Inflatable Impact Attenuator for Parachuted Cargo
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Air-dropped palletized cargo faces significant impact damage issues due to high landing forces, with existing cushioning systems failing to protect the top surface and undercarriage adequately, leading to potential vehicle damage and instability during landing.
Innovation Solution
A system comprising a pallet with lower and upper pneumatic cushioning assemblies, including inflatable bladders and compression pads, which are interconnected with a pressurized air source and strategically positioned to absorb impact forces, providing comprehensive cushioning for both the cargo and undercarriage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If known balloons are positioned between the pallet and the bottom surface of the cargo, then the impact forces on the bottom of the cargo are reduced, but the top surface and undercarriage of the cargo remain unprotected
Solution Approach 1:
The cushioning system is divided into three distinct segments: lower balloons positioned between the pallet and cargo bottom surface, compression pads positioned against the undercarriage, and upper balloons positioned against the top surface. Each segment addresses specific impact zones, collectively providing comprehensive protection that a single balloon system cannot achieve.
Solution Approach 2:
The protection system transitions from one-dimensional (single layer between pallet and cargo) to three-dimensional coverage by adding protective elements at the bottom, sides (via compression pads), and top of the cargo, creating全方位 protection against impact forces from multiple directions.
2Stability of the object's composition
If the pallet has a relatively high center of gravity, then the structural stability during transport is reduced, but adding more cushioning elements increases device complexity
Solution Approach 1:
The lower balloons are strategically positioned to provide counterbalancing support that compensates for the high center of gravity effect during landing impact. The compression pads against the undercarriage also contribute to stabilizing the pallet-cargo assembly, reducing the risk of overturning while maintaining the necessary cushioning complexity.
3Object-affected harmful factors
If the descent rate is increased to reduce exposure to hostile fire, then the impact forces on the cargo are magnified, but reducing descent rate increases exposure time to hostile fire
Solution Approach 1:
The cushioning system, particularly the lower balloons and compression pads, is prepared and positioned in advance before the high-speed descent and impact. This beforehand cushioning allows the system to withstand the magnified impact forces resulting from increased descent rates, enabling faster delivery that reduces exposure to hostile fire while maintaining cargo protection.
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 effectively reduces impact damage to air-dropped cargo by distributing and absorbing landing forces, protecting the top surface and undercarriage, ensuring the vehicle's integrity and readiness for immediate use post-landing.
Implementation Method 1
lower and upper pneumatic cushioning assemblies, including inflatable bladders and compression pads, which are interconnected with a pressurized air source and strategically positioned to absorb impact forces
Implementation Method 2
The system effectively reduces impact damage to air-dropped cargo by distributing and absorbing landing forces
Data Source
AI summary
A system for cushioning airdropped cargo includes a pallet supporting associated cargo. At least one lower inflatable impact attenuator in the form of a pneumatic cushion is positioned between the pallet and the cargo. A compression pad is positioned between the lower pneumatic cushion and the cargo. At least one upper pneumatic cushion is positioned atop the cargo. A parachute is connected by parachute rigging to the pallet.