UV-Curable Aircraft Graphics Application with Flexible Rail Positioning
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Solution Overview
Problem
Current methods for applying graphics on aircraft surfaces are slow, costly, and limited in complexity and accuracy, especially on contoured surfaces, leading to increased labor, surface drag, and maintenance issues due to the use of masking devices and the susceptibility of decals to UV degradation.
Innovation Solution
A flexible-rail positioning system integrated with a graphic image application system using ultraviolet curable inks and a camera-based fiducial detection system for precise alignment and application on large, contoured surfaces, eliminating the need for masking and allowing for complex, digitalized graphics on aircraft and other vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional painting methods are used to apply graphics on aircraft surfaces, then the graphics can be applied with basic equipment, but the process is slow and requires multiple masking steps that increase labor time and cost
Solution Approach 1:
The patent changes the chemical state of the paint from conventional air-drying to UV-curable formulation. This parameter change enables the paint to remain wet during application and positioning, then rapidly cure when exposed to UV light, eliminating the need for extended drying periods between coats and masking steps.
Solution Approach 2:
The patent applies all necessary graphics and design elements to the aircraft surface in a single wet application before the paint cures. The UV-curable paint remains workable during this preliminary positioning phase, allowing complex multi-color graphics to be applied and adjusted without premature hardening, then cures in one step to lock in the design.
2Manufacturing precision
If skilled personnel are used to manually paint or adhere graphics on aircraft surfaces, then the graphics can be applied with traditional methods, but the labor cost increases due to the complexity and skill required
Solution Approach 1:
The patent replaces manual mechanical positioning and painting operations with an automated computer-controlled system. The system uses digital templates, automated spray application, and computer-guided positioning to achieve precise graphics placement without requiring skilled manual painters, thereby reducing labor costs while maintaining or improving precision.
Solution Approach 2:
The patent uses digital copies and templates of the desired graphics design to guide the automated application process. Computer-stored design data is transferred directly to the aircraft surface through automated positioning and spraying, eliminating the need for skilled workers to manually interpret and execute complex design specifications.
3Adaptability or versatility
If photo-realistic images are applied to aircraft surfaces using traditional painting methods, then the graphics complexity can be increased, but the time required for multiple masking and repainting steps increases significantly
Solution Approach 1:
The patent changes the curing parameter of the paint from gradual air-drying to rapid UV-photochemical curing. This enables complex photo-realistic images with multiple colors and fine details to be applied in a single continuous process without the time-consuming sequential masking and repainting steps required by traditional methods.
Solution Approach 2:
The patent enables continuous application of complex graphics without interruption for drying or masking changes. The UV-curable paint remains in a workable wet state throughout the entire application process, allowing the automated system to continuously deposit multiple colors and design elements before a single curing step completes the entire graphics application.
4Manufacturing precision
If masking devices are used between successive paint applications, then the graphics can be precisely defined, but the time and labor required for applying and removing masking increases
Solution Approach 1:
The patent changes the paint formulation to UV-curable type, which fundamentally alters the timing and method of graphic definition. Instead of using physical masks to define boundaries during sequential painting, the system applies the complete graphic design in one continuous wet operation, then uses UV light to cure the entire area at once, eliminating masking entirely while maintaining precision through computer control.
5Manufacturing precision
If spray application devices are used to apply single color portions of the image, then the paint can be applied evenly, but the device must be cleaned several times before the image is complete, increasing time and labor
Solution Approach 1:
The patent changes from conventional air-drying paint to UV-curable paint, which remains in a stable wet state during the entire application process. This allows a single spray device to apply multiple colors and design elements without needing intermediate cleaning, as the UV-curable paint does not begin to dry or contaminate the nozzle until exposed to UV light after application is complete.
6Ease of manufacture
If conventional paint is used that requires successive applications with drying time, then the paint can be applied with standard equipment, but the production time for the aircraft increases
Solution Approach 1:
The patent changes the drying/curing parameter of the paint from slow evaporation-based drying to rapid UV-photochemical curing. This parameter change reduces the time required from hours of drying between coats to seconds of UV exposure, dramatically reducing aircraft production time while the equipment requirements remain comparable with standard spray application equipment.
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
This method significantly reduces labor costs and time, achieves high accuracy and durability, and allows for efficient application of graphics on 80% of aircraft surfaces, with faster curing and improved artistic flexibility, while minimizing surface drag and maintenance needs.
Implementation Method 1
using ultraviolet curable inks
Data Source
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AI summary
In an embodiment of the invention, there is provided an apparatus for application and accurate positioning of at least one graphic image on a large contoured surface, comprising a flexible-rail positioning system mounted on a portion of the surface on which the graphic image is to be applied, a graphic image application system, software to operate the positioning system, and software to operate the graphic image application system. In another embodiment of the invention, there is provided a method of applying and accurately positioning at least one graphic image on a large contoured surface.