Cargo Lining Assembly with Ductless Aircraft Hold Ventilation
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Solution Overview
Problem
Conventional aircraft cargo hold ventilation systems require significant ducting, increasing fuel consumption and occupying valuable space, while maintaining underpressure and air quality.
Innovation Solution
A cargo lining assembly with independent ventilation and air recirculation systems, eliminating the need for longitudinal ducts by using ventilation inlets and outlets on transverse sidewalls and recirculation systems that circulate air through the cargo hold without external ducts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ventilation systems with multiple air inlets and outlets connected to longitudinal ducts are used, then air quality and underpressure in the cargo hold are maintained, but significant ducting is required which increases fuel consumption and occupies valuable space
Solution Approach 1:
The invention extracts and eliminates the longitudinal ducting system from the cargo hold configuration. By positioning ventilation inlets directly on transverse sidewalls and using the cargo hold structure itself as the ventilation pathway, the system removes the need for separate longitudinal supply and extraction ducts, thereby reducing weight and fuel consumption while maintaining ventilation functionality
Solution Approach 2:
The cargo hold structure serves multiple functions: it contains cargo and simultaneously acts as the ventilation pathway. The transverse sidewalls are integrated with ventilation inlets, eliminating the need for dedicated ventilation ducts. This multi-functionality reduces the overall system complexity and energy requirements
2Reliability
If conventional ventilation systems with multiple air inlets and outlets connected to longitudinal ducts are used, then air quality and underpressure in the cargo hold are maintained, but significant ducting is required which occupies valuable space in the aircraft
Solution Approach 1:
The invention extracts and eliminates the longitudinal ducting system from the cargo hold configuration. By positioning ventilation inlets directly on transverse sidewalls and using the cargo hold structure itself as the ventilation pathway, the system removes the need for separate longitudinal supply and extraction ducts, thereby reducing weight and fuel consumption while maintaining ventilation functionality
Solution Approach 2:
The ventilation system is merged with the cargo hold structure itself. The transverse sidewalls serve dual purposes as both structural boundaries and ventilation interfaces. This integration eliminates the need for separate ventilation ducts, optimizing space utilization within the aircraft
3Temperature
If trim air tapping with bleed air from aircraft engine is used for heating supply air, then temperature control in cargo hold is achieved, but significant ducting is required and fuel consumption increases
Solution Approach 1:
The invention extracts and eliminates the longitudinal ducting system from the cargo hold configuration. By positioning ventilation inlets directly on transverse sidewalls and using the cargo hold structure itself as the ventilation pathway, the system removes the need for separate longitudinal supply and extraction ducts, thereby reducing weight and fuel consumption while maintaining ventilation functionality
Solution Approach 2:
The system uses recirculation of air already present in the cargo hold for heating purposes, reducing the need for additional heated air from the engine. The air is recirculated through heating elements integrated into the cargo hold structure, making the system more energy-efficient by utilizing available resources rather than requiring continuous external energy input
Data Source
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AI summary
The present disclosure relates to a cargo lining assembly (100) for an aircraft (1), and an aircraft section and aircraft having the same. The cargo lining assembly has a ventilation inlet and outlet arranged at different sidewalls (115, 116) of the cargo lining assembly, and independent therefrom an air recirculation system (200).