Abstract: Embodiments relate to a rotary internal combustion engine with a sealing structure that enables a rotor and a plurality of wings within a housing to form a plurality of sealed chambers. The wings are connected to the rotor and can rotate about a first axis with reference to the rotor, and the rotor can rotate about a second axis with reference to the housing, the second axis parallel to the first axis. As the rotor rotates within the housing, the wings follow a predefined path, causing the sealed chambers to change in volume. In some embodiments, each sealed chamber undergoes the intake, compression, power, and exhaust cycles of a four stroke engine.