Aircraft Cargo Webbing Restraint System with Spring Tension Reels
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Solution Overview
Problem
Current aircraft cargo restraint systems using straps or nets to secure cargo to the fuselage framework increase aircraft downtime due to the complexity and time required for securing the cargo.
Innovation Solution
An aircraft cargo restraint system incorporating a fuselage framework with spring tension reels and actuators that bias and move webbing to restrain cargo, allowing for efficient positioning and securing of cargo within the aircraft cabin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If straps or nets are used to secure cargo to the fuselage framework, then cargo restraint is achieved, but aircraft downtime increases
Solution Approach 1:
The patent employs dynamic webbing systems with spring tension reels and actuators that can rapidly adjust and secure cargo during loading/unloading operations. The webbing transitions from a static restrained state to an active securing state, enabling quick cargo restraint without manual strap adjustment, thereby reducing aircraft downtime while maintaining restraint effectiveness
Solution Approach 2:
The spring tension reels provide self-tensioning capability, automatically maintaining proper webbing tension without requiring continuous manual adjustment. The system serves itself by using spring force to maintain cargo restraint, eliminating the need for operators to continuously monitor and adjust strap tension, thus reducing time loss while ensuring reliable cargo security
2Reliability
If complex cargo restraint systems are used to secure cargo, then cargo security is improved, but system complexity increases
Solution Approach 1:
The webbing system serves multiple functions: it restrains cargo vertically, horizontally, and diagonally; it provides tensioning through spring reels; and it enables rapid deployment through actuators. This multi-functionality consolidates what would otherwise require multiple separate restraint mechanisms into a single integrated system, improving cargo security without proportionally increasing complexity
Solution Approach 2:
The system uses spring tension reels that automatically adjust webbing tension parameters based on cargo weight and position. The actuators modify the webbing configuration parameters (length, angle, tension) as needed during loading operations. These automatic parameter adjustments eliminate the need for complex manual calculation and adjustment procedures, maintaining high cargo security with simplified operation
3Reliability
If manual cargo securing procedures are used, then cargo restraint is achieved, but loading and unloading time increases
Solution Approach 1:
The spring tension reels are pre-loaded with spring force before cargo loading begins. The actuators are pre-positioned and ready for immediate operation. This preliminary preparation allows the webbing system to rapidly respond and secure cargo as soon as it is positioned, eliminating delays associated with manual tensioning and securing procedures, thus improving loading/unloading productivity while maintaining reliable cargo restraint
Solution Approach 2:
The patent replaces manual mechanical operations (hand-tied straps, manual net securing) with an automated actuator-driven webbing system. The actuators mechanically drive the webbing into position and the spring reels automatically maintain tension, substituting human labor with automated mechanical systems that operate faster and more consistently, thereby increasing productivity without compromising cargo restraint reliability
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 system reduces downtime by enabling rapid and secure restraint of cargo, allowing for quicker loading and unloading while maintaining effective weight and balance control during flight.
Implementation Method 1
one or more spring tension reels configured to bias the webbing towards a top or bottom of the cargo cabin
Data Source
AI summary
An aircraft cargo restraint system includes a fuselage framework defining a cargo cabin, a webbing configured to restrain cargo positionable within the cargo cabin, one or more spring tension reels configured to bias the webbing towards a top of the cargo cabin, and one or more actuators configured to move the webbing toward a bottom of the cargo cabin against the bias of the one or more spring tension reels.