Propulsion and directional control mechanism for an underwater d

Ammunition and explosives – Mines – Marine type

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Details

114338, 114 201, F42B 1901, F42B 1918

Patent

active

046483225

ABSTRACT:
A propulsion mechanism for an underwater device and, more particularly, a mobile mine having directional control provided by a pair of positionable fins each independently positionable by an associated fluid cylinder having a piston rod extending therefrom with a rack engaging with a pinion gear on a rotatable shaft supporting the fin. Control valve structure independently controls delivery of fluid under pressure to the two fluid cylinders for separate movement of the fins to produce the desired direction of travel. The propulsion mechanism utilizes a gas turbine which is supplied with hot gas under pressure from a gas propellant chamber which burns solid fuel and the gas turbine is located to enable substantially straight flow-through of gas from the gas propellant chamber through the turbine and through a tubular propeller shaft for exhaust aft of the mobile mine. The gas turbine has a turbine wheel with an axis of rotation offset from the axis of rotation of the propeller shaft and a speed-reduction gearbox is connected between the turbine wheel and the propeller shaft and with the bearing means for supporting the rotating components of the gas turbine, the speed-reduction gearbox and the propeller shaft being mounted to a common, rigid mounting structure in the form of a tail cone to assure accurate bearing alignment for the rotating components.

REFERENCES:
patent: 1044543 (1912-11-01), Leavitt
patent: 1349969 (1920-08-01), Leathers
patent: 2851982 (1958-09-01), Fogarty
patent: 2906227 (1959-09-01), Smith
patent: 3148508 (1964-09-01), Karig
patent: 3160026 (1964-12-01), Rosen
patent: 3608509 (1971-09-01), Brooks et al.
patent: 4274333 (1981-06-01), Lampton

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