Gas Generator Valve

The gas generator valve is a hydraulically oper­ated valve which controls and sequences entry of propellants into the gas generator. Hydraulic fuel is recirculated through a passage in the valve hous­ing to maintain seal integrity and to prevent the fuel in the fuel ball housing from freezing. Fuel is also recirculated through a passage in the piston between the opening port and the closing port to prevent the piston О-ring from freezing.

SATURN V NEWS REFERENCE

Gas Generator Assembly Including Control Valves

Gas Generator Injector

The gas generator injector directs fuel and oxi­dizer into the gas generator combustion chamber. It is a flat-faced, multi-orificed injector incorporat­ing a dome, a plate, a ring manifold, five oxidizer rings, five fuel rings, and a fuel disc. The gas gen­erator valve and the gas generator injector fuel inlet housing tee are mounted on the injector.

Fuel enters the injector through the gas generator fuel inlet housing tee from the gas generator valve. The fuel is directed through internal passages in the plate and injected into the combustion chamber through orifices in the fuel rings and the disc. Some of the orifices in the outer fuel ring also provide a cooling film of fuel for the combustion chamber wall. Oxidizer enters the injector through the oxi­dizer inlet manifold from the gas generator valve. The oxidizer is directed from the oxidizer manifold through internal passages in the plate and is in­jected into the combustion chamber through the orifices in the oxidizer rings.

Gas Generator Combustion Chamber

The gas generator combustion chamber provides a space for burning propellants and exhausts the gases from the burning propellants into the turbopump turbine manifold. It is a single-wall chamber located between the gas generator injector and the turbo­pump inlet.