Dynamic Features of Non-Return Mechanism in Hatch Door of Amphibious Aircraft

The non-return mechanism is the key device that plays role of braking in opening-and-closing electric actuator an amphibious aircraft hatch door. ball-and-socket contact pair, providing pressing force, and multi-disc friction supplying torque, are two core components mechanism. In this paper, dynamic model established considering freedom rotation-translation. Based on MATLAB/Simulink, solution framework overall built. response characteristics process reverse load braking, forward continuous closing analyzed. time angular displacement output shaft phase have been presented. Compared with has a longer smaller shaft. addition, compaction function pair verified by experiment, influence cone angle, distribution radius ball socket, steel diameter force discussed. This study provides theoretical basis parametric design platform for optimization mechanisms, which can shorten product development time.