Ice formation condition detector

Abstract

The invention provides an ice formation condition detector, which comprises a sensing element, a temperature sensor and a controller, wherein the sensing element comprises a temperature sensing layer and a thermal insulation layer; a resistance wire is embedded into the temperature sensing layer; the thermal insulation layer is fixed on the inner surface of the temperature sensing layer; the temperature sensor is used for measuring real-time temperatures of the sensing element; the controller comprises a heating control module, a data storage module and a processor; the heating control module is used for heating the resistance wire by using constant electric power to ensure that the temperature of the sensing element is kept to be more than 0 DEG C; the data storage module is used for storing temperature target values of the sensing element under different flight conditions and acquiring real-time temperature values, which are measured by the temperature sensor, of the sensing element; and the processor is used for retrieving the temperature target values of the sensing element from the data storage module under a certain flight condition, comparing the temperature target values with the real-time temperature values and determining that an airplane runs into an ice formation condition if the real-time temperature values are less than the temperature target values.

Description

technical field [0001] The invention relates to the field of aircraft icing detection, in particular to an icing condition detector. Background technique [0002] Aircraft icing may lead to degradation of aircraft handling quality, loss of flight performance and reduction of flight safety margins. Icing detection technology can detect aircraft icing at an early stage so that corresponding actions can be taken in time, which is an improvement measure for flight safety. "SAE AIR4367A Aircraft Inflight Ice Detectors and Icing Rate Measuring Instruments" introduces the types of icing detection. There are two main methods: icing detectors to detect the icing state of the reference surface of the aircraft, or to detect whether the aircraft is in icing conditions Icing condition detector. [0003] Civil aircraft A340 / A380 / B747 / B777 / ERJ / CRJ are equipped with GOODRICH company's icing detectors. The probe is made of magnetostrictive material, and the vibration frequency of the prob...

AI Technical Summary

Problems solved by technology

The disadvantage is that the protruding probe destroys the aerodynamic shape of the icy-prone surfaces such as wings and engine intakes. It is generally installed on the nose of the aircraft to indirectly monitor the icing status of icy-prone surfaces such as wings and engine intakes.

The disadvantage is that the icing can only be detected after the icing mass reaches a certain level. At this time, ice of a certain quality may have accumulated on the icing surfaces such as the wing and the engine intake; moreover, the surface of the sensor is flat, and the wing and the Surfaces prone to icing, such as the engine intake duct, are curved surfaces, which cannot be completely fitted during installation

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