Self-cooled rotary engine and pump

A rotary combustion engine comprising:

• a cylindrical housing comprising a curved inner wall, a first end plate, and a second end plate;
• a plurality of internal cavities within the housing;
• wherein each of the internal cavities comprises a cylindrical segment of the housing;
• a plurality of stationary blades attached to the inner wall, the stationary blades dividing an inner volume of the housing in pie-shaped divisions around 360-degrees of the housing;
• the stationary blades connected to the inner wall of the housing and extending inward to ride along the surface of a central shaft, the stationary blades forming a plurality of sealed cavities;
• wherein the central shaft is centered along a longitudinal axis of the housing along a longitudinal line of rotation of the housing;
• the outside surface of the shaft is sealed, and the shaft extends to a gear box outside of the housing;
• wherein the stationary blades contact the shaft with a seal configured to prevent fluid leakage between each of the cavities, and wherein multiple cavities are formed in the housing such that each cavity is formed and bounded by the inner curved walls of the housing, the shaft, and at least one of the stationary blades;
• wherein each cavity contains a rotor blade attached to the shaft and configured to drive the shaft, wherein each rotor blade extends outwardly to an inner curve of the housing;
• and
• wherein each of the plurality of rotor blades has a reciprocating circular motion inside each cavity along the shaft, thereby generating rotational power, delivering compressed rotational force, and provides cooling for the cavity;
• and
• wherein the shaft extends to a gear plate outside the housing, the gear plate comprising a gear cutout for engaging a back-and-forth transfer apparatus comprising a roller that travels along the gear plate.