Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-12-05
2000-01-11
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2503561, G01N 1506
Patent
active
060139218
ABSTRACT:
In a method of measuring a mass flow distribution of a flow over a measuring plane (8), a light section (5) extending parallel to and around the measuring plane is formed, the light section having a small thickness (7). A picture is recorded, vertically to the measuring plane and during a defined interval of time t, of particles carried by the flow and passing through the light section. The distribution of the images of the particles (4) in the picture is evaluated for the mass flow distribution.
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Butefisch Karl-Aloys
Kompenhans Jurgen
Moller Thorsten
Deutsches Zentrum fur Luft-und Raumfahrt e.V.
Luu Thanh X.
Westin Edward P.
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