Icing thickness detection method
A detection method, electrothermal deicing technology, applied to deicing devices, aircraft parts, transportation and packaging, etc., can solve problems such as difficult detection of thicker ice layers, false alarms, and weak ability to resist environmental interference
Active Publication Date: 2022-03-15
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Problems solved by technology
For example, the fiber-optic icing sensor has high sensitivity, but it is sensitive to water, oil, and dust, and there are false alarms. The ability to resist environmental interference is not strong, and the maximum ice thickness detected is usually less than 2mm. ice detection
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[0047] The following illustration provides many different embodiments, or examples, for implementing different features of the present invention. Arrangement of elements described below and the specific examples described, the present invention is only used streamlined expression, which by way of example only, and are not intended to limit the present invention.
[0048] The present invention employs a cell based deicing electrothermal ice detection means, disposed in said plurality of electrothermal deicing unit skin surface of the aircraft, said electrothermal deicing unit 10 comprises a base layer, the insulating layer 11, heating layer 15, an outer insulating layer 12, the wear layer 13, 14, a processor, and a first temperature sensor 17 and a temperature sensor or the second layer 16 to be tested; Please binding figure 1As shown, the base layer 10, the inner heat insulating layer 11, the heating layer 15, the outer insulating layer 12, the wear layer 13, and the pending layer...
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The invention is suitable for the technical field of aircraft anti-icing and deicing, and provides an icing thickness detection method, a plurality of electric heating deicing units are arranged on the skin surface of an aircraft, each electric heating deicing unit comprises a heating layer and a first temperature sensor or a second temperature sensor, the first temperature sensor is arranged above the heating layer, and the second temperature sensor is arranged above the heating layer. The second temperature sensor is arranged on an interface between the adjacent electric heating deicing units, and a gap is formed between the heating layers of the adjacent electric heating deicing units. According to the invention, reverse speculation can be carried out on the icing condition of the to-be-tested layer only by judging whether phase change steps appear in the temperature-time curves of the test points of the first temperature sensor and the second temperature sensor; on the premise of keeping the same heating power, the sensitivity of the intermittent heating mode to icing detection is superior to that of the continuous heating mode; the method is particularly suitable for aircraft use environments with high icing detection sensitivity.
Description
Technical field [0001] The present invention is in the field of aircraft ice protection, it relates to a method of detecting ice thickness. Background technique [0002] Electrothermal de-icing is one of the most commonly used aircraft de-icing methods, because of its clean energy, maintain good advantage, represent the development trend of the aircraft ice protection. Currently, the Boeing 787 airliner using electrothermal de-icing system to replace the hot anti-icing system, to achieve a de-icing system of all-electric technology. [0003] Aircraft Deicing is an aircraft wing, tail leading edge mounting a multilayered structure having an electrical deicing electrothermal heating element, the heating element converts electrical energy to heat energy, heat is transferred to the freezing surface by a multilayer structure, the ice adhesion interface melting ice with the help of aerodynamic or inertial force, to achieve the purpose of shedding ice. [0004] Ice protection in the con...
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Login to View More IPC IPC(8): B64D15/20B64D15/12
CPCB64D15/20B64D15/12
Inventor 肖春华马帅畅舒羽
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT