Fluidic oscillating jet for high frequency gust tunnel

Details Fluidic oscillating jet for high frequency gust tunnel Fluidic oscillating jet for high frequency gust tunnel

1976-05-07

1978-02-21

Queisser, Richard C.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

23926523, G01M 900

Patent

active

040745686

ABSTRACT:
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 valves 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 valve 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 of phase. The rotary valves can be made with various configurations to provide various programmed disturbances in the wind tunnel.

REFERENCES:
patent: 3005339 (1961-10-01), Loftin, Jr.
patent: 3036430 (1962-05-01), Eggers et al.
patent: 3300978 (1967-01-01), Pennington
patent: 3749317 (1973-07-01), Osofsky
patent: 3819117 (1974-06-01), Moorhead, Jr.

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