An aircraft propeller operates as the source of thrust that overcomes the drag force acting on the aircraft and can also partially overcome the aircraft weight, causing the aircraft to climb.
An aircraft propeller operates as the source of thrust. This source of thrust overcomes the drag force. This drag force is acting on the aircraft. This drag force is causing the aircraft to climb. This source of thrust can also partially overcome the aircraft weight. This source of thrust is causing the aircraft to climb.