Abstract: An aircraft engine has opposite front and rear ends, extends in a longitudinal direction between the front and rear ends, and defines a longitudinal axis that extends between the front and rear ends. The aircraft engine includes a reference portion, and right and left cowls that extend arcuately at least partially around the longitudinal axis of the aircraft engine. The cowls are operative for covering at least a portion of the reference portion. Each cowl is movably mounted in relation to the reference portion so that the cowls move both radially away from the longitudinal axis and in the longitudinal direction as the cowls are moved from a closed configuration to an open configuration. Further, the cowls move both in the longitudinal direction and radially toward the longitudinal axis as the cowls are moved from the open configuration to the closed configuration.