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A jet helicopter rotor anti/de-icing device

A helicopter rotor and jet-type technology, applied in de-icing devices, aircraft parts, transportation and packaging, etc., can solve the problems of less anti-icing/de-icing technology, achieve less pollution, prevent and eliminate ice accumulation, and improve utilization Effect

Active Publication Date: 2018-04-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing helicopter rotors mainly perform anti-icing / de-icing work by means of electric heating and hot air, and there are few relatively mature anti-icing / de-icing technologies

Method used

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  • A jet helicopter rotor anti/de-icing device
  • A jet helicopter rotor anti/de-icing device
  • A jet helicopter rotor anti/de-icing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the structure of the anti-icing / de-icing nozzle is an air-liquid two-way nozzle, the upper part of the nozzle is a hemispherical structure, and the lower part is a casing structure; the hemispherical structure can spray high-pressure engine exhaust gas mixed with carbon powder, and the casing structure has nozzles to spray the engine. For the deicing fluid heated by exhaust gas, in order to ensure the injection range, the cross-sectional size of the gas channel inside the hemispherical structure is designed to gradually decrease from the inside to the outside, thereby increasing the speed at the nozzle on the surface of the hemisphere and increasing the spraying range; anti-icing nozzle casing In the structure, the inner pipe and the outer pipe are equipped with external threads for connecting pipelines, which is convenient for connect...

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PUM

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Abstract

The invention relates to an icing-preventing and deicing device for a jetting type helicopter rotor. The device is mounted in an icing area of the helicopter rotor and comprises main components as follows: an iron clad, icing-preventing and deicing spray nozzles, a deicing fluid and carbon powder spraying gas-liquid control system and a hard base used for fixed mounting, wherein the deicing fluid and carbon powder spraying gas-liquid control system comprises a deicing fluid source, a check valve, a carbon powder box, an air compressor, a hydraulic pump, a heat exchanger used for heating the deicing fluid with heat of waste gas of an engine, a two-way connector used for connecting gas-liquid circuits, a hot air and deicing fluid conveying pipeline and a pressure meter used for measuring the gas-liquid circuits. Carbon powder is sprayed to be used as an icing condensation nucleus, so that subcooled water droplets can ice in advance; icing-preventing and deicing work can be performed on the helicopter rotor in a deicing fluid spraying and heating manner, and the device has the characteristics of short deicing time, low energy consumption, complete deicing and the like and can meet icing-preventing and deicing requirements in various poor meteorological environments and in different icing states.

Description

technical field [0001] The invention relates to a jet-type helicopter rotor anti-icing / deicing device, which belongs to the technical field of rotor anti-icing and deicing. Background technique [0002] When the rotor of a helicopter encounters a cloud layer containing supercooled water droplets at high altitude, icing will occur on the windward surface of the rotor. When the icing is severe, it may even cause a flight accident of the helicopter. Existing helicopter rotors mainly perform anti-icing / de-icing work by means of electric heating and hot air, and relatively mature anti-icing / de-icing technologies are few. Therefore, it is of great significance to study new fast and efficient anti-icing and de-icing technologies for helicopter rotors. [0003] Supercooled water droplets refer to water droplets whose temperature is below zero but still in a liquid state. Studies have found that the reason why supercooled water droplets do not freeze is mainly due to the lack of con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D15/12B64D15/10B64D15/00
CPCB64D15/00B64D15/10B64D15/12
Inventor 张以都陈龙吴琼周文兵高瀚君
Owner BEIHANG UNIV
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