Abstract: Continuous rotating detonation engines including an annular combustion chamber formed between substantially concentric inner and outer cylindrical shells. A plurality of ignition devices extend into the annular combustion chamber and can be positioned around a circumference of at least one of the inner and outer cylindrical shells. Each ignition device is operative to provide ignition energy to the combustion chamber upon respective activation thereof. A plurality of injection openings extend radially through at least one of the inner and outer cylindrical shells for fluid communication with the annular combustion chamber.