G - Physics – 08 – B
Patent
G - Physics
08
B
340/139, 73/99
G08B 19/02 (2006.01) B64D 15/20 (2006.01) G01D 21/02 (2006.01) G01P 5/14 (2006.01)
Patent
CA 1049286
ABSTRACT OF THE DISCLOSURE Apparatus for indicating rate of ice accretion includes an endless test surface upon which ice forms in use. A gas flow passage terminates adjacent the surface in an aperture which is presented to and spaced by a known gap from the test surface. A flow of gas is generated in the passage towards the aperture and a drive arrangement drives the test surface past the aperture at a constant rate. An ice removal device is oper- able to remove ice from the test surface after the surface has moved past the aperture and there is provided a sensor which detects variations in the flow and/or pressure of the gas in the passage. These variations arise from the effect on gas flow of restriction of the gas by ice forming on the surface, and associated with the sensor is an instrument which provides an indication of the extent of the variation in flow and/or pres- sure and accordingly provides an indication of the rate at which ice is being accreted on the test surface.
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