Aircraft Double Glazing Parallelism Control via Intermediary Pressure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Double glazings in aircraft cockpits experience differential deformation due to pressure differences between the outside and inside environments, leading to optical diffraction and reflection phenomena that hinder pilot visibility.
Innovation Solution
A device that measures the differential deformation between the outer and inner glazings and adjusts the pressure in the intermediary space using pressurization means, controlled by a logic based on stored parameters and deformation graphs, to maintain the parallelism of the glazings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the double glazing is designed with different thickness glazings to reduce sound nuisances, then sound insulation is improved, but differential deformation occurs under pressure difference causing optical diffraction and reflection phenomena that hinder visibility
Solution Approach 1:
The invention changes the pressure parameter in the intermediary space between the glazings to compensate for differential deformation. By adjusting the pressure in the intermediary space, the system maintains parallelism between glazings of different thicknesses, eliminating optical diffraction and reflection phenomena while preserving sound insulation benefits
Solution Approach 2:
The intermediary space acts as a mediator between the outer and inner glazings. By controlling the pressure in this intermediary space, the system balances the deformation of the two glazings with different thicknesses, preventing harmful optical effects while maintaining the structural integrity and sound insulation properties
2Strength
If the outer glazing is made thicker to resist pressure difference, then structural strength is improved, but differential deformation increases causing multiple optical diffraction and reflection phenomena
Solution Approach 1:
The invention adjusts the pressure parameter in the intermediary space to compensate for the increased deformation caused by the thicker outer glazing. This parameter change maintains parallelism between the glazings, eliminating optical diffraction and reflection phenomena while preserving the structural strength benefits of the thicker glazing
3Object-affected harmful factors
If pressurization means are added to maintain parallelism, then visibility is improved, but device complexity increases
Solution Approach 1:
The system uses the existing pressure differential between the inside and outside environments to maintain parallelism. By strategically utilizing the already-present pressure conditions and adjusting the intermediary space pressure accordingly, the system achieves visibility maintenance without requiring complex additional pressurization mechanisms
Solution Approach 2:
The invention makes minor adjustments to the pressure parameter in the intermediary space to maintain parallelism. These subtle parameter changes, rather than major pressurization efforts, suffice to eliminate optical diffraction and reflection phenomena, keeping the device relatively simple while improving visibility
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 solution ensures normal visibility by minimizing differential deformation between the glazings, allowing them to remain parallel despite pressure variations, and can be implemented on existing aircraft with minimal modifications.
Implementation Method 1
pressurization means capable of increasing or reducing the pressure in the intermediary space
Implementation Method 2
The deformation of the outer glazing naturally depends on the difference in pressure between the environment outside of the aircraft and the environment inside the cockpit
Data Source
AI summary
Device intended for a double glazing including at least one outer glazing and one inner glazing separated by an intermediary space filled with a gas, used to isolate an inside environment from an outside environment, a pressure variation being liable to occur between these environments, for example in the case of an aircraft in flight,includes means for conserving the outer glazing and the inner glazing of this double glazing mainly parallel, independently of this pressure variation.The invention also concerns a double glazing including this device, the process for maintaining parallelism and software using the process.