Multiple Payload Expendable Device Voltage-Coded Squib Circuit
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Solution Overview
Problem
Current chaff deployment systems, such as the AN/ALE-47, are limited to single payload functionality, requiring costly retrofits to support dual or multiple payload configurations, and face challenges with mechanical squib orientation and voltage polarity, which complicates installation and reduces operational reliability.
Innovation Solution
A Multiple Payload Expendable Device with cylindrical payload cartridges and a voltage-coded squib actuating circuit that allows for dual voltage actuation, ensuring correct squib orientation and polarity, enabling the deployment of multiple payloads without modifying existing hardware, using a dual Zener diode circuit to manage voltage and prevent misinstallation errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing single payload systems are retrofitted to support dual or multiple payload configurations, then payload capacity is improved, but hardware modification costs and system complexity increase
Solution Approach 1:
The patent implements a universal cartridge design where a single cartridge type can function as either single or dual payload configuration. The cartridge includes two payload chambers separated by a partition, with the ability to install one or two payload containers depending on mission requirements. This multi-functional design eliminates the need for different cartridge types or hardware modifications to achieve multiple payload capabilities.
Solution Approach 2:
The cartridge is segmented into two independent payload chambers separated by a partition wall. Each chamber can be independently filled with different payload types (chaff, flares, etc.) and ignited by separate squibs. This segmentation allows flexible configuration where one or both chambers can be activated based on operational needs, providing dual payload capability without requiring complete system replacement.
2Reliability
If mechanical squib orientation and voltage polarity requirements are enforced, then firing reliability is improved, but installation difficulty and time increase
Solution Approach 1:
The patent employs asymmetric electrical connection design where the squibs have distinct positive and negative terminals with different lengths or colors. The connector is designed with corresponding asymmetric contacts that only mate correctly when the squib is inserted in the proper orientation. This asymmetric design provides mechanical and electrical guidance that ensures correct polarity connection without requiring complex alignment procedures or specialized training.
Solution Approach 2:
The squib and connector design incorporates self-aligning features where the physical geometry of the components guides correct installation automatically. The asymmetric terminal lengths and connector contact positions create a self-correcting mechanism that prevents incorrect installation and ensures proper electrical connection without requiring external verification or adjustment by the installer.
3Reliability
If voltage-coded squib actuating circuit with dual Zener diodes is implemented, then misinstallation error prevention is improved, but circuit complexity increases
Solution Approach 1:
The patent introduces Zener diodes as intermediary protective components in the firing circuit. These diodes are positioned between the power source and the squibs to regulate voltage and prevent reverse polarity damage. The Zener diodes act as electrical guardians that automatically block incorrect voltage polarity and limit voltage spikes, preventing misinstallation errors without requiring complex control logic or additional sensing circuits.
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
Enables the conversion of existing single payload systems to multiple payload systems without hardware changes, enhancing operational reliability, reducing installation risks, and maintaining compatibility with existing AN/ALE-47 systems, potentially saving billions in hardware and software expenses.
Implementation Method 1
A squib generates a mechanical force for forcing chaff from a cylindrical payload cartridge
Implementation Method 2
A fluid passage transmits the mechanical force to the chaff
Data Source
AI summary
This disclosure relates generally to a Multiple Payload Expendable Device consisting of a set of cylindrical multiple payload casings, each payload casing exhibiting circular symmetry fluid passages in relation to firing squibs and voltage coded squib actuating circuit that converts existing single payload expendable device systems to multiple payload expendable device systems.