Abstract: Taking into consideration the pitch and roll of a carrier aircraft landing platform, a sixdegree impacting model of an aircraft arresting hook is established and the bounce dynamic performance of the hook after touchdown is obtained. The impacting dynamic explanations of the hook with pitch and roll of the carrier are studied, and the bounce angle velocity and impulse of collision by the aircraft and deck affected by the pitch and roll angles of the carrier are explored. The displacement of the hook after impacting with the deck is studied. In order to engages the arresting cable, the buffering and damping performance of the hook longitudinal damper is also analyzed. The results show that the angle velocity and impulse of collision of a hook in the horizontal plane is nonzero, and the hook cannot engage the cable after impacting with the deck by gravitation. However, with the addition of a hook longitudinal damper, the hook bounce height and the time of the hook returning to the initial position for the first time can both satisfy the engagement conditions of the arresting hook.

Key words: rresting hook, impact, impulse of collision, pitch, roll, longitudinal damper