Urine-Based Power Generator for Ejection Seat Cushion Adjustment
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Solution Overview
Problem
Long-duration missions in aircraft and other vehicles pose challenges for seat comfort and urine disposal, with existing solutions being impractical or stigmatized, especially in ejection seats where power connections are impractical and conventional urine storage systems are inadequate.
Innovation Solution
Integration of a urine-based power generator into the seat, which includes a urine accumulation reservoir to generate electric energy and power an adjustable cushion, allowing modulation of its temperature, shape, position, and vibratory motion, independent of the vehicle's main power systems, and includes a fluid-flow device and energy storage for enhanced comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional electric power connections are used for adjustable seats, then seat comfort and adjustability are improved, but the seat cannot be used in ejection scenarios where power connections are impractical
Solution Approach 1:
The seat system generates its own power through urine-based fuel cells, eliminating dependence on external power connections. The metabolic waste collected from the occupant is converted into electrical energy to power the adjustable cushion and other seat functions, enabling the seat to operate independently in ejection scenarios while maintaining comfort features.
2Adaptability or versatility
If urine storage bags are used for long-duration missions, then urine disposal capability is provided, but the system is cumbersome and carries social stigma
Solution Approach 1:
The system converts urine, which is typically considered waste requiring disposal, into a valuable energy source. The urine is fed to fuel cells that generate electrical power, transforming a problematic waste stream into a resource that powers seat functions and extends mission duration without requiring traditional urine storage bags.
3Adaptability or versatility
If urine-based power generation is implemented, then power independence and comfort are improved, but the device complexity and integration requirements increase
Solution Approach 1:
The urine collection and processing system serves multiple functions simultaneously: it collects metabolic waste for disposal, generates electrical power through fuel cells, and provides water for other seat systems. This multi-functionality reduces the need for separate systems and manages the complexity through integrated design.
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 urine-based power generation system provides a self-sufficient means to enhance seat comfort by modulating the adjustable cushion's properties, addressing the need for comfort and urine disposal in ejection seats without relying on external power sources, while being compact and integrated within the seat.
Implementation Method 1
A urine-based power generator may be coupled to the seat... The urine-based power generator may include a urine accumulation reservoir configured to receive urine from the occupant, and the urine-based power generator may be configured to provide power to the adjustable cushion
Data Source
AI summary
A seat configured to support an occupant may include a urine-based power generator and an adjustable cushion. The urine-based power generator includes a urine accumulation reservoir configured to receive urine from the occupant, and the urine-based power generator is configured to provide power to the adjustable cushion. The seat may be an ejection seat, and the urine-based power generator and the adjustable cushion may be mounted to the seat such that the urine-based power generator and the adjustable cushion are configured to be ejected with the ejection seat.