Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1975-07-07
1976-12-14
Woodiel, Donald O.
Measuring and testing
With fluid pressure
Dimension, shape, or size
73178R, 244134F, G01B 1304, G01C 2100
Patent
active
039967875
ABSTRACT:
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 operable 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 pressure and accordingly provides an indication of the rate at which ice is being accreted on the test surface.
REFERENCES:
patent: 2171450 (1939-08-01), Langley
patent: 2427778 (1947-09-01), Gregg
Lucas Industries Limited
Woodiel Donald O.
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