Abstract: A fluidic device having a plenum chamber, an input port to the chamber for receiving a supply of gas, and a power nozzle contiguous with the plenum chamber for generating a power jet. Means is located upstream of the power nozzle for controlling the directional flow of the power jet exiting the power nozzle. The controlling means is comprised of an elongated movable element, so positioned within the plenum chamber to be surrounded by the gas therein, and means for adjusting the position of one end of the element relative to the axis of the power nozzle for controlling the directional flow of the power jet exiting the nozzle. The fluidic device forms part of a fluidic amplifier having at least first and second fluidic receivers positioned downstream from the power nozzle. The first receiver is axially aligned with the power nozzle for receiving the power jet when one end of the element is normally axially aligned with and located adjacent the power nozzle.