Warhead Casing Aft Wall Integral Design
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Solution Overview
Problem
Existing warhead casings for penetration-type bombs are vulnerable to premature structural failure due to stress concentration at sensor sockets and aft closure detachment upon impact, leading to malformed explosion patterns.
Innovation Solution
A warhead casing design with an integrally formed aft wall and a sensor socket positioned in the tail region, eliminating peripheral openings in the tubular body and using a fuse socket with a smaller diameter to prevent detachment, ensuring structural integrity during impact and proper explosion direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sensor socket is positioned in the tubular body region to enable sensor communication with the fuse, then the sensor can detect environmental conditions and trigger detonation, but the casing becomes vulnerable to premature structural failure due to stress concentration at the socket
Solution Approach 1:
The sensor socket is extracted from the tubular body region and repositioned to the tail region, removing the stress concentration point from the critical impact zone while preserving sensor communication functionality with the fuse
Solution Approach 2:
The socket position is shifted from a radial extension through the body wall to a location in the tail region, changing the spatial dimension of the opening and eliminating its harmful structural effects
2Ease of operation
If an aft closure device is used to close the tail region opening and retain the fuse, then the fuse is secured in place, but the aft closure is susceptible to premature detachment when the casing compresses axially and expands radially upon impact
Solution Approach 1:
The aft closure device is merged with the tail region structure through integral formation, creating a unified component that eliminates the interface between the closure and the tail, thereby preventing premature detachment during impact
Solution Approach 2:
The aft wall is designed as a separate integral component within the tail region, creating a segmented structure that maintains fuse retention while providing independent structural strength to resist impact forces
3Adaptability or versatility
If the aft closure is removably attached to the tail region, then the fuse can be retained, but the attachment is weakened by radial expansion during impact, causing disengagement and malformed explosion patterns
Solution Approach 1:
The aft closure and tail region are merged into an integral structure, eliminating the removable attachment interface and ensuring that the fuse retention function is maintained while the structural strength is enhanced through the unified design
Data Source
AI summary
A warhead casing includes a nose region, a tail region, a tubular body region, and a central cavity extending along a lengthwise axis and having a first axial end and a second axial end. An aft wall is formed integrally with the tail region and extends radially toward the lengthwise axis to define the second end of the central cavity, and includes an aperture configured to receive a fuse device. A method of manufacturing a warhead casing includes forming a nose portion, a body portion, and a tail portion. The tail portion includes a circumferential outer wall defining an inner cavity, and an aft wall integrally formed with the circumferential outer wall and extending radially inward to define an axial end of the inner cavity. At least one of the nose portion or the tail portion is joined to the body portion.