Northrop Grumman Systems Corporation

Huntington Ingalls, Inc.

David Albert Gooding

Douglas Lee Taylor

Sean Allen Coons

A linkage mechanism is disclosed that produces high travel advantage in one phase of linear actuator motion and high mechanical advantage in another phase of linear actuator motion. The linkage mechanism may be powered by a hydraulic actuator system and is capable of producing high preloads and a high amount of travel with minimal actuator motion or force. The linkage mechanism may be used to secure a hatch door to a pressure vessel housing or may be used in any environment involving high pressure differentials, for example.

Locking device

A pod propulsion system comprises a housing defining a fluid duct and an annular drum rotatably mounted to the housing within the fluid duct. The annular drum has a drum interior and a cylindrical outer surface. The system further comprises a rotor mounted to the drum for rotation therewith, the rotor and the drum having a common axis of rotation. A bearing assembly mounted to the housing comprises a first bearing comprising a first plurality of bearing pads disposed circumferentially around the drum. Each pad has a pad bearing surface adapted to contact a first drum portion in a predetermined manner and is pivotably mounted to the housing so as to maintain contact of the pad bearing surface with the first drum portion in the predetermined manner when an orientation of the drum portion relative to the housing changes.

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Newport News, VA, United States of America

David Albert Gooding