Device for quick changeover between wind tunnel force and pressu

Details Device for quick changeover between wind tunnel force and pressu Device for quick changeover between wind tunnel force and pressu

1986-08-28

1987-08-25

Woodiel, Donald O.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

73756, 2851371, 285901, G01M 1900

Patent

active

046884220

ABSTRACT:
This invention is a device which allows for expeditious and repeated changeovers between pressure and force testing and which uses minimum internal volume of a wind tunnel test structure (24). A matrix configuration of holes (30) is located on the outer surface of the structure (24). Pressure tubes (27) lead through the internal cavity of the structure (24) from test sites (29) to this outer surface matrix configuration (30). A pressure tube connector (12) with a corresponding matrix of holes (17) is connected to the surface of the structure (24). Pressure tubes (11) leading from remotely located transducers (not shown) are joined to the connector (12), thus forming pressure passageways from the test sites (29) to the transducers (not shown) to allow for pressure testing. When force testing is required, the pressure tube connector (12) is disconnected and a cover plate (20) is connected. The cover plate (20) seals the exposed internal pressure tubes (27). Also, the outer surface (23) of the cover plate (20) conforms to the exterior of the structure (24), providing the necessary smooth surface for force testing. If further pressure testing is required, the cover plate (20) can be disconnected and the pressure tube connector (12) reconnected.

REFERENCES:
patent: 2523481 (1950-09-01), Rabenhorst
patent: 4111058 (1978-09-01), Gross
patent: 4653317 (1987-03-01), Schte
"A Construction Technique for Wind-Tunnel Models", NASA Tech. Briefs, Fall, 1980.

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