G-Protective Trousers with Inflatable Compartments
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Solution Overview
Problem
Conventional G-suits are heavy, stiff, and uncomfortable, requiring tight fitting and overpressure breathing, which restricts natural G-tolerance and pilot well-being, and are not easily adaptable for various body sizes or quick donning.
Innovation Solution
Development of G-protective trousers with double-walled, air-permeable, tear-resistant synthetic textile compartments that can be inflated with compressed air to provide hemostatic pressure, allowing for adjustable and comfortable fit without the need for tight fitting or overpressure breathing, and designed for easy donning and doffing like regular trousers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional G-suits are used to provide G-protection, then G-protection is achieved, but weight increases and comfort deteriorates
Solution Approach 1:
The patent extracts the essential G-protection function from the conventional full-body G-suit and concentrates it into specialized protective trousers. By removing unnecessary components from a full suit while retaining the critical anti-G functionality through strategically placed inflatable compartments in the trouser legs, the solution achieves G-protection with significantly reduced weight and improved comfort.
2Reliability
If conventional G-suits are used to provide G-protection, then G-protection is achieved, but ease of operation deteriorates due to tight fitting requirements
Solution Approach 1:
The patent segments the G-protection system into independent inflatable compartments within the trouser legs rather than requiring a tight-fitting full suit. This segmentation allows the trousers to be donned like regular clothing without complex fastening systems, while the inflatable compartments provide the necessary G-protection when activated.
3Reliability
If conventional G-suits are used to provide G-protection, then G-protection is achieved, but comfort deteriorates due to stiffness and lack of breathability
Solution Approach 1:
The patent employs flexible, breathable textile materials for the trouser construction rather than rigid, non-breathable suit materials. The inflatable compartments are integrated into the fabric structure, allowing the trousers to maintain flexibility and breathability while providing G-protection through pneumatic pressure rather than rigid confinement.
4Reliability
If conventional G-suits are used to provide G-protection, then G-protection is achieved, but device complexity increases
Solution Approach 1:
The patent extracts and simplifies the G-protection system by removing complex full-suit infrastructure and retaining only the essential inflatable compartment system within the trousers. This reduction eliminates unnecessary components while maintaining the core anti-G functionality through a simpler, more manageable system.
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 G-protective trousers offer enhanced G-protection with improved comfort and reduced effort, providing up to 3.8 G more protection than conventional suits while being lightweight, breathable, and easy to wear, with faster pressure build-up and reduction, and can be worn over aviator suits and boots.
Implementation Method 1
These are both simply called hydrostatic G protective suits, although the liquid is by no means limited to water.
Implementation Method 2
the body regions and/or body parts to be protected are usually surrounded by the G protective suit or parts thereof. The body parts and regions, which are particularly stressed by the often extreme accelerations, are put under pressure within such G protective suits by compressed air or gas
Implementation Method 3
G-protective trousers consist entirely of an air-permeable, tear-resistant, fire-resistant and low-stretch synthetic textile
Implementation Method 4
enhanced G-protection with improved comfort and reduced effort, providing up to 3.8 G more protection than conventional suits while being lightweight, breathable
Data Source
AI summary
Acceleration protective trousers or G-protective trousers are double-walled forming airtight compartments. The trousers include an air-permeable, tear-resistant, fire-resistant and low-stretch synthetic textile material, and the trousers are provided with compartments which can be inflated into a circular cross-section. These compartments act as muscles by two opposite edges being pulled together and the adjacent pieces of textile material being stretched. These compartments extend along the trouser legs and are connected at the upper end of the trouser legs. The compartments on the outer sides of the trouser legs extend upwards from the groins and terminate in a bag-like bladder towards the lower abdomen. On the rear side of the trousers they communicate with one another via a connecting channel. A coccyx channel branches off downwards and extends towards the crotch. The compartments communicate via at least one hose with raccord with an automatically meterable compressed air supply.