二元亚燃冲压发动机高空模拟扩压器气动设计

Aerodynamic Design on High Altitude Simulation Diffuser of Two-Dimensional Ramjet Engine

根据某型二元亚燃冲压发动机连管试验对高空舱内环境压力的要求,考虑高空台现有的抽气能力,充分利用冲压发动机排出燃气的能量,以提高模拟高度、节约能源、扩大高空台工作范围为目的,使用商业数值计算软件设计了一种高空模拟扩压器,并确定了最优的扩压器结构形式、结构参数和引射间距。

In this paper, an exhaust Omuser was designed by numerical calculation software according to the requirement of the two-dimensional ramjet experiments. The new diffuser could make the best of the gas energy, send up the simulative altitude, economize energy and enlarge the working range of altitude simulation test facility. Finally, the best diffuser structural form, structural parameter and the distances between the nozzle outlet and the diffuser inlet were determined.