Electromagnetically activated compliant wavy-wall

Details Electromagnetically activated compliant wavy-wall Electromagnetically activated compliant wavy-wall

1993-08-27

1994-10-25

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

H04K 300

Patent

active

053595742

ABSTRACT:
Electromagnets are disposed in an elastomeric coating affixed to a body esed to a fluid. Controllable magnetic forces created by the electromagnets produce a wavy-wall configuration in the surface of the coating which may be static, dynamic, or static in part and dynamic in part, and which interfaces with the fluid to controllably alter noise, turbulence and drag characteristics of the body mechanically. Electrodes may be fixed on the surface of the coating to produce electric force fields for interacting with the magnetic fields and the wavy-wall, to produce magnetohydrodynamically generated Lorentz forces which controllably further alter noise, turbulence and drag characteristics of the body.

REFERENCES:
patent: 4363991 (1982-12-01), Edelman
patent: 4516747 (1985-05-01), Lurz

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