Accession Number : ADD004765

Title :   Fluidic Oscillating Jet for High Frequency Gust Tunnel.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Viets,Hermann

Report Date : 21 Feb 1978

Pagination or Media Count : 7

Abstract : This patent discusses a fluidic jet control apparatus, for use in a gust tunnel test system, having a fluidic nozzle with elongated blocks positioned adjacent the nozzle exit port. A rotating control valve is positioned in each of the elongated blocks. The rotating control valve have elongated passages therethrough. Elongated attachment plates are positioned forward of the exit port on opposite sides of the exit port. The blocks have elongated slots therein for admitting ambient pressure to the stream adjacent the exit port when the passages in the rotary valves are aligned with the slots. The rotary valves passages are rotated by a chain drive and sprocket wheels, driven by an electric motor to open the passages on opposite sides of the exit port 180 degrees out ot phase. The rotary valves can be made with various configurations to provide various programmed disturbances in the wind tunnel.

Descriptors :   *Patents, Fluidic control, Control jets, Gust loads, Nozzles, Control jets

Subject Categories : Fluidics and Fluerics

Distribution Statement : APPROVED FOR PUBLIC RELEASE