Supercavitating vehicle control

a supercavitating vehicle and control system technology, applied in the direction of vessel movement reduction, vessel construction, foiling, etc., can solve the problems of intermittent banging of the tail surface, aft vehicle control system producing considerable parasitic drag, and vapor cavity may collapse about the trailing portions of the vehicle, etc., to achieve steady lift
US20100071605A1Inactive Publication Date: 2010-03-25UNITED STATES OF AMERICA NAVAL UNDERSEA WARFARE CENT DIV NEWPORT OFFICE OF COUNSEL THE
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Patent Information

Authority / Receiving Office
US ยท United States
Current Assignee / Owner
UNITED STATES OF AMERICA NAVAL UNDERSEA WARFARE CENT DIV NEWPORT OFFICE OF COUNSEL THE
Publication Date
2010-03-25
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A control system for a supercavitating vehicle includes a set of winglets for rapid maneuverability and a segmented ring wing for fine stabilization control. The winglets and ring wing extend from an aft portion of the vehicle. The winglets are supported by a strut attached to the vehicle. The angle of attack of each winglet into the water adjacent the cavity is controlled by a winglet actuator. The winglet assembly may be extended into the water or retracted to be completely within the cavity by means of a spring-loaded actuated mount. The segmented ring wing is controlled by a ring actuator. The ring actuator may be used to control the angle of attack of the ring wing. Alternately, or in combination, the flow over the ring wing may be neutralized by using the cavitator of the vehicle to globally enlarge the cavity and thus limit the flow.
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Description

STATEMENT OF GOVERNMENT INTEREST

[0001] The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.CROSS REFERENCE TO OTHER PATENT APPLICATIONS

[0002] Not applicable.BACKGROUND OF THE INVENTION

[0003] (1) Field of the Invention

[0004] The present invention relates to vehicle control systems and methods and more specifically to systems and methods for controlling a trajectory of a supercavitating vehicle.

[0005] (2) Description of the Prior Art

[0006] There exists a need for reducing drag in underwater vehicles, such as torpedoes, so as to enhance their speed, reliability and stealthy operation. For a nominally streamlined, fully wetted underwater vehicle, 80% of the overall drag is skin friction drag. The remaining drag is pressure or blockage drag.

[0007] Some investigations into reducing the drag of high-speed, underwater vehicles have focused attention on...

Claims

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