Shock Resistant Fuze Mounting Structures Using Cripple Studs
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Solution Overview
Problem
Existing shock resistant structures fail to effectively absorb or divert extreme shock energy during pyroshock testing or warhead penetration, leading to damage of sensitive electronics in fuze systems.
Innovation Solution
The implementation of shock resistant mounting structures featuring metal cripple studs with I-beam or cross-shaped cross sections, filled with urethane polymer, which deform to absorb or divert shock energy, integrated into a ring-shaped washer and circular cap housing configurations to protect critical electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid mounting structures are used, then structural strength is maintained, but shock energy is transmitted to sensitive electronics causing damage
Solution Approach 1:
The patent incorporates shock-absorbing materials and compliant mounting structures in advance within the fuze housing, positioned between the rigid housing and sensitive electronics. These pre-installed cushioning elements deform during shock events to absorb energy before it reaches the electronics, resolving the contradiction by maintaining structural integrity while protecting against shock transmission.
Solution Approach 2:
The patent uses composite construction combining rigid materials for the housing structure with compliant shock-absorbing materials for mounting brackets and isolators. This composite approach allows the structure to maintain overall strength while specific components provide shock attenuation, simultaneously achieving structural strength and shock energy absorption.
2Object-affected harmful factors
If shock-absorbing materials are added to protect electronics, then shock resistance improves, but device complexity increases
Solution Approach 1:
The patent integrates shock-absorbing functionality directly into existing mounting brackets and structural components rather than adding separate protective systems. The mounting brackets are designed with compliant features that provide both mechanical support and shock absorption, merging structural and protective functions to avoid increasing device complexity.
Solution Approach 2:
The patent designs mounting components to serve multiple functions: structural support, shock absorption, and vibration isolation. These multi-functional elements replace what would otherwise require separate dedicated components, achieving shock protection without proportionally increasing device complexity.
3Object-affected harmful factors
If compliant mounting structures are used to absorb shock, then shock energy is minimized, but structural strength may be compromised
Solution Approach 1:
The patent applies compliant shock-absorbing features only at specific locations where shock transmission occurs, rather than making the entire structure compliant. The rigid housing maintains overall strength while localized compliant mounting points absorb shock energy, resolving the contradiction by maintaining strength where needed and providing compliance where shock absorption is required.
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
These structures effectively absorb or divert extreme shock loading energy, minimizing damage to sensitive electronics and ensuring fuze system reliability during tactical environments.
Implementation Method 1
the one or more cripple studs may extend between opposing sides of the ring-shaped housing... Each of the one or more cripple studs may have an I-beam cross section with a web portion having a maximum thickness of 0.25 inches... These structures effectively absorb or divert extreme shock loading energy
Implementation Method 2
The ring-shaped housing may be filled with a urethane polymer... effectively absorb or divert extreme shock loading energy, minimizing damage to sensitive electronics
Data Source
AI summary
Shock resistant mounting structures for fuze systems. The shock resistant mounting structures may comprise: a shock resistant base cap and a shock resistant washer. The shock resistant base cap may comprise a circular cap housing and a plurality of first cripple studs disposed within the circular cap housing. The circular cap housing may be configured to engage a flange end of a fuze and may be adapted to snugly fit within a fuze well. The shock resistant washer may comprise a ring-shaped housing and one or more second cripple studs radially disposed within the ring-shaped housing. The ring-shaped housing may have a center opening adapted to engage a fuze body. When installed, the shock resistant base cap and shock resistant washer may be disposed within the fuze well and may minimize or divert shock loading energy from entering a fuze.