System for reducing drag and noise of underwater vehicles

Details System for reducing drag and noise of underwater vehicles System for reducing drag and noise of underwater vehicles

1971-02-17

1991-01-29

Lechert, Jr., Stephen J.

Ships

Torpedoes

114 67A, 114234, 252 62, F42G 1900

Patent

active

049878441

ABSTRACT:
A means and method for simultaneously reducing drag and noise of a high-sd underwater vehicle is provided. Water is admitted through a water intake scoop in the nose of the vehicle and a polymer powder-gas combination is injected into the water stream in the scoop. The water, polymer and gas are mixed in a mixing chamber into which the scoop empties and are ejected through a circumferential ejector disposed at the minimum pressure point.

REFERENCES:
patent: 3196823 (1965-07-01), Thurston
patent: 3230919 (1966-01-01), Crawford
patent: 3382831 (1968-05-01), Madison
patent: 3382832 (1968-05-01), Swanson
patent: 3392693 (1968-07-01), Hubsebos et al.
patent: 3435796 (1969-04-01), Merrill
patent: 4186679 (1980-02-01), Fabula et al.

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