METHOD AND APPARATUS OF DETECTING LIQUID WATER IN A CLOUD

摘要

Apparatus and associated methods relate to determining liquid-waterconcentration in a cloud atmosphere based on a frequency of resonance of amagnetostrictiveresonator and/or a temporal variation of the resonant frequency of themagnetostrictive resonator.The magnetostrictive resonator is configured to resonate at a resonantfrequency indicative of ameasure of ice accumulation upon an exterior surface of the magnetostrictiveresonator. Whenin liquid-water ambient, however, the magnetostrictive resonator has aresonant frequency lessthan a baseline resonant frequency. When in the liquid-water ambient, themagnetostrictiveresonator also has temporal variations in resonant frequency that exceed onepart in ten thousand.Using one or both of these resonant-frequency responses to liquid-waterambient, a signalindicative of liquid-water content can be generated.