Armored Cab Lower Surface Center Tunnel Blast Protection
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Solution Overview
Problem
Current armored vehicles are not adequately designed to withstand ground explosions, leading to injuries and deformation of lower portions during such events.
Innovation Solution
The armored cab features a unique lower surface design with a center tunnel and curved hulls that act as a pressure vessel, distributing pressure and reducing deformation in the event of an explosion, thereby protecting occupants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional armored vehicle lower portions are used, then the vehicle structure is simple, but the lower portions deform, rupture, or fail during ground explosions
Solution Approach 1:
The patent applies curvature to the lower surface by introducing a center tunnel with elliptical exterior curvature and variable radius. This curved geometry allows the structure to better distribute blast pressures and resist deformation during ground explosions, directly addressing the weakness of conventional flat or simple lower portions
Solution Approach 2:
The lower surface is segmented into distinct functional zones: a center tunnel portion with elliptical curvature, first and second outer portions with convex curvature, and transition portions connecting them. This segmentation allows each zone to be optimized for specific blast protection functions while maintaining overall structural integrity
2Reliability
If the lower surface is designed with complex curvature to withstand explosions, then blast protection is improved, but manufacturing difficulty increases
Solution Approach 1:
The elliptical and convex curvatures, while complex in shape, follow geometric principles that can be manufactured using standard automotive body forming techniques. The variable radius of the center tunnel and the transition portions can be achieved through controlled rolling and forming processes
Solution Approach 2:
Different regions of the lower surface have different curvature characteristics optimized for their specific functions: the center tunnel has elliptical curvature for pressure distribution, outer portions have convex curvature for blast deflection, and transition portions have variable radius for smooth stress distribution. This localized optimization maintains manufacturability while achieving superior blast 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 design effectively reduces injuries to occupants by distributing pressure and preventing material failure, making the vehicle safer in areas prone to ground explosions.
Implementation Method 1
The center tunnel is configured to act as a pressure vessel in the event of an explosion beneath the armored cab
Implementation Method 2
The center tunnel has an exterior curvature with a variable radius extending upward along the transverse axis and downward from the center tunnel upper boundary
Data Source
AI summary
An exterior shell for an armored cab having a longitudinal axis and a transverse axis is provided. The exterior shell has a right side panel extending parallel to the longitudinal axis, a left side panel extending parallel to the longitudinal axis, and a rear panel extending parallel to the transverse axis. A cab lower surface extends between the right side panel and the left side panel. The cab lower surface has a center tunnel extending along the longitudinal axis with an exterior curvature having a variable radius as the center tunnel extends along the transverse axis of the exterior shell. The center tunnel is configured to act as a pressure vessel in the event of an explosion beneath the armored cab.