Design of the hydraulic absorber for hydraulic catapult system

Hydraulic catapult is a high speed fluid power based launching system and the actuator is a 3-level telescopic cylinder. Limited by the traveling distance of the cylinder, There is no much room left for the cushion process, which leads to the impossible apply of the traditional hydraulic absorber. The structure of the cylinder also makes it impossible to design a cushion structure inside it. In this paper, a new shock absorber based on the flat plate throttled principle has been proposed, together with its mathematical model and the detailed theoretical analysis of its cushion process. The research shows that the relationship between the structure parameters and the load characteristics. Based on these results, a scheme has been designed for the cushion of very high speed hydraulic system in a short distance and time period.