Accession Number : ADD014699

Title :   Omnidirectional Variable Thrust Propeller.

Descriptive Note : Patent, Filed 28 Apr 86, patented 18 Sep 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Reich, Ronald S ; Uhrich, Richard W

Report Date : 18 Sep 1990

Pagination or Media Count : 6

Abstract : An omnidirectional variable thrust propeller for a vehicle includes a hub, a plurality of blades, and a plurality of shafts. Each shaft is coaxially rotatably connected to a respective blade and extends through the hub at an acute angle to a hub longitudinal axis. Each shaft has a lever arm and an inner end portion which terminates inside the hub. A reciprocably moveable device engages the inner end portions of the blade shafts to uniformly rotate the blades in one direction when the device moves longitudinally in one direction and uniformly rotate the blades in an opposite direction to enable a change of thrust. Another device pivotally supports the reciprocably movable device at a variable acute angle to the longitudinal axis. Another device selectivity move the reciprocably moveable device about the pivot point to nonuniformly change the rotation or pitch of the blade that alters the propeller's thrust direction. Patents. (JHD)

Descriptors :   *PATENTS, *PROPELLERS, *CONTROLLABLE PITCH PROPELLERS, ANGLES, AXES, BLADES, HUBS, LENGTH, MOBILE, OMNIDIRECTIONAL, PITCH(MOTION), PIVOTS, SHAFTS(MACHINE ELEMENTS), MULTIPLE OPERATION, THRUST, VARIABLES

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE