Scheme design

numerical simulation and experimental study were used to investigate a fuel-rich preburner of full flow staged combustion cycle engine in order to validate the ignition reliability and products’ temperature uniformity.Gaseous hydrogen and gaseous oxygen were selected as the propellants.Three types of structure schemes

namely

shear tricoaxial injector

multi-injector

division combustion

were analyzed contrastively.The numerical results show that

the product temperature can reach a nicer uniformity in a short preburner length by using the scheme of shear tricoaxial injector.And

the credible ignition reliability and good product temperature uniformity were validated in the experimental test.The temperature uniformity can maintain well in a large range of mass flow.