In this study, to reduce oxidizer to fuel ratio (O/F) shifts, which are a serious problem for a hybrid rocket used for launching a satellite, an altering-intensity swirling-flow-type hybrid rocket was developed. It can alter the swirl intensity instantaneously during operation by controlling the ratio of the swirling oxidizer flow rate to the axial oxidizer flow rate using ball valves. Eight firing tests were conducted to obtain the relation among oxidizer mass flux, swirl intensity, and regression rate. Then the time scheduling of the valve open ratio was determined to eliminate O/F shift. Finally, a firing test was conducted using this system. From the results, the O/F shift was reduced from 2 to 1, i.e., halved.

在这项研究中，为减少氧化剂/燃料比（O / F）的变化，这对于用于发射卫星的混合动力火箭来说是一个严重的问题，因此，开发了一种变强度旋流型混合动力火箭。通过使用球阀控制旋流氧化剂流量与轴向氧化剂流量的比，可以在运行过程中即时改变旋涡强度。进行了八次燃烧测试以获得氧化剂质量通量，涡旋强度和回归率之间的关系。然后确定阀门开度比的时间安排以消除O / F偏移。最后，使用该系统进行了点火测试。根据结果​​，O / F偏移从2减少到1，即减半。