A fluid supply arrangement generating an anti-gravitational sight, comprising: - a fluid source, - at least one flow control unit comprising a fluid inlet connected to the fluid source by a medium conduit (5, 7, 10, 11, 13, 15, 17), - a fluid outlet connected to a fluid outlet of the fluid control unit through a medium conduit, - an illuminating unit comprising one or several light-emitting diode(s) intermittently illuminating the fluid flow exiting the fluid outlet, - an electrical control unit determining the frequency of intermittent light emitted by the illuminating unit, illuminating unit being connected to the output of the electrical control unit, characterised in that - the flow control unit is connected to the fluid source through one or several closing means (6, 8) influencing the flow of the fluid flow reaching the fluid outlet, - the flow control unit comprises an electromechanical flow-chopper unit adjustably influencing the flow of the fluid flow coming from the fluid source, - the electromechanical flow-chopper unit comprises a valve unit comprising a rotatably embedded valve body inserted in the flow path of the fluid flowing through it and opening and closing the flow path depending on its position, the arrangement also comprises respective sensors each detecting the status of the closing means (6, 8) influencing the flow of the fluid flow directly or indirectly, the outputs of which are connected to signal inputs (25a, 25b) of the electrical control unit, where the electrical control unit comprises a generator stage of controllable start-up for generating a variable low-frequency pulse sequence, and the illuminating unit and an electric motor forming a drive unit operating the rotatably embedded valve body are connected to outputs (25c, 25d) of the electrical control unit, and the electrical control unit comprises operating means determining the frequency of the pulse sequence produced by the generator stage. - a fluid source, - at least one flow control unit comprising a fluid inlet connected to the fluid source by a medium conduit (5, 7, 10, 11, 13, 15, 17), - a fluid outlet connected to a fluid outlet of the fluid control unit through a medium conduit, - an illuminating unit comprising one or several light-emitting diode(s) intermittently illuminating the fluid flow exiting the fluid outlet, - an electrical control unit determining the frequency of intermittent light emitted by the illuminating unit, illuminating unit being connected to the output of the electrical control unit, - the flow control unit is connected to the fluid source through one or several closing means (6, 8) influencing the flow of the fluid flow reaching the fluid outlet, - the flow control unit comprises an electromechanical flow-chopper unit adjustably influencing the flow of the fluid flow coming from the fluid source, - the electromechanical flow-chopper unit comprises a valve unit comprising a rotatably embedded valve body inserted in the flow path of the fluid flowing through it and opening and closing the flow path depending on its position, the arrangement also comprises respective sensors each detecting the status of the closing means (6, 8) influencing the flow of the fluid flow directly or indirectly, the outputs of which are connected to signal inputs (25a, 25b) of the electrical control unit, where the electrical control unit comprises a generator stage of controllable start-up for generating a variable low-frequency pulse sequence, and the illuminating unit and an electric motor forming a drive unit operating the rotatably embedded valve body are connected to outputs (25c, 25d) of the electrical control unit, and the electrical control unit comprises operating means determining the frequency of the pulse sequence produced by the generator stage.