the steps of:(a) providing power from a power source to a rotatably mounted fluid moving member which is mounted to the vessel; (b) producing changes in the rate of rotation of the fluid moving member whereby a series of differing accelerations are applied in a repeating pattern to cause rotation of the fluid moving member, said a series of the differing accelerations delivering power to the fluid moving member, wherein a portion of the series having a duration of 10% of the pattern delivers more than 20% of the power to the fluid moving member which the fluid moving member receives during the repetition of each series whereby the rotation of the fluid moving member imparts movement to the vessel and produces a noise signature.