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Preparation method of aircraft muffler plate

A sound-absorbing panel and aircraft technology, which is applied to mechanical equipment, gas turbine devices, machines/engines, etc., can solve the problem of insufficient sound-absorbing ability of the sound-absorbing plate, and achieve the effect of improving the sound-absorbing ability

Inactive Publication Date: 2019-05-24
瑞安市集泰航空配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that this area houses the engine fan which sucks in and shears the air creating a lot of noise and therefore requires sound dampening panels which do not have sufficient sound dampening capacity

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0013] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

[0014] A kind of preparation method of aircraft noise reduction panel is characterized in that: comprising the following steps:

[0015] Step 1: Add the modificator, magnesium powder, and aluminum powder in turn, set the speed at 300rad / min and continue stirring for 20 minutes to obtain a mixture;

[0016] Step 2: Increase the temperature of the heating furnace to 500-700°C, put the mixture into the heating furnace, add a foaming agent, rotate and stir for 7-9 minutes until completely mixed, take it out and cool at room temperature to obtain a prefabricated block.

[0017] Step 3: Cut the prefabri...

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PUM

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Abstract

The invention relates to a preparation method of an aircraft muffler plate. The preparation method improves the muffling capability. According to the technical scheme, the preparation method of the aircraft muffler plate is characterized by comprising the following steps that a modifier and magnesium powder are sequentially added into aluminum powder, stirring is continued at a rotating speed of 300 rad / min, and stirring is carried out for 20 minutes to obtain a mixture; the temperature of a heating furnace is increased to 500-700 DEG C, the mixture is placed into the heating furnace, a foaming agent is added, rotating and stirring are carried out for 7-9 min to complete mixing, the mixture is taken out and cooled at room temperature to obtain a prefabricated block, the prefabricated blockis cut and formed into a prefabricated plate, and the prefabricated plate is pressurized with an oil press of 20 to 1000 tons.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing panels for turbofan engines, in particular to a method for preparing an aircraft sound-absorbing panel. Background technique [0002] The problem of noise fatigue on engines is increasingly being recognized, with the majority of these noises being generated in the intake area of ​​the nacelle housing the engine. This is due to the fact that this area accommodates the engine fan which draws in and shears air creating a large amount of noise and therefore requires sound dampening panels which are not capable of sound dampening enough. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing an aircraft sound-absorbing panel to improve the sound-absorbing ability in view of the above-mentioned deficiencies in the prior art. [0004] To achieve the above object, the present invention provides the following technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/045B22F3/11B22F3/24B22F3/20
Inventor 黄品德
Owner 瑞安市集泰航空配件有限公司