OPERATING STABILITY OF TANK PRESSURIZATION REGULATION SYSTEMS.

The interaction of longitudinal housing vibrations with a closed fuel-tank pressurization regulation system of an elastic flying craft is considered. It is shown that losses of stability can occur under certain conditions in this closed loop. Analysis of the stability of such a system yields analytic relationships for the boundaries of the instability regions as a function of the parameters of the elastic housing, the properties of the pressurization gas, and the regulator adjustment parameters. The proposed method makes it possible to determine the regulator adjustment parameters such that the pressurization system will operate stably.