# Dynamics Test Research of Bounce of Carrier-Based Aircraft Arresting Hook
## 1 Introduction  
The arresting hook is a significant difference between the carrier-based aircraft and the land-based aircraft. Its main function is to hook the arresting cable after the aircraft enters the landing area on the aircraft carrier smoothly, transfer the arresting force to the fuselage, and force the aircraft to decelerate [1]. Generally, the arresting hook firstly collides with the deck when the carrier aircraft lands, and the bounce in limited height occurs under the action of the arresting hook longitudinal damper [2]. When the arresting hook collides with the deck, both the arresting hook assembly and its connection are in the working environment of dynamic impact load, and the loading form becomes very complex, which makes the load analysis of the arresting hook very difficult. In order to study and test the bounce height and impact load when the arresting hook collides with the deck in the landing process, it is necessary to conduct a comprehensive assessment of the collision dynamic performance of the arresting hook in the laboratory environment through the collision rebound test of the arresting hook.  
The theoretical research on the collision dynamics of the arresting hook has been very mature. [PERSON] [3] has made a detailed study on the movement of the arresting hook after hitting the deck in the symmetry plane. Assuming that the carrier aircraft is centering arrested with no eccentricity, the differential equation of motion is established by analyzing the trigonometric relationship among the aircraft, the deck, and the arresting hook. A report published by the National Engineering Corporation [4] analyzes the collision of the arresting hook with the suspension support. On the basis of [PERSON]'s research, [PERSON] [5], [PERSON] [6, 7], [PERSON] [8], [PERSON] [9], and others have improved the collision dynamics model of the arresting hook, making the model more accurate. However, the assumptions of these theoretical models are too ideal, which cannot reflect the actual situation of the aircraft landing.  
In order to obtain more accurate data, it is necessary to simulate the real landing conditions and test the dynamic performance of the collision of the arresting hook through the test method.  
Due to the reasons of confidentiality, the relevant literature available is very limited, and there is no relevant report on the collision rebound test of the arresting hook. From the public research on the arresting hook, it is mostly about the actual measurement of the arresting load [10; 11] or the fatigue life of the arresting hook [12]. [PERSON] [13] carried out the actual measurement and research on the load of the arresting hook when the carrier aircraft stops landing on the ship; [PERSON] [14] designed a set of testing machine to simulate the interaction effect between the arresting hook and the deck coating when the carrier aircraft lands on the aircraft carrier, which is mainly used for testing the load in the process of impact. All of these researches focus on the load and do not test the dynamic characteristics of the collision such as bounce height and the bounce distance of the arresting hook.  
In this paper, the collision and rebound dynamics test of the arresting hook of a certain type of carrier aircraft is carried out, and the landing condition is accurately simulated in the laboratory environment, and the validity of the test method is verified. In the test, the bounce height, the bounce distance, and the stroke of the arresting hook damper are measured, which provides a feasible method for the rebound test of other types of arresting hooks, and provides reliable test data for the research of the rebound dynamics and the design of the arresting hook.