Lobed Foam Aircraft Transparency Protector
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Solution Overview
Problem
Aircraft transparencies are prone to scratch and chip damage during transportation, storage, and installation due to dirt accumulation and physical contact, which is labor-intensive and costly to repair, and existing protectors like cotton fabric protectors are expensive and often ineffective.
Innovation Solution
Aircraft transparency protectors made from resilient, disposable foam material with lobed designs that conform closely to the transparency shape, using semi-rigid foam that is lightweight, absorbent, and inert, allowing for precise fitting and easy installation without reacting with the thin-film coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cotton fabric protectors are used to protect aircraft transparencies, then protection against scratches and impacts is provided, but the protectors become contaminated with dirt and may transfer dirt to the transparency, and they are expensive to produce
Solution Approach 1:
The patent employs disposable foam protectors that are used once and then discarded. This eliminates the problem of dirt transfer that occurs with reusable cotton fabric protectors, as each new protector starts clean. The foam material is inexpensive enough to justify single-use disposal, ensuring reliability without the harmful effect of dirt contamination from previous uses.
Solution Approach 2:
The patent changes the material parameter from cotton fabric to foam material. This material substitution provides the necessary protection while being less prone to dirt retention and transfer. The foam's cellular structure and surface properties differ fundamentally from cotton, reducing the harmful effect of dirt transfer while maintaining protective functionality.
2Reliability
If cotton fabric protectors are used to protect aircraft transparencies, then protection against scratches and impacts is provided, but the protectors are expensive to produce and must be re-used many times before disposal
Solution Approach 1:
The patent adopts disposable foam protectors that are inexpensive to manufacture. The foam material itself is low-cost, and the simple lobed design requires minimal processing. This eliminates the economic burden of reusing and maintaining cotton fabric protectors, making the protection system more economical while maintaining reliability through single-use freshness.
Solution Approach 2:
The patent changes the material parameter from expensive cotton fabric to inexpensive foam material. This material substitution dramatically reduces manufacturing costs while maintaining the protective function. The foam can be easily formed into the required lobed shape through simple molding or cutting processes, further reducing manufacturing complexity and cost.
3Reliability
If cotton fabric protectors are used to protect aircraft transparencies, then protection against scratches and impacts is provided, but the protectors fit the transparency poorly
Solution Approach 1:
The patent divides the protector into multiple lobes that can independently conform to the transparency surface. This segmented lobed structure allows each lobe to adapt to local surface variations, achieving better overall fit accuracy compared to a single-piece cotton fabric protector. The segmentation enables the protector to maintain close contact with the transparency while providing uniform protection.
Solution Approach 2:
The patent changes the material parameter from cotton fabric to foam material, which has different mechanical properties. The foam's elasticity and compressibility allow it to conform more accurately to the transparency shape. When the lobed foam protector is compressed during installation, it molds to the transparency surface, achieving superior fit accuracy compared to less compliant cotton fabric.
4Reliability
If protectors are used to protect aircraft transparencies, then protection against scratches and impacts is provided, but the protectors may react with or adversely affect the thin film coating on the transparency
Solution Approach 1:
The patent changes the material parameter from cotton fabric to foam material, which has different chemical properties. The foam material is inherently more chemically inert and less likely to react with or degrade the thin film coating on the transparency. This material substitution eliminates the harmful effect of coating reaction while maintaining protective effectiveness.
Solution Approach 2:
The use of disposable foam protectors ensures that fresh, uncontaminated material contacts the transparency coating each time. This eliminates cumulative chemical interactions that might occur with reusable protectors, preventing coating degradation while providing reliable protection during the installation process.
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
The foam protectors provide effective protection against scratches and impacts, reduce manufacturing costs, and can be used once before disposal, minimizing the risk of dirt transfer and improving installation efficiency, while being non-reactive with the transparency coating.
Implementation Method 1
The use of resilient material, such as semi-rigid, disposable foam, in the present invention makes the protectors far less expensive to manufacture
Implementation Method 2
the resilience of the resilient material is such that when the protector is installed on the aircraft transparency, the lobes are urged against the aircraft transparency
Data Source
Figure 1~2
Figure 3~6
AI summary
The invention relates to an aircraft transparency protector (10). The protector (10) comprises a lobed blank cut from a sheet of resilient material, which is bendable, such that adjacent lobes abut, thereby to conform to the shape of the transparency. A method of protecting an aircraft transparency is also provided.