FINAL REPORT NONCIRCULAR ORIFICE HOLES AND ADVANCED FABRICATION TECHNIQUES FOR LIQUID ROCKET INJECTORS PHASE Ⅲ: ANALYTICAL AND COLD-FLOW EXPERIMENTAL EVALUATION OF RECTANGULAR CONCENTRIC TUBE INJECTOR ELEMENTS FOR GAS/LIQUID APPLICATION PHASE Ⅳ: ANALYTICAL AND EXPERIMENTAL EVALUATION OF NONCIRCULAR INJECTOR ELEMENTS FOR GAS/LIQUID AND LIQUID/LIQUID APPLICATION

摘要

This report contains the results (Phases III and IV) of a cold-flow and hot-fire experimental study of the mixing and 8tomization characteristics of injector elements incorporating noncircular orifices. Both liquid/liquid and gas/liquid element types are discussed. Unlike doublet and triplet elements (circular orifices only) were investigated for the liquid/liquid case while concentric tube elements were investigated for the gas/liquid case. It is concluded that noncircular shape can be employed to significant advantage in injector design for liquid rocket engines.