Modular Baffle Assembly for Duct Noise Attenuation and Maintenance
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Solution Overview
Problem
Conventional noise attenuation systems for turbine engines are inflexible, expensive, and difficult to maintain, with individually mounted baffles requiring extensive downtime and costly redesigns for noise compliance.
Innovation Solution
A noise attenuation baffle assembly with baffles arranged in a spaced relation, each coupled with first and second brackets that engage with a support structure within the duct, allowing for flexible assembly and easy maintenance, reducing the need for extensive duct redesigns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If baffles are individually connected to the inner surface of the duct, then noise attenuation is achieved, but the duct design becomes inflexible and expensive
Solution Approach 1:
Multiple individually mounted baffles are merged into a single integrated baffle assembly that can be installed as one unit. The assembly includes a framework with multiple baffle elements connected together, allowing the entire noise attenuation system to be installed and removed as a single module rather than individually mounting each baffle, thereby improving design flexibility and reducing installation complexity
2Object-affected harmful factors
If baffles are individually assembled into the duct, then noise attenuation is achieved, but the assembling and welding process becomes difficult and expensive
Solution Approach 1:
The baffle assembly integrates multiple baffle elements into a pre-assembled unit with a common framework, eliminating the need for difficult field welding and assembly operations. The entire assembly can be installed using simpler mechanical attachment methods, significantly reducing manufacturing and installation difficulty and cost
3Object-affected harmful factors
If baffles are assembled into the duct, then noise attenuation is achieved, but maintenance becomes difficult and results in extended downtime
Solution Approach 1:
By combining multiple baffles into a single removable assembly, maintenance personnel can access and replace the entire noise attenuation system as one unit. This modular approach allows for quick removal and replacement during maintenance periods, significantly reducing downtime compared to individually accessing and repairing each baffle within the duct
4Object-affected harmful factors
If conventional silencer design is used, then noise attenuation is achieved, but upgrading to comply with new noise requirements necessitates new duct or redesign
Solution Approach 1:
The duct system is segmented into a permanent duct structure and a removable, replaceable baffle assembly. This allows the noise attenuation component to be upgraded independently of the duct itself - new baffle assemblies can be manufactured and installed to meet evolving noise requirements without replacing the entire duct system, providing flexibility for future upgrades
Data Source
AI summary
A noise attenuation baffle assembly for a duct, is provided. The baffle assembly includes a number of baffles arranged in a spaced apart relation to one another. Each baffle includes a first side and a second side. The baffle assembly further includes a first bracket coupled to the first side of each baffle of the number of baffles. The baffle assembly further includes a second bracket coupled to the second side of each baffle of the number of baffles. The first and the second bracket are configured to be coupled to the duct.