Dynamics And In-orbit Survivability Of A Tape-shaped Electrodynamic Tether Satellite

Electrodynamic tether satellite system has attracted a lot of attention for its advantages of no fuel consumption,light weight and high efficiency.The system has been analyzed in many fields such as space exploration,satellite maneuvering and space debris cleaning.In particular,more and more attention has been paid to the merits of the tape-shaped tether satellite system,for it can save the limited space(like an electronic receiving device)and it has higher space survival rate.Therefore,it is necessary to study the tape-shaped tether satellite system deeply in its dynamic response,perturbation factors,survival rate and ground experiments.The research on these items will do a lot help to improve the reliability and stability of tethered satellite technology and lay a solid foundation for the practical application of space technology research results.This paper mainly studies the tape-shaped electrodynamic tether satellite system.The research content is as follows:1.Modelled the tape-shaped tether satellite system with multi-body system dynamics,taken into consideration the different constraint characteristics of various rigid body elements under different situations,and then obtained its dynamic equation;The dynamic response of the tether in the release stage of the tape-shaped tether satellite system simulated and analyzed under different bending stiffness was The influence of different sliding friction models between the tether and the releasing mechanism on the dynamic response of the system was studied.2.Through dynamic simulation,the dynamic response of tethered satellite system in state maintenance stage under different bending stiffness was studied,and the influence of atmospheric drag/lift force,electric force and other factors on the dynamic response was also been analyzed.3.The study compared two kinds of impact holes of which one considered the hole stress concentration and the other didn't,simulation under different orbital inclination had been done for both two kinds of holes to see how they would impact the survival rate of tape-shaped tether.Put forward a new kind of lashing structure to improve the strip tether space of survival and compared with ordinary ribbon tie space survival analysis.4.The microgravity environment in space was simulated by air flotation method,and the space dynamics equation was equivalent to the ground test platform.