ACTIVE AIRCRAFT PROBE HEAT MONITOR AND METHOD OF USE

    公开(公告)号:EP3766782A1

    公开(公告)日:2021-01-20

    申请号:EP19213983.0

    申请日:2019-12-05

    Abstract: A method including providing power to an aircraft probe (102) anti-ice system, monitoring an actual power demand of the aircraft probe anti-ice system, monitoring an air data parameter and atmospheric conditions surrounding an aircraft (110) and calculating an expected power demand of the aircraft probe anti-ice system based on the air data parameters and the atmospheric conditions, comparing the actual power demand of the aircraft probe anti-ice system to the expected power demand, and performing a corrective action if the actual power demand and the expected power demand are different by more than an acceptable amount.

    TEMPERATURE-BASED SUPPRESSION OF SPURIOUS ICE SIGNALS

    公开(公告)号:EP4306421A1

    公开(公告)日:2024-01-17

    申请号:EP23185387.0

    申请日:2023-07-13

    Abstract: An ice protection system for an aircraft includes an ice detector (16) disposed in an external aircraft surface, a temperature sensor (126), and a controller (102). The ice detector includes an ice sensor (130). The controller includes an icing threshold module (118) which receives a temperature measurement from the temperature sensor, receives an ice accretion signal from the ice sensor, compares the temperature measurement to an icing threshold temperature, and determines whether the temperature measurement is above the icing threshold temperature. The controller suppresses an icing conditions alert if the temperature measurement exceeds the icing threshold temperature.

    SURFACE SENSING FOR DROPLET SIZE DIFFERENTIATION

    公开(公告)号:EP3564129A1

    公开(公告)日:2019-11-06

    申请号:EP19172127.3

    申请日:2019-05-01

    Abstract: Apparatus and associated methods relate to differentiating ice accretion caused by different supercooled water droplets on an airfoil (12) of an aircraft. A sensor (22) having a sensing surface region (42) is mounted at a mounting location of the airfoil (12) such that the sensing surface region (42) is flush with a surrounding adjacent surface of the airfoil (12). Water particles of sizes less than or equal to a predetermined threshold do not impinge the sensor surface region (42) at the mounting location when the aircraft is in flight. A sensor driver provides an excitation signal to the sensor (22). A signal detector (43) detects a sensor signal responsive to the provided excitation signal. The sensor signal is indicative of water particles exceeding the predetermined threshold impinging the sensing surface region (42). In some embodiments, the sensing surface region (42) is mechanically coupled to a resonant cavity (22C). In other embodiments, the sensor (22) is a surface resistance sensor configured to sense surface resistance.

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