초록 ▼

A system for measuring propeller apparent slip includes a main console housing a processor. The system measures vessel speed with a pitot tube, pressure transducer, and the processor; and measures engine speed with an inductive pickup and the processor. The processor is pre-programmed with an algori

A system for measuring propeller apparent slip includes a main console housing a processor. The system measures vessel speed with a pitot tube, pressure transducer, and the processor; and measures engine speed with an inductive pickup and the processor. The processor is pre-programmed with an algorithm for determining apparent slip. When the engine gear ratio and propeller pitch are manually provided to the processor, the processor computes apparent slip on a substantially real-time basis. The processor routes information to a display screen in the main console, and also to a data logger for permanent data storage.

대표청구항 ▼

[ I claim:] [1.] In an arrangement for determining apparent propeller slip wherein a motor and propeller are operatively associated with a marine vessel, the marine vessel being moved through the water under the influence of the propeller, the combination ofa vessel speed measuring mechanism attache

[ I claim:] [1.] In an arrangement for determining apparent propeller slip wherein a motor and propeller are operatively associated with a marine vessel, the marine vessel being moved through the water under the influence of the propeller, the combination ofa vessel speed measuring mechanism attached to said vessel and including a sensor exposed to the water and converting the action of the water movement against said sensor into an electrical signal,a motor speed measuring mechanism operationally associated with said motor for determining the revolutions per minute of said motor when under power, said motor speed measuring mechanism generating an electrical signal corresponding to the revolutions per minute of said motor,a gauge in said vessel including a microprocessor and a visual display,operative connections between said sensor and said microprocessor and between said motor speed measuring mechanism and said microprocessor through which said electrical signals are transmitted to said microprocessor, andsaid microprocessor incorporating an algorithm for processing and converting said electrical signals to said visual display on said gauge corresponding to apparent propeller slip.