Shock-Filtering Support System with Breakable Bars for Vessel Equipment
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Solution Overview
Problem
Existing resilient threshold supports for suspending equipment on ships, such as missile launch containers, fail to effectively absorb shocks like those from underwater explosions and do not maintain the container in the correct firing position, leading to potential damage to the ammunition and alignment issues.
Innovation Solution
An elastic support system with shock filtration threshold, comprising metal coil damper assemblies and breakable bars under prestress, symmetrically arranged around the container, which absorb and distribute shock forces to protect the ammunition and maintain alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container is rigidly fixed to the ship structure, then the container is securely positioned, but shocks are transmitted in full to the ammunition
Solution Approach 1:
The support system is divided into multiple independent elements: multiple coil springs arranged at different locations, breakable bars positioned between the container and ship structure, and damping elements. This segmentation allows the system to absorb and distribute shock forces across multiple components rather than transmitting them directly to the ammunition.
Solution Approach 2:
The breakable bars are pre-installed between the container and ship structure to provide immediate shock absorption capability. These bars are designed to break at predetermined shock levels, cushioning the ammunition from high-g shocks before they can cause damage, while still maintaining normal positioning stability during routine operations.
2Object-affected harmful factors
If resilient support elements are added to absorb shocks, then shock transmission is reduced, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated components: the breakable bars serve both as structural support elements and as shock-absorbing mechanisms that fail safely at predetermined thresholds. The coil springs provide both positioning stability and shock absorption, while damping elements are integrated into the same assembly. This merging reduces overall system complexity compared to having separate systems for each function.
Solution Approach 2:
The breakable bars are designed as sacrificial elements that are discarded (broken) when subjected to extreme shocks that would otherwise damage the ammunition. After such an event, only the broken bars need to be replaced rather than the entire support system, simplifying maintenance and recovery operations.
3Object-affected harmful factors
If the support system is made more complex to absorb shocks, then ammunition protection is improved, but ease of manufacture decreases
Solution Approach 1:
The support system is segmented into discrete, standardized components: identical coil springs, uniform breakable bars with standardized dimensions and material properties, and modular damping elements. Each component can be manufactured independently using standard fabrication processes, and the segmented design allows for straightforward assembly and disassembly during installation and maintenance.
Solution Approach 2:
The breakable bars are designed with specific material parameters and geometric dimensions that determine their breakage threshold. By controlling these parameters during manufacturing (material selection, cross-sectional area, length), the bars can be precisely tuned to break at predetermined shock levels. This parameter-based design simplifies manufacturing compared to creating complex variable-geometry structures.
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 shock transmission to the ammunition, maintaining the container's alignment and reducing mechanical stress on the launcher and ship interfaces, allowing for safe handling of various ammunition loads and shock conditions.
Implementation Method 1
damping means with shock filtration threshold comprising at least one damper assembly with metal coils
Implementation Method 2
damper assembly with metal coils associated with bars with breaking threshold mounted under prestress between the two flanges
Implementation Method 3
bars with breaking threshold mounted under prestress between the two flanges
Implementation Method 4
bars with breaking threshold mounted under prestress
Data Source
AI summary
The invention relates to a shock-filtering set-point resilient supporting system intended, in particular, for equipment (1) suspension on board a vessel. The system is characterised in that it includes an equipment-bearing base (8) associated with a supporting base (9) of the vessel by means of set-point damping means (10) comprising at least one damping assembly including metal coils (11, 12) associated with rupture set-point bars (17, 18) mounted under pre-stress between the two bases (8, 9).