Borescope Inspection Port Fitting for Gas Turbine Engine Maintenance
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Solution Overview
Problem
In gas turbine engines, the integration of borescope inspection ports is often hindered by external hardware such as gearboxes and conduits, which occupy desired locations and complicate maintenance accessibility.
Innovation Solution
A borescope inspection port fitting with a housing, tube boss, and flange is designed to accommodate an airflow tube and borescope plug, allowing for efficient sealing and maintenance access while optimizing external system packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If external hardware such as gearboxes and conduits are integrated into the engine case, then the engine structure becomes more compact and functional, but the available space for borescope inspection ports is reduced and maintenance accessibility is compromised
Solution Approach 1:
The inspection port fitting extends in a direction transverse to the borescope inspection port axis, utilizing unused spatial dimensions to accommodate external hardware while preserving port accessibility. This dimensional repositioning allows multiple functions to coexist without interfering with each other.
Solution Approach 2:
The inspection port fitting is designed as a separate, removable component that can be independently installed and removed from the engine case. This segmentation allows maintenance personnel to access the inspection port without removing entire external hardware components, improving accessibility while maintaining compact engine structure.
2Ease of operation
If borescope inspection ports are directly integrated into the engine case geometry, then maintenance accessibility is improved, but the engine case structure becomes more complex and external hardware integration is hindered
Solution Approach 1:
The inspection port fitting is designed as a separate, removable component that can be independently installed and removed from the engine case. This segmentation allows maintenance personnel to access the inspection port without removing entire external hardware components, improving accessibility while maintaining compact engine structure.
Solution Approach 2:
The inspection port fitting serves multiple functions: it provides access for borescope inspection, accommodates external hardware in transverse directions, and can be removed independently for maintenance. This multi-functionality reduces the need for complex integrated designs while maintaining versatility.
3Volume of moving object
If a single case port is used for multiple functions, then the engine structure becomes more compact, but the design complexity increases and functionality may be compromised
Solution Approach 1:
The inspection port fitting serves multiple functions: it provides access for borescope inspection, accommodates external hardware in transverse directions, and can be removed independently for maintenance. This multi-functionality reduces the need for complex integrated designs while maintaining versatility.
Solution Approach 2:
The inspection port fitting is designed as a separate, removable component that can be independently installed and removed from the engine case. This segmentation allows maintenance personnel to access the inspection port without removing entire external hardware components, improving accessibility while maintaining compact engine structure.
Data Source
AI summary
A borescope inspection (BSI) port fitting is provided for a gas turbine engine. The borescope inspection (BSI) port fitting includes a housing with a borescope inspection port.