METHOD OF STARTING ROCKET ENGINE CHAMBER WITH INJECTOR ASSEMBLY AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2002 - IPC

FIELD: methods of starting rocket engine combustion chambers. SUBSTANCE: proposed method consists in heating the nominal amount of gaseous component of propellant at injector assembly inlet by flame of burning components fed to injector assembly. These components are mixed in mass ratio between concentration limits of ignition and combustion. After temperature of mixture at injector assembly inlet becomes equal to or exceeds temperature of self-ignition of these components, second component is fed to injector assembly at rated flow. Device proposed for realization of this method includes preheater with ignition unit mounted in inlet diffuser. Distance between outlet section of preheater and inlet holes of injector assembly exceeds length of flame of burning components in preheater. EFFECT: enhanced reliability of ignition of propellant components in combustion chamber working on non-hypergolic propellant at low temperature close to surrounding temperature of gaseous component; enhanced stability of combustion at high-frequency fluctuations of pressure; completeness of combustion at steady-state operation. 3 cl, 2 dwg