Rigidizable Insertion Tool With Rotary End Effector Access
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Solution Overview
Problem
Existing insertion tools for aircraft engines face limitations in accessing confined areas within the engine, necessitating disassembly and prolonged downtime for repairs and inspections.
Innovation Solution
A selectively rigidizable insertion tool with a rotary end effector that includes a flexible section with rigidizable links and a pneumatic turbine system, allowing for flexible insertion and rigid stabilization for repair operations, utilizing shaft couplings and multiple shafts to maintain rotary power and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid insertion tool is used, then structural stability and operational precision are improved, but the ability to access confined areas within the engine deteriorates
Solution Approach 1:
The insertion tool is divided into multiple rigidizable links connected by couplings, allowing the tool to be segmented into flexible sections that can navigate confined engine areas while maintaining structural integrity when rigidized
Solution Approach 2:
The tool transitions from a static rigid structure to a dynamic system that can selectively rigidize specific links, enabling it to adapt its flexibility and rigidity based on operational requirements for accessing different engine areas
2Adaptability or versatility
If a flexible insertion tool is used, then accessibility to confined areas is improved, but structural stability and operational precision deteriorate
Solution Approach 1:
The tool allows dynamic transition between flexible and rigid states, maintaining accessibility when flexible and providing structural stability when rigidized through the rigidization actuator
Solution Approach 2:
Different sections of the tool can be selectively rigidized based on local operational requirements, providing structural stability only where needed while maintaining flexibility in other sections for navigation
3Stability of the object's composition
If the flexible section is rigidized, then operational stability is improved, but the flexibility for navigation deteriorates
Solution Approach 1:
The rigidization actuator enables dynamic control of the flexible section, allowing it to transition between flexible navigation mode and rigid operational mode as needed
Solution Approach 2:
The flexible section is divided into multiple rigidizable links that can be selectively rigidized, providing operational stability at specific locations while maintaining flexibility in other segments for continued navigation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient on-wing repair and inspection of aircraft engines by providing a flexible path for insertion and stable operation, reducing downtime and maintenance costs through improved access and durability.
Implementation Method 1
an end effector actuator including at least one pneumatic turbine configured to transform fluid force of a fluid from the fluid path into torque to drive a rotation of the end effector
Implementation Method 2
a flexible section including a plurality of rigidizable links... configured to transfer torque from the end effector actuator to the end effector when in the tensioned state
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
An insertion tool is provided. The tool includes a flexible section (106) comprising a plurality of rigidizable links (102), an end effector actuator (604), and an end effector (108) coupled to the flexible section (106). A flexible is shaft (207) inserted through the flexible section (106), wherein torque is transferred from the end effector actuator (604) to the distal end (110) via the flexible shaft (207) to cause a rotation (502) of the end effector (108). A tool may include a tool-less disconnect interface (720) between the end effector (108) and the flexible shaft (207).