Editing Thrust vectoring (section)

====Propellant injection====
Another method of thrust vectoring used on [[solid rocket propellant|solid propellant]] [[ballistic missile]]s is liquid injection, in which the [[rocket nozzle]] is fixed, however a fluid is introduced into the [[Exhaust gas#Jet engines and rocket engines|exhaust]] flow from injectors mounted around the aft end of the missile. If the liquid is injected on only one side of the missile, it modifies that side of the exhaust plume, resulting in different thrust on that side thus an asymmetric net force on the missile. This was the control system used on the [[LGM-30 Minuteman#Minuteman-II (LGM-30F)|Minuteman II]] and the early [[SLBM]]s of the [[United States Navy]].