For the air-separation process of air-launch vehicle from the carrier aircraft,this paper gives out the unified model that is the rigid body-mass point model of the body-parachute system.

The simple planar motion model of the parachute-payload system was built when the hinge point was fixed or free,and then the model was applied for simulating a type of parachute-payload system.

Concerning that the characteristics change of moving parachute-mass system exerts an influence on the heavy items air-dropa,model of the heavy cargo air-drop system was established,the parachutes’ movement characteristics were analyzed,and the efficiency formula of the parachute-mass system was given.

These problems consist of calculation of parachute inflation performance, modeling of parachute-payload multi-body system, modeling of parachute suspension system, modeling of fluid-structure interaction for parachute inflation, computation of flow around bluff bodies, and analysis of wake re-contact phenomenon.

This paper discusses the position and gesture of the recovery motion for a small UAV,analyzes the dynamic relation between the aircraft and the parachute,and establishes a mathematical model of the aircraft-parachute system during the parachute landing program.

In order to find a suitable analysis method for the aerodynamic properties of parachute-bomb system,the external flow field of the terminal guidance submunition decelerated by the parachute system is simulated in this paper.