An aircraft comprising a body and a fluid-vectoring system coupled to the body and configured to control movement of the body as the body moves along a flight path during flight of the aircraft, the fluid-vectoring system including a first fluid passageway arranged to extend along an axis of the body and to define a first fluid cavity therein and a first fluid-control unit coupled to the body to move between a retracted configuration in which a first flow of environmental fluid moves downstream along the axis from an environment surrounding the aircraft, through the first fluid cavity, and to the environment and an engaged configuration in which the first fluid-control unit blocks the first flow of environmental fluid from flowing through the first fluid cavity, characterised in that the body includes a first bypass passageway defining a first bypass cavity, the first bypass passageway is arranged to communicate a first bypass flow of environmental fluid in the downstream direction from the environment surrounding the aircraft through the first bypass cavity into the first fluid passageway wherein the first fluid-control unit includes: a first control door, which is aft in the first fluid-control unit, coupled to the body to move between an opened position in which the first flow and the first bypass flow of environmental fluid are communicated through the first fluid cavity and a closed position in which the first control door extends into the first fluid cavity to block communication of the first flow and of the first bypass flow of environmental fluid through the first fluid cavity, a second control door, which is in the fore of the first fluid-control unit, coupled to the body to move between an opened position in which the first flow of environmental fluid is communicated into the first fluid cavity and a closed position in which the second control door extends into the first fluid cavity to block communication of the first flow of environmental fluid into the first fluid cavity, and a third control door, which is between the first control door and the second control door, coupled to the body to move between an opened position in which the first flow of environmental fluid is communicated past the first control door and into the first fluid cavity and a closed position in which the third control door forms an additional cavity in the first fluid cavity when the first control door in the closed position, wherein the first control door is movable relative to and independent of the second control door or the third control door. a first control door, which is aft in the first fluid-control unit, coupled to the body to move between an opened position in which the first flow and the first bypass flow of environmental fluid are communicated through the first fluid cavity and a closed position in which the first control door extends into the first fluid cavity to block communication of the first flow and of the first bypass flow of environmental fluid through the first fluid cavity, a second control door, which is in the fore of the first fluid-control unit, coupled to the body to move between an opened position in which the first flow of environmental fluid is communicated into the first fluid cavity and a closed position in which the second control door extends into the first fluid cavity to block communication of the first flow of environmental fluid into the first fluid cavity, and a third control door, which is between the first control door and the second control door, coupled to the body to move between an opened position in which the first flow of environmental fluid is communicated past the first control door and into the first fluid cavity and a closed position in which the third control door forms an additional cavity in the first fluid cavity when the first control door in the closed position, wherein the first control door is movable relative to and independent of the second control door or the third control door.