On the example of modeling thermodynamic processes occurring in the on-board gasification system (OGS) of unprocessed liquid fuel residues in the tanks of the launch vehicle stage (LV), using a reduced physical model of the fuel tank – an experimental model installation (EMI) as part of an experimental stand (ES), the design parameters of which are determined (geometric parameters, coolant and characteristics of the model fluid) based on the theory of similarity of thermophysical processes occurring in the real design of the fuel tank of the LV stage according to the criteria of Reynolds, Nusselt, Prandtl, methodological recommendations are proposed to improve the quality of the process of theoretical and experimental research at the stage of scientific research (R&D).
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