Mobile system weightlessness simulation for a large spacecraft

We study the problem of the possibility of creating a system of weightlessness simulation in ground conditions for large spacecraft. It is proposed to simplify and unify the system design of weightlessness simulation for mobile elements transformed mechanisms SC by the control unit on the basis of the computer and the microcontroller, appropriate software and the necessary number of modules weightlessness simulation. The proposed system simulate weightlessness, does not limit the area of installation and assembly work with the spacecraft, i. e. may be located in the shops equipped with an overhead crane or crane girders, not interfering with their work, that is, can be mounted in place on the walls, the ceiling and in the folded position does not occupy a working space over the spacecraft. The system simulating weightlessness allows weightlessness simulation structural elements having different speed and overcome the complex motion path during the expansion, so it is possible to constantly keep the whole object in general weightlessness state. In addition the system allows the simulation of weightlessness shoot weight characteristics (via the load cell) during ground tests - experimental specification parameters for physical development of mechanisms disclosure of antenna systems of the spacecraft. They are subsequently used to better simulate weightlessness when disclosing antenna systems of the spacecraft. The substantiation of the prospects of this system simulate weightlessness is given, its advantages in comparison with other systems simulate weightlessness is indicated.