Activatable Battery Inertia Timing Mechanism
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Solution Overview
Problem
Existing activatable batteries for electronic artillery and mortar fuses lack adequate protection against unwanted mechanical loadings, which can lead to unintended activation and reduced reliability.
Innovation Solution
The battery design features an immovably positioned ampoule in the lower battery portion, with an activation device in the upper portion that includes a rotatable inertia body and compression spring, allowing for controlled ampoule rupture without axial movement, thus preventing unintentional loadings and ensuring reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ampoule is disposed immovably in the lower battery portion, then protection against unwanted mechanical loadings is improved, but device complexity increases due to the two-part battery structure
Solution Approach 1:
The battery is divided into an upper battery portion and a lower battery portion, with the ampoule immovably disposed in the lower portion. This segmentation isolates the ampoule from mechanical loadings applied to the upper portion, improving reliability while managing complexity through functional separation.
Solution Approach 2:
The ampoule is extracted from the movable upper battery portion and fixed in the lower battery portion, removing it from the path of mechanical impulses. This extraction protects the ampoule from unwanted loadings while maintaining a structured two-part design.
2Ease of operation
If the battery is designed with compact dimensions and small diameter, then ease of operation is improved, but protection against mechanical loadings may be compromised
Solution Approach 1:
The battery uses a vertical two-part structure with the ampoule fixed in the lower portion, creating a dimensional separation that protects against mechanical loadings while maintaining a compact overall diameter. This vertical arrangement achieves protection without increasing horizontal dimensions.
3Reliability
If axial movement of the ampoule is eliminated, then protection against mechanical loadings is improved, but manufacturing precision requirements increase for fixed positioning
Solution Approach 1:
The ampoule is pre-positioned and immovably fixed in the lower battery portion during assembly, establishing its protected position before the battery is activated. This preliminary fixation ensures precise positioning without requiring complex adjustment mechanisms during operation.
4Ease of manufacture
If the activation device is separated from the ampoule into the upper battery portion, then ease of manufacture is improved, but device complexity increases
Solution Approach 1:
The activation device is segmented from the ampoule and placed in the upper battery portion, allowing independent manufacturing and assembly of the two components. This segmentation simplifies manufacturing processes while the integrated two-part structure manages 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
This design enhances safety and reliability by preventing unintended activation, allowing for compact construction, simplified installation, and reliable ampoule opening, meeting high safety demands for modern weapon systems while maintaining a small diameter.
Implementation Method 1
A compression spring is operative against displacement of the inertia body
Implementation Method 2
a timing member having an inertia body which is axially and rotatably displaceable
Data Source
AI summary
An activatable battery for an electronic artillery fuse and mortar fuse includes an ampoule filled with an electrolyte, and an activation device for rupturing the ampoule. In order to evaluate the duration of a mechanical impulse acting on the battery, the activation device can be freed by a timing member having an inertia body which is axially and rotatably displaceable and against which a compression spring is operative. A compact structure and reliable installation of the ampoule in the battery is achieved in that the battery has an upper battery portion and a lower battery portion, the activation device is provided in the upper battery portion and the ampoule is disposed immovably in the lower battery portion.