Heat exchange in combustion chamber at pulse mode operation

The heat exchange conditions on the interior surface of the combustion chamber of a control thrustear operating in a pulse mode are considered. For various segments of switching, evaluating in transient processes at starting and shut-down of the thruster, the possibility of using criteria dependencies circumscribing the heat exchange of a two-phase vapour-liquid medium and combustion product with chamber walls is investigated. The limits of applicability of these dependencies are shown at introduction of correction factors taking into account features of working process in the chamber. The outcomes of thermal calculation of the thruster operating a pulse mode are analysed. The influence of transients to a thermal condition of the combustion chamber is shown.