Evaluation of Multistage Space and Missile Systems Using the Analysis of the Launch Mass Sensitivity to Design Changes

The paper continues the theme developed by the author of the application of sensitivity analysis of the initial mass of aircraft to design changes. In this case, we are talking about multistage space and missile systems. The equation of existence of a multistage flight vehicle is first proposed. At the initial design level, provided that the maximum launch mass remains unchanged, the tasks of assessing the impact of the first stage rescue method on the mass of the payload launched into low Earth orbit were solved. The research was carried out using the example of the Falcon-9, Falcon-Heavy and Super-Heavy–Starship space transport systems.