A rocket engine control system comprising: a pressurized gas source; and divert thrusters downstream from the pressurized gas source and receiving flow from the gas source, for controlling thrust In different directions; wherein each of the thrusters Includes a control valve and an actuator coupled to the control valve for separately actuating the control valve; wherein each of the control valves includes: a fixed portion (32, 30') integrated to a pressure chamber and having fixed portion openings therein; and a movable portion (30, 31', 32') having movable portion openings therein; wherein the movable portion overlies the fixed portion; wherein the movable portion is rotatably mounted to the fixed portion; wherein the fixed portion openings and the movable portion openings combine to produce plural nozzles (24, 24') each having a convergent section, a divergent section, and a throat; wherein the fixed portion openings and the movable portion openings line up, allowing flow through both the fixed portion openings and the movable portion openings, when the movable portion is in an open position relative to the fixed portion; and wherein the fixed portion opening and the movable portion openings are offset from one another, preventing flow through the fixed portion openings and preventing flow through the movable portion openings, when the movable portion is in a closed position relative to the fixed portion. a pressurized gas source; and divert thrusters downstream from the pressurized gas source and receiving flow from the gas source, for controlling thrust In different directions; wherein each of the thrusters Includes a control valve and an actuator coupled to the control valve for separately actuating the control valve; wherein each of the control valves includes: a fixed portion (32, 30') integrated to a pressure chamber and having fixed portion openings therein; and a movable portion (30, 31', 32') having movable portion openings therein; wherein the movable portion overlies the fixed portion; wherein the movable portion is rotatably mounted to the fixed portion; wherein the fixed portion openings and the movable portion openings combine to produce plural nozzles (24, 24') each having a convergent section, a divergent section, and a throat; wherein the fixed portion openings and the movable portion openings line up, allowing flow through both the fixed portion openings and the movable portion openings, when the movable portion is in an open position relative to the fixed portion; and wherein the fixed portion opening and the movable portion openings are offset from one another, preventing flow through the fixed portion openings and preventing flow through the movable portion openings, when the movable portion is in a closed position relative to the fixed portion. a fixed portion (32, 30') integrated to a pressure chamber and having fixed portion openings therein; and a movable portion (30, 31', 32') having movable portion openings therein; wherein the movable portion overlies the fixed portion; wherein the movable portion is rotatably mounted to the fixed portion; wherein the fixed portion openings and the movable portion openings combine to produce plural nozzles (24, 24') each having a convergent section, a divergent section, and a throat; wherein the fixed portion openings and the movable portion openings line up, allowing flow through both the fixed portion openings and the movable portion openings, when the movable portion is in an open position relative to the fixed portion; and wherein the fixed portion opening and the movable portion openings are offset from one another, preventing flow through the fixed portion openings and preventing flow through the movable portion openings, when the movable portion is in a closed position relative to the fixed portion.