초록 ▼

A system is disclosed that applies non-linear signal processing methods derived from theories of information and non-linear oscillations (chaos) to control the turbulent boundary layer of marine vessels in order to reduce the drag to which the vessels encountered while moving in water. The system us

A system is disclosed that applies non-linear signal processing methods derived from theories of information and non-linear oscillations (chaos) to control the turbulent boundary layer of marine vessels in order to reduce the drag to which the vessels encountered while moving in water. The system uses measurement probes mounted along the hull of a marine vessel to provide detection markers for increase or decrease in the drag based on a prescribed fluid (i.e., air) injection and flow rate in boundary layer. The invention utilizes a differential radius (DR) to determine the minimum entropy for a given flow rate in the boundary layer which defines the optimum condition used by the system for reducing drag.

대표청구항 ▼

1. A system for reducing drag to which a marine vessel may be subjected, said marine vessel being in contact with a boundary layer as it moves through a fluid, said system comprising:an air flow system coupled to said boundary layer; means for varying a bubble size interjected into said boundary lay

1. A system for reducing drag to which a marine vessel may be subjected, said marine vessel being in contact with a boundary layer as it moves through a fluid, said system comprising:an air flow system coupled to said boundary layer; means for varying a bubble size interjected into said boundary layer and the flow rate of said boundary layer, said means for varying the bubble size including a plurality of sensors each having an output and interposed in said boundary layer with said sensors detecting the flow rate of said boundary layer and pressure thereof and the size of bubbles flowing in said boundary layer; and a signal processor for receiving said outputs of said sensors and being responsive to application programs; said application programs determining the time rate of change of a chaotic radius (CR) which represents a differential radius (DR) having a range which controls said bubble size and said flow rate that is interjected in said boundary layer wherein said drag has a predetermined limit and said range of differential radius (DR) has a threshold value corresponding to said predetermined limit.