Rear Mount Assembly Link Rod Adjustment Mechanism
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Solution Overview
Problem
Existing gas turbine engine mount systems face difficulties in adjusting the position of the adjustment mechanism after assembly, particularly due to the location of the adjustment mechanism making it challenging to adjust the rear mount assembly effectively.
Innovation Solution
The design incorporates a rear mount assembly with a plurality of link rods and connecting assemblies, featuring first and second locking members with abutment portions that allow for adjustable positioning of the link rods from outside the bypass duct wall, enabling secure locking and facilitating easier adjustment of the core portion within the bypass duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the adjustment mechanism is positioned inside the bypass duct wall, then the structural integrity is maintained, but the adjustability and ease of operation deteriorate
Solution Approach 1:
The locking members are designed to extend through the bypass duct wall from the interior to the exterior, creating a new spatial dimension for adjustment access. This allows the adjustment mechanism to be operated from outside the duct wall while maintaining structural integrity inside, effectively resolving the contradiction by adding a dimensional aspect to the design.
Solution Approach 2:
The locking members serve as intermediary elements that connect the interior adjustment mechanism with the exterior operating environment. These members transmit the adjustment force and position control from the exterior through the duct wall to the interior components, enabling easy operation without compromising structural integrity.
2Stability of the object's composition
If the locking members are positioned radially inwardly, then the structural stability is improved, but the accessibility for adjustment deteriorates
Solution Approach 1:
The locking members are designed to extend radially outwardly through the bypass duct wall, creating exterior access points for adjustment. This dimensional extension allows maintenance personnel to access and adjust the link rod positions from the exterior without disassembling the duct wall, resolving the accessibility issue while maintaining interior structural stability.
Solution Approach 2:
The locking members are pre-configured with exterior portions that protrude through the duct wall, preparing the structure for future adjustment and maintenance operations. This preliminary design feature ensures that accessibility is built into the structure before any adjustment or repair is needed, eliminating the need for complex disassembly procedures.
3Manufacturing precision
If the link rod position is fixed during assembly, then the manufacturing precision is improved, but the adaptability for post-assembly adjustment deteriorates
Solution Approach 1:
The system transitions from a static fixed-position design to a dynamic adjustable design. The locking members enable the link rods to be positioned and locked at various intervals along their length, allowing the system to adapt to different operational requirements while maintaining precise positioning once adjusted. This dynamic capability resolves the contradiction between fixed assembly precision and post-assembly adaptability.
Solution Approach 2:
The link rod assembly is segmented into adjustable sections with multiple possible positioning points. The locking members can be engaged at different locations along the link rod, creating discrete adjustment positions that maintain manufacturing precision at each position while providing overall system adaptability. This segmentation allows precise positioning without sacrificing adjustability.
Data Source
AI summary
A gas turbine engine with a rear mount assembly including link rods interconnecting the bypass duct wall and the core portion and connecting assemblies connected to the bypass duct wall. Each connecting assembly has inner and outer surfaces bordering an opening through which an outer end of a respective link rod extends. The outer surface is accessible from outside the bypass duct wall. A first locking member is engaged to the outer end in a first locked position, and includes an abutment portion located radially inwardly of the inner surface and abutting the inner surface, and an outer portion protruding radially outwardly through the opening beyond the outer surface. A second locking member is engaged the outer end in a second locked position, and has an abutment portion located radially outwardly of the outer surface and abutting the outer surface. A method of supporting a core portion is also discussed.