Novel anti-icing and deicing device for airfoils of airplane

Abstract

The invention discloses a novel anti-icing and deicing device for airfoils of an airplane. The device comprises skin, a program controller, an atmospheric temperature sensor and an icing strength annunciator, wherein ultrasonic deicing unit modules are fixedly arranged on the inner surface of the skin, and each ultrasonic deicing unit module comprises a plurality of piezoelectric ceramic transducers; each piezoelectric ceramic transducer is connected with an ultrasonic generator by a connecting cable; the ultrasonic generator is connected with a power supply; and the program controller controls the ultrasonic generator to start and stop according to temperature signals fed back by the atmospheric temperature sensor and controls the power of the ultrasonic generator and the number of the operating ultrasonic deicing unit modules according to ice layer thickness signals fed back by the icing strength annunciator. Therefore, by using the novel anti-icing and deicing device for the airfoils of the airplane, ice layers on the surfaces of the airfoils and the leading edge of an empennage can be effectively removed in real time during the flight of the airplane; the device is efficient, energy-saving, safe and reliable; ice can be thoroughly removed; and the flight safety of the airplane is ensured.

Description

technical field [0001] The invention relates to an anti-icing and de-icing device, in particular to an anti-icing and de-icing device for the leading edge of an aircraft airfoil (wing / tail), and belongs to the field of aircraft de-icing and anti-icing. Background technique [0002] Aircraft icing caused by icy and snowy weather is one of the main causes of aircraft flight accidents. According to statistics, about 9% of aircraft accidents are caused by icing. When the aircraft flies in icy conditions, the flight quality and flight performance will be greatly affected. Icing not only increases the weight of the aircraft and reduces the efficiency of the propellers, which in turn reduces the thrust available to the engines, but also interferes with airflow, causing increased drag and reduced lift. The icing on the wing, empennage and control surface will destroy the flow pattern on the wing surface, cause the stall speed to increase, and cause flight accidents. [0003] In or...

AI Technical Summary

Problems solved by technology

Icing not only increases the weight of the aircraft and reduces the efficiency of the propellers, which in turn reduces the thrust available to the engines, but also interferes with airflow, causing increased drag and reduced lift

The icing on the wing, empennage and control surface will destroy the flow pattern on the wing surface, leading to the increase of the stall speed, thus causing flight accidents

[0003] In order to reduce the impact of icing on the flight of the aircraft and increase the safety margin of the aircraft, the hot gas anti-icing technology is widely used for the anti-icing of the wings and tail of the aircraft. Although this anti-icing technology can prevent and deicing to a certain extent, it takes a long time to deicing and consumes a lot of energy. At the same time, due to its large thermal inertia, it is easy to form ice lumps behind the heating zone.

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