Rotary machine and power system comprising the rotary machine

A power system comprising:

• a rotary machine, wherein the rotary machine comprises:
• a frame or housing;
• a rotary drum having a center shaft configured to be rotated relative to the frame or housing, the rotary drum including a body portion and at least one pair of gear positioning arms extended radially outwardly from the rotary drum;
• a stationary half gear arranged on the center shaft and including a non-geared portion of generally a circular contour and a geared portion having gear teeth, an outer diameter of the gear teeth raised from the non-geared portion;
• at least one pair of revolving gears, each pair composed of two revolving gears symmetrically positioned about the center shaft of the rotary drum and configured to simultaneously revolve around the stationary half gear, wherein the revolving gears are coupled to corresponding gear positioning arms, respectively,
• at least one pair of pinions coaxially coupled with the at least one pair of gear positioning arms, respectively;
• and
• at least one rack shaft operably coupled to the pinions to provide a relative movement between the rack shaft and the pinions,
• wherein as the revolving gears revolve around the stationary half gear, one of the two revolving gears is configured to have gear engagement with the geared portion of the stationary half gear, while the other revolving gear is configured to be idle to float over the non-geared portion of the stationary half gear;
• and
• wherein the power system further comprises:
• at least two blades, each blade coupled to each terminal end portion of the rack shafts.