Ships – Submersible device – Having propulsion unit
Patent
1994-09-30
1995-08-29
Avila, Stephen
Ships
Submersible device
Having propulsion unit
440 66, B63G 808
Patent
active
054451051
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 circumferentially 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 wake of the rotor to produce the second torque, wherein the second torque is substantially equal and opposite the first torque.
REFERENCES:
patent: 2727485 (1955-12-01), Combs
patent: 3678872 (1972-07-01), Migliaccio et al.
patent: 4798547 (1989-01-01), Gearhart
Chen, Benjamin Y.-H. and Carol L. Tseng "A Postswirl Propulsor For a Small ehicle." Propellers/Shafting '94 Symposium (Sep. 1994), pp. 1-1 to 1-7.
Chen, Benjamin Y.-H. "Postswirl Propulsors--A Design Method and An Application." Carderock Division Naval Surface Warfare Center Report CARDEEROCKDIV-92/011 (Sep. 1992).
Chen Benjamin Y.-H.
Peterson Frank B.
Tseng Carol L.
Avila Stephen
Borda Gary G.
The United States of America as represented by the Secretary of
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