Nutating fluid-mechanical energy converter

A system for generating a rotary output, the system comprising:

• a fluid-mechanical device comprising:
• an outer cylinder having a longitudinal passage there through;
• an inner guide cylinder disposed longitudinally within the outer cylinder, the inner guide cylinder and outer cylinder defining an annulus for flow of a fluid;
• a longitudinal guide positioned inside at least a portion of the outer cylinder, the longitudinal guide attached to a portion of an outer surface of the inner guide cylinder and extending outwardly toward an inner surface of the outer cylinder, wherein the longitudinal guide comprises a helical guide spanning at least a portion of a length of the inner guide cylinder;
• a rotor cylinder comprising a sidewall with a guide opening to receive the longitudinal guide, wherein the outer cylinder and the inner guide cylinder are concentric, and the rotor cylinder is eccentric relative to the outer cylinder and the inner guide cylinder;
• and
• a rotary output device connected to the fluid-mechanical device, the rotatory output device rotating in response to flow of the fluid through the annulus.

A method for generating a rotary output, the method comprising:

• positioning an inner guide cylinder in an outer cylinder having a longitudinal passage there through to define an annulus for flow of a fluid, wherein the inner guide cylinder and the outer cylinder are concentric, and wherein a longitudinal guide is positioned inside at least a portion of the outer cylinder, the longitudinal guide attached to a portion of an outer surface of the inner guide cylinder and extending outwardly toward an inner surface of the outer cylinder, wherein the longitudinal guide comprises a helical guide spanning at least a portion of a length of the inner guide cylinder;
• positioning a rotor cylinder in the annulus to be eccentric relative to the inner guide cylinder and the outer cylinder, the rotor cylinder comprising a guide opening positioned through at least a portion of a sidewall of the rotor cylinder, the guide opening to be received on the longitudinal guide;
• flowing a fluid through the annulus, wherein a torque is imparted on the rotor cylinder in response to the fluid flowing through the annulus, the torque causing the rotor cylinder to nutate in the annulus on the longitudinal guide;
• and
• connecting a rotary output device to the rotor cylinder, wherein the rotary output device rotates in response to receiving a nutation rotation of the rotor cylinder on the longitudinal guide.