Complex sentence: The reaction control system involves a series of thrusters at key points in the aircraft's fuselage such as the wing tips and nose, thrust from the engine can be temporarily syphoned to control and correct the aircraft's pitch and roll during vertical flight.
Split into simpler sentences: The reaction control system involves a series of thrusters at key points in the aircraft's fuselage and nose, also the wingtips. Thrust from the engine can be temporarily syphoned to control and correct the aircraft's pitch and roll during vertical flight.