Two different methods of JSL reconfiguration for reusable launch vehicle's reentry phase

We present two different methods of reaction control system (RCS) jet selection logic (JSL) reconfiguration; (1) assembled logic searching, (2) linear programming based on impulse moment control. In the full paper, we explain in some detail our two methods of JSL reconfiguration; in this abstract, we just add some pertinent remarks to listing the two topics of explanation. The first topic is: the method of JSL reconfiguration based on assembled logic searching. In the first topic, after explaining the principles of JSL reconfiguration, we give three specific steps of JSL reconfiguration. The second topic is: the linear programming method of JSL reconfiguration based on impulse moment control. In the second topic, we first explain the principles of linear programming method and then discuss its pros and cons as compared with the JSL reconfiguration method based on assembled logic searching. Finally, using the back RCS schematic of American X-34 technology demonstrator, we performed simulations, whose results are given in Figs. 2 through 9 in the full paper. These results show preliminarily that the two different methods proposed by us are both effective; when RCS jet fails to fire, although the control performance deteriorates quite considerably, such deterioration is still allowable.