A propelling aircraft propeller anti-icing function verification test flight test method

A technology of aviation propellers and testing methods, which is applied in the testing of machine/structural components, measuring devices, measuring heat, etc., and can solve problems such as unpredictable actual temperature.

Active Publication Date: 2021-09-14
CHINESE FLIGHT TEST ESTAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the design institute has only made a rough estimate of the temperature of the blades by sticking temperature change test paper on the blades during the bench test, but the actual temperature during the flight is still unpredictable

Method used

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  • A propelling aircraft propeller anti-icing function verification test flight test method
  • A propelling aircraft propeller anti-icing function verification test flight test method
  • A propelling aircraft propeller anti-icing function verification test flight test method

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Embodiment

[0036] In the test flight of a certain type of propulsive aviation propeller aircraft, the method of this paper is used to test and verify the anti-icing function of the exhaust propeller of the aviation propeller. The specific implementation method is as follows:

[0037] (1) Propeller temperature measuring point selection and temperature sheet installation

[0038] The tested propeller is a three-bladed propeller, such as figure 2 As shown, three sections of the propeller prone to icing are selected, and two temperature measuring points are selected on the convex front edge of each blade, and each two measuring points are mutually backup.

[0039] (2) Data transmission and monitoring

[0040] Using radio telemetry technology, a wireless telemetry transmitting device is installed on the propeller disk, and a wireless telemetry receiving device is installed at the rear end of the engine to form a test system, which realizes short-distance wireless transmission and collection...

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Abstract

The invention belongs to the technical field of propeller flight testing, and in particular relates to a flight test method for propelling aviation propeller anti-icing function verification. The present invention is on the basis of mastering the temperature measurement of static parts, introduces radio short-distance telemetry technology to realize the temperature signal transmission of rotating parts, designs flight test task points according to the propeller flight use envelope, and measures the actual temperature of the blades in each flight state , to establish the temperature distribution law of propeller blades, and provide a basis for the verification of engine exhaust anti-icing function. The invention realizes the blade temperature measurement test of the propeller, obtains the actual temperature of the blade of the propeller under flight conditions, provides data support for the verification of the exhaust anti-icing function of the propulsion aviation propeller, and performs an anti-icing test on the exhaust air of the propeller propeller. Provide technical support for application promotion on the Internet; real-time data monitoring of the anti-icing working status of aviation propellers under flight conditions to ensure the safe test flight of propellers; solve the problem that the temperature of rotating parts is difficult to measure.

Description

Technical field: [0001] The patent of the invention belongs to the technical field of propeller flight test, and is specifically applied to the flight test of the exhaust anti-icing function verification test of propulsion aviation propeller. Background technique: [0002] Due to the low fuel consumption and high efficiency brought by propeller technology, aviation propellers have been well applied in transport aircraft, regional airliners and other fields, especially the promotion of pusher propellers in the field of military aircraft. At present, there are many models at home and abroad that use pusher propellers, which are installed at the rear end of the engine, and the engine exhaust is used to directly de-ice the propellers. This propeller anti-icing method has certain advantages compared with the traditional anti-icing guide ring anti-icing method. It cancels the influence of the resistance wires and appendages on the front edge of the propeller blades on the aerodyna...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00G01K7/18
CPCG01K7/18G01M99/008
Inventor 郭海东张永峰牛宏伟陶冶文敏
Owner CHINESE FLIGHT TEST ESTAB
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