Device for measuring pressures and variations of pressure with t

Details Device for measuring pressures and variations of pressure with t Device for measuring pressures and variations of pressure with t

1984-10-01

1986-06-03

Woodiel, Donald O.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

73724, 73727, 73756, G01M 900

Patent

active

045922292

ABSTRACT:
A device for measuring pressures and variations of pressure with time at surface of test objects, for example wind tunnel models, is equipped with a plurality of pressure-sensitive sensors (4) arranged on a carrier (3). The pressure-sensitive sensors (4) are seated flush with the surface in the carrier (3) and this, in turn, is arranged flush with the surface of the test object at the test location. In the carrier (3) an operational amplifier is provided for each sensor (4). The underside of each sensor (4) is connected via as short a line (10) as possible to the associated operational amplifier. At the carrier (3), connections (7, 11) for supplying the operational amplifiers (18) and for conducting the output signals are provided. All top sides of the sensors (4) are connected to each other and to a combined ground connection (5) of the operational amplifiers thru an electrically conductive coating.

REFERENCES:
patent: 2440198 (1948-04-01), Green
patent: 2509421 (1950-05-01), Carter
patent: 2551526 (1951-05-01), Campbell
patent: 2871698 (1959-02-01), Bagby
patent: 3178939 (1965-04-01), Rochester et al.
patent: 3398266 (1968-08-01), Willis
patent: 3460383 (1969-08-01), Padera

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