Design and Verification Test of Multiple-Injector Head Arranged in a Row for Combustion Stability Rating Test of a Liquid Rocket Engine

In this study, a multiple-injector head was designed and developed for the combustion stability rating test of a liquid rocket engine. Combustion instability is an important factor for determining the success or failure of a space vehicle launch mission, and it is important to rate the combustion stability of a liquid rocket engine during its development process. This study presents a preliminary investigation on the development of a subscale model combustor for rating the combustion stability of a full-scale combustor. The multiple-injector head, which is one of the key elements of the subscale model combustor, was designed/fabricated, and a combustion test was conducted to verify the performance of the manufactured head. The development of the multi-injector head was completed and discussed.