In order to develop oxidizer-rich preburner technology of full-flow staged combustion cycle engine(FFSC)

this paper planned the start-up experiment for an H2/O2 ox-rich preburner

and described their characteristics under test conditions.And

a fuel-rich ignition start-up mode was selected.The simulation study and test run of preburner show that

the calculated results match the test results

demonstrating that fuel-rich ignition for small flux ox-rich preburners is reliable and steady without any burning.This research and simulation lay a firm basis for future test and study of similar preburners.