Тechnique of rate making of medium mass of the working body of propulsion installation of the space vehicle in the conditions of uncertainty

The technique of rationing of weight of a working body of propulsion installation at the space vehicle designing, considering uncertainty on parameters and conditions having a probabilistic nature has been developed. It is suggested to use spacecraft mass reserves, intended for uncertainty counteracting, for propulsion device working medium mass increase after spacecraft manufacturing. Analytical models of additional filling probability calculation have been devised. The effectiveness of the suggested method has been evaluated.