The Study Of Re-entry Module's Wiggle And Anti-rotation Control During The Landing Process

In this thesis the problems relative with safe reliability of manned spacecraft's recovery are commenced, the system's dynamic models of each moment during the landing process are developed, the influence of wind field to re-entry module's wiggle is studied, and the problem of re-entry module's anti-rotation control is discussed.The mass characteristic of parachute is studied. The flexible model of parachute-gallus, and the restricted model of cabin - parachute system are developed. By synthesizing and applying the knowledge of multi-body dynamics and aerodynamics, the dynamic models of each moment during the landing process are developed, and the dynamic equations are given.The system's attitude and speed of various wind field conditions during the landing process are calctflated, and the influence of wind to each parameter of re-entry module during the landing process and at the time of falling to ground is discussed. The conclusions could be valuable for recovery system's design.By simulating the system's performance in the condition of different anti-rotation control scheme and different start time or end time of anti-rotation control, the influence of anti-rotation control to system's performance is well discussed. The conclusions could be valuable for choosing a better anti-rotation scheme.