Patent ID: 6847903
Filing Date: 2005-01-25
Classification: B64D

Abstract:
1. An apparatus for determining liquid water content in a body of air, comprising a probe system comprising a probe configured to permit measuring a rate at which ice accretes on the probe from supercooled water in a body of air; a sensing circuit to sense a parameter that changes as ice accretes on the probe and to provide an output signal which is a function of ice accretion on the probe, means for providing signals indicative of air temperature and relative velocity of the body of air as air moves relative to the probe; a logic device communicatively connected to the probe system, configured to accept inputs from the sensing circuit, and inputs representing air temperature and relative velocity of the body of air from the means for providing, and a set of stored data providing an input to the logic device, the logic device performing operations on the inputs including determining the rate of change of ice accretion, and producing an output indicating liquid water content in the body of air using the set of stored data.