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Design method for improving acoustic performance of anti-icing panel of turbo-propeller plane

A technology of acoustic performance and design method, applied in the direction of fuselage bulkhead, fuselage insulation, etc., can solve problems such as attenuation of propeller noise transmission

Active Publication Date: 2015-03-25
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of anti-ice plate can not effectively attenuate the transmission of propeller noise to the cabin while preventing the propeller from throwing ice and damaging the fuselage structure, so it has certain limitations

Method used

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  • Design method for improving acoustic performance of anti-icing panel of turbo-propeller plane
  • Design method for improving acoustic performance of anti-icing panel of turbo-propeller plane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present invention provides a low aerodynamic sound, high sound insulation, easy to replace, high environmental adaptability anti-ice plate structure design method, including the following steps:

[0027] Step 1. Select the type of anti-icing panel according to the design scheme of the original aircraft anti-icing panel;

[0028] Step 2. Test the acoustic performance of the material to be selected according to the material sound absorption coefficient method and the sound insulation performance test method, and select the acoustic inner core of the anti-ice board according to the sound absorption coefficient and sound insulation performance of the material to be selected;

[0029] Step 3. Determine the thickness of the anti-icing plate according to the thickness of the acoustic inner core material and the thickness of the anti-icing panel, and use the aerodynamic calculation acoustic software to calculate the self-excited noise of the anti-icing plate based on the thi...

Embodiment 2

[0040] Similar to Example 1, comprising the following steps:

[0041] Step 1. Select the type of anti-icing panel according to the design scheme of the original aircraft anti-icing panel;

[0042] Step 2. Test the acoustic performance of the material to be selected according to the material sound absorption coefficient method and the sound insulation performance test method, and select the acoustic inner core of the anti-ice board according to the sound absorption coefficient and sound insulation performance of the material to be selected;

[0043]Step 3. Determine the thickness of the anti-icing plate according to the thickness of the acoustic inner core material and the thickness of the anti-icing panel, and use the aerodynamic calculation acoustic software to calculate the self-excited noise of the anti-icing plate based on the thickness of the anti-icing plate. On this basis, modify the aerodynamic The length of the edge banding, calculate the aerodynamic noise of the anti...

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Abstract

The invention provides a design method for improving the acoustic performance of an anti-icing panel of a turbo-propeller plane. The method comprises the following steps: selecting the model of the anti-icing panel, selecting the model of an acoustic inner core, designing the aerodynamic shape of the anti-icing panel, meeting the environmental suitability design requirement and the anti-icing panel installing requirement. According to the method, an anti-icing panel structure with the characteristics of high sound reduction index, low aerodynamic noise, easiness in replacement, capacity of meeting the environment suitability and the like can be designed, and the performance requirements in two aspects of preventing a propeller from throwing ice so as to damage the body of the plane and improving the acoustic performance of the body structure of the plane are met under the condition that the structure of the plane is not changed.

Description

technical field [0001] The invention belongs to the field of aircraft structural acoustic design, and in particular relates to a design method of an anti-ice plate. Background technique [0002] During the flight of a turboprop aircraft, the propeller rotates at high speed, which will generate huge line spectrum noise and airflow pulsation, hitting the skin of the fuselage, seriously affecting the acoustic environment in the aircraft cabin, and destroying the comfort of passengers. According to the existing research results, the propeller noise is mainly transmitted to the interior of the cabin through the fuselage side wall area corresponding to the plane of the propeller, which affects the comfort of passengers in the cabin. [0003] In the existing anti-ice plate design of domestic turboprop aircraft, a layer of skin is usually added symmetrically on the outside of the fuselage and in the area corresponding to the plane of the propeller to prevent the propeller from throw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/12B64C1/40
Inventor 侯峰黄文超董宁娟秦浩明潘凯庞彦宾李红丽刘兴强
Owner CHINA AIRPLANT STRENGTH RES INST
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