Abstract: This is a description of a single-stage engine having a cylindrical rotor with four curved blades attached by means of free rotating rods. The curved blades have extended, half-round knobs on opposite sides, aligned with the top surface that fit in the extended hemispherical grooves on the interior side-walls of the housing. The egg-shaped housing facilitates the compression and exhaust cycles. The two housing halves are joined together at the center. The three-stage engine comprises a compressor, which feeds air to a combustor for fuel injection, combustion and expansion of gases which rotate the rotor and generate torque. The afterburner receives the combusted gases from the combustor for secondary combustion and exhaust. Each unit consists of a cylindrical housing joined together on a common axis and a rotor mounted in an eccentric position of the housing sidewalls. The blades are similarly assembled as above.

Abstract: A three-stage internal combustion rotary engine, comprised of: a compressor feeding compressed air to a combustor for compression, fuel injection, combustion, and expansion of gases which rotate the rotor. The combustor rotor generates torque and drives the compressor and afterburner rotors simultaneously. The afterburner receives the combusted gases and scavenged air from the combustor for secondary combustion and expels the exhaust gases. Each unit consists of a housing joined together on a common axis and a rotor with a shaft mounted in an eccentric position of the housing side-walls. The shafts are interconnected by splines. The rotors have radial blind slots which contain slidable, movable vanes fitted with half-round knobs on opposite sides, aligned with the top surface and fit in the hemispherical grooves on the interior side-walls of the housing. This maintains a permanent contact with the interior housing periphery, regardless of gas pressures and rotating speed.