Blade Crawler for On-Aircraft Rotor Maintenance
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Solution Overview
Problem
Manual maintenance of airfoil-shaped aircraft components, such as rotorcraft blades, is costly, labor-intensive, and prone to human error, requiring frequent removal and reattachment, which reduces aircraft mission capability and increases the risk of accidents due to potential flaws.
Innovation Solution
An automated blade crawler apparatus that performs maintenance functions like nondestructive inspection, drilling, and painting on airfoil-shaped bodies without removing them from the aircraft, using a platform with interchangeable end effectors and adjustable stabilizing mechanisms to move along the blade, reducing labor and error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual maintenance is performed by removing blade components from the aircraft, then maintenance functions can be carried out, but maintenance time and labor costs increase significantly
Solution Approach 1:
A robotic maintenance system with a movable platform and end effector is introduced as an intermediary between the blade component and maintenance tools. The platform travels along the blade spanwise while the end effector performs maintenance operations, eliminating the need for component removal while providing automated precision maintenance capabilities
Solution Approach 2:
Manual mechanical maintenance operations are replaced with an automated robotic system. The robotic end effector, controlled by a computer system, performs drilling, countersinking, and fastening operations that were previously done manually, reducing both time and human error while maintaining accessibility to blade components
2Reliability
If manual maintenance is performed by skilled technicians, then maintenance quality can be maintained, but labor costs are significant due to technician scarcity
Solution Approach 1:
The robotic maintenance system operates autonomously with computer control, performing maintenance operations without requiring skilled human technicians. The system self-manages the complex repetitive tasks of blade maintenance, including positioning, drilling, countersinking, and fastening, thereby eliminating dependency on scarce skilled labor while maintaining high maintenance quality through automated precision
Solution Approach 2:
The robotic system incorporates sensors and computer control that provide real-time feedback during maintenance operations. This feedback mechanism ensures precise control of the end effector movements and operations, maintaining consistent high-quality maintenance results without requiring human skill intervention, thereby reducing labor costs while preserving reliability
3Ease of operation
If repetitive maintenance operations are performed manually, then maintenance functions can be completed, but human error increases the likelihood of flawed components
Solution Approach 1:
Manual repetitive maintenance operations are completely replaced with an automated robotic system. The robotic end effector performs all drilling, countersinking, and fastening operations with computer-controlled precision, eliminating human error entirely while maintaining ease of operation through automated program control. The system can be programmed to follow precise maintenance procedures without deviation
Solution Approach 2:
The robotic system uses sensors and computer control to continuously monitor and adjust operations in real-time. This feedback ensures that each maintenance operation is performed with precise control, preventing errors that could lead to flawed components. The system can detect and correct deviations from the intended maintenance procedure, ensuring high reliability
4Ease of manufacture
If blade components are frequently removed and reattached for maintenance, then maintenance can be performed, but aircraft mission capability is dramatically reduced
Solution Approach 1:
A robotic maintenance system with a movable platform is introduced as an intermediary that provides maintenance capabilities directly at the aircraft location. The platform travels along the blade and performs all necessary maintenance operations in place, eliminating the need to remove blade components from the aircraft, thereby maintaining full aircraft availability and mission capability throughout the maintenance process
Data Source
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AI summary
Automated apparatus (100) for performing maintenance functions on airfoil-shaped bodies (170) having short chord lengths, the apparatus (100) being movable in a spanwise direction along the airfoil-shaped body (170). In accordance with various embodiments, the apparatus (100) comprises a blade crawler capable of supporting any one of a plurality of end effectors (112) for performing a set of maintenance functions on an airfoil-shaped body (170), such as a blade component. Included in these functions are multiple options for nondestructive inspection, drilling, grinding, fastening, appliqué application, scarfing, ply mapping, depainting, cleaning, and painting devices that are attached as the end effector (112) for the blade crawler (100). As a whole, the blade crawler (100) reduces maintenance time, labor hours and human errors when robotic maintenance functions are performed on blade components.