Performance comparison between two different injector configurations in a hybrid rocket |
| |
| Institution: | 1. Science and Technology on Scramjet Laboratory, CARDC, Mianyang, Sichuan, 621000, China;2. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha, Hunan, 410073, China;1. Federal Science Center Scientific Research Institute for System Analysis of the Russian Academy of Sciences, 36-1 Nakhimovskiy pr, Moscow 117218, Russia;2. Moscow M.V. Lomonosov State University, Leninskie Gory 1, Moscow 119992, Russia;1. School of Astronautics, Beihang University, Beijing 100191, China;2. Research and Development Center, China Academy of Launch Vehicle Technology, Beijing 100076, China;1. School of Astronautics, Beihang University, Beijing, 100191, China;2. China Academy of Launch Vehicle Technology, Beijing, China;3. Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing, China;1. School of Astronautics, Beihang University, Beijing 100191, China;2. Key Laboratory of Spacecraft Design Optimization & Dynamic Simulation Technologies, Ministry of Education, China;3. Beijing Institute of Astronautical System Engineering, Beijing 100073, China |
| |
| Abstract: | Mass flux and pressure are usually considered the main parameters affecting the fuel regression rate in hybrid rockets, whereas the influence of the oxidiser injector is often neglected. Nevertheless, in some specific configurations, even in conventional hybrids, a noticeable dependence of regression rate on oxidiser injection modes has been found. Gaseous oxygen and polyethylene fuel cylindrical grains were burned. Results from the firing tests conducted with a conical axial injector of the oxidiser are discussed. That configuration provides highly stable combustion so it is considered very interesting and, hence, deserving of an in-depth analysis. A comparison to the results obtained with a radial injector is drawn in terms of average and instantaneous regression rate, fuel consumption profiles, and combustion efficiency and stability. The radial injector, at the same mass flux and pressure, produces lower regression rate, high pressure oscillations and worse combustion efficiency. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
