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Test method of helicopter air inlet channel anti-icing system

An anti-icing system and air intake technology, which is used in aerodynamic testing, mechanical component testing, machine/structural component testing, etc., can solve problems such as insufficient verification of the helicopter air intake anti-icing system, and achieve savings The effect of development time and test cost, many test sites, and short cycle

Pending Publication Date: 2022-03-01
CHINA HELICOPTER RES & DEV INST
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AI Technical Summary

Problems solved by technology

[0004] The invention provides a test method for the anti-icing system of the helicopter air intake, which alleviates the problem of insufficient verification of the existing helicopter air intake anti-icing system before finalization

Method used

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  • Test method of helicopter air inlet channel anti-icing system
  • Test method of helicopter air inlet channel anti-icing system
  • Test method of helicopter air inlet channel anti-icing system

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Embodiment Construction

[0034] The test method of the helicopter inlet anti-icing system provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Such as Figure 1-4 As shown, the present invention provides a kind of test method of helicopter air intake anti-icing system, comprises following 3 stages in chronological order:

[0036] 1) Normal temperature test

[0037] The air inlet is tested at normal temperature, and only the air inlet is tested to verify whether the distribution of hot air in the anti-icing chamber of the air inlet is reasonable, and whether the temperature characteristics can meet the anti-icing requirements. According to the test results, the air inlet carry out design iterations;

[0038] 2) Ice wind tunnel test

[0039] The icing environment required by the design is simulated in the ice wind tunnel, and the air intake and heating components are tested. The low-temperature air containing water droplets flows ...

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Abstract

The invention provides a test method of a helicopter air inlet channel anti-icing system. The helicopter air inlet channel anti-icing system comprises an air inlet channel and a heating assembly. The method comprises the steps that a normal temperature test is conducted on the helicopter air inlet channel anti-icing system, and when the temperature characteristic of an air inlet channel does not meet the anti-icing design requirement, iterative correction is conducted on the air inlet channel till the air inlet channel meets the anti-icing design requirement; an icing wind tunnel test is carried out on the helicopter air inlet channel anti-icing system, and when the heating performance of the heating assembly does not meet the design requirement, iterative correction is carried out on the heating assembly till the design requirement is met; and carrying out a spraying tower test on the helicopter air inlet channel anti-icing system, and verifying the anti-icing performance of the helicopter air inlet channel anti-icing system. Test items of different development stages are reasonably planned, the system performance can be fully verified, the repair workload after installation is reduced, and the development time and the test cost can be saved.

Description

technical field [0001] The invention belongs to the design field of the anti-icing system of the helicopter air intake, and relates to a test method of the anti-icing system of the air intake of the helicopter. Background technique [0002] The helicopter air inlet anti-icing system is used to heat the outer surface of the air inlet to ensure that the helicopter flies in an icy environment. Most of them use the hot air in the compression section of the engine as the heat source. The flow distribution is carried out under the action of structures such as cascades and cascades, and the outer surface of the air inlet is heated according to the anti-icing requirements. The air intake anti-icing system is divided into two parts: the air intake (including the anti-icing cavity) and the heating component (including the hot air pipeline, control device, valve, etc.). [0003] The helicopter air intake anti-icing system needs to be fully tested and verified before it is finalized. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M9/00B64F5/60
CPCG01M13/00G01M9/00B64F5/60
Inventor 陈甲朋周乐娥施瑾石兵枫汪智慧覃红夷
Owner CHINA HELICOPTER RES & DEV INST
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