Accession Number : ADD017710

Title :   Torque Balanced Postswirl Propulsor Unit and Method for Eliminating Torque on a Submerged Body.

Descriptive Note : Patent, Filed 30 Sep 94, patented 29 Aug 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Chen, Benjamin Y ; Tseng, Carol L ; Peterson, Frank B

Report Date : 29 Aug 1995

Pagination or Media Count : 15

Abstract : A torque balanced propulsor unit for a submersible vehicle of the type having a bow, a stern, a longitudinally extending central section axisymmetric about a longitudinal axis of the vehicle and including therein a maximum diameter of the vehicle, and a tapered aft section axisymmetric about the longitudinal axis is provided. The torque balanced propulsor unit includes a rotor for providing a forward thrust to the vehicle. The rotor includes a central axisymmetric hub and a plurality of circumferentially spaced apart impeller blades extending radially from the central hub. The rotor is rotationally mounted to the tapered aft section of the vehicle. The rotor has a first torque associated therewith. The torque balanced propulsor unit further includes a stator for producing a second torque on the vehicle. The Stator is secured to the vehicle at a location aft of the rotor. The stator includes a plurality of circumstantially spaced apart stationary vanes fixed to the vehicle and extending radially therefrom, the vanes being shaped to produce the second torque. The stator is configured and positioned so as to function within the waIte of the rotor to produce the second torque, wherein the second torque is substantially equal and opposite the first torque.

Descriptors :   *MARINE PROPELLERS, *TORQUE, *PATENTS, DIAMETERS, UNDERWATER VEHICLES, BLADES, PROPULSION SYSTEMS, LENGTH, AXES, AXISYMMETRIC, STATORS, TAPER, HUBS, ROTORS, THRUST, SUBMERSIBLES, PROPELLER BLADES, UNDERWATER OBJECTS, IMPELLERS

Subject Categories : Marine Engineering
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE