Shock Resistant Fuze Mounting Structures with Cripple Studs
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Solution Overview
Problem
Existing shock resistant structures fail to effectively absorb or divert extreme shock waves during pyroshock testing or warhead penetration, leading to damage of sensitive electronics in fuze systems, which can impair mission-critical operations.
Innovation Solution
The development of shock resistant mounting structures for fuze systems, including a shock resistant collar and fuze cap, featuring a ring-shaped housing and circular cap housing with radially disposed cripple studs made of metal, filled with urethane polymer, designed to deform and absorb shock energy, thereby protecting critical electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid mounting structures are used for fuze systems, then structural strength and stability are maintained, but shock waves during pyroshock testing or warhead penetration can mechanically break and damage sensitive electronics
Solution Approach 1:
The patent introduces a shock-absorbing mounting structure with compliant elements (such as elastomeric materials, foam, or spring mechanisms) installed beforehand between the fuze housing and mounting surface. These elements are designed to deform under shock loading, absorbing impact energy before it reaches the sensitive electronics, thereby protecting against pyroshock and penetration damage while maintaining structural integrity during normal operation
Solution Approach 2:
The patent employs composite mounting structures combining rigid and compliant materials. The housing may use strong rigid materials (aluminum, steel) for structural strength, while incorporating compliant layers (elastomers, foams, viscoelastic materials) that dissipate shock energy. This composite approach maintains structural stability while providing shock protection to electronics
2Object-affected harmful factors
If shock absorbing materials are added to the mounting structure, then shock wave damage is reduced, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent integrates shock-absorbing elements directly into the mounting structure housing or base plate as built-in features rather than separate components. For example, compliant ribs are formed directly in the housing, foam layers are bonded during housing assembly, or spring elements are incorporated into mounting brackets. This merging approach provides shock protection while minimizing additional parts and assembly steps
Solution Approach 2:
The mounting structure is designed to serve multiple functions simultaneously: providing structural support, enabling mechanical mounting, and absorbing shock loads. The compliant elements are positioned and dimensioned to perform both structural and shock-absorbing roles, eliminating the need for separate shock protection systems and reducing overall device complexity
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 and divert extreme shock loading energy, minimizing damage to sensitive electronics and ensuring fuze system reliability during sudden impacts or vibrations.
Implementation Method 1
The ring-shaped housing may be filled with a urethane polymer
Implementation Method 2
designed to deform and absorb shock energy
Implementation Method 3
one or more cripple studs radially disposed within the ring-shaped housing
Data Source
AI summary
Shock resistant mounting structures for fuze systems. The shock resistant mounting structures may comprise: a shock resistant fuze cap and a shock resistant collar. The shock resistant fuze cap may comprise a circular cap housing and a plurality of cripple studs disposed within the circular cap housing. The circular cap housing may be adapted to engage an upper portion of a fuze and may be adapted to snugly fit within a fuze well. The shock resistant collar may comprise a ring-shaped housing and one or more 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 fuze cap and shock resistant collar may be disposed within the fuze well and may minimize, prevent, or divert shock loading energy from entering a fuze.