Switchable Fuze Modes for Guided Munitions
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Solution Overview
Problem
Existing guided munitions lack the ability for a remote operator to switch the mode of operation of the fuze during flight, limiting flexibility in targeting scenarios where initial fuze settings may not be optimal.
Innovation Solution
A switchable-mode guided munition equipped with an imaging sensor, an explosive charge, and a communication system that allows a remote operator to switch the fuze arrangement between delayed detonation, impact detonation, proximity detonation, and a disabled state in real-time during flight, enabling adaptive fuze operation based on changing target conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fuze mode is fixed prior to launch, then the device complexity is reduced, but the adaptability to changing target conditions deteriorates
Solution Approach 1:
The fuze mode is changed from a static, pre-launch configuration to a dynamic, in-flight selectable configuration. The remote operator can switch between proximity, impact, and delay fuze modes during the munition's flight based on real-time target conditions observed through the imaging sensor, making the system adaptable to changing circumstances.
Solution Approach 2:
The fuze operational parameters (proximity distance, delay time, impact sensitivity) are made changeable during flight. The communication system transmits mode selection commands from the remote operator to the fuze control circuitry, allowing parameter adjustment without physical modification to the munition.
2Adaptability or versatility
If multiple fuze modes are provided, then the versatility is improved, but the device complexity increases
Solution Approach 1:
A single fuze arrangement is designed to perform multiple functions (proximity detonation, impact detonation, and delayed detonation) through electronic control. The fuze control circuitry can be reconfigured during flight to execute different detonation modes, eliminating the need for multiple separate fuze devices while maintaining versatility.
Solution Approach 2:
The communication system and control circuitry act as intermediaries between the remote operator and the fuze mechanism. This intermediary layer allows a single fuze arrangement to be controlled in multiple modes through electronic signaling, reducing physical complexity while maintaining operational versatility.
3Ease of operation
If the fuze mode can be switched during flight, then the operational flexibility is improved, but the reliability may deteriorate due to additional switching mechanisms
Solution Approach 1:
The fuze system includes built-in control circuitry that can autonomously execute the selected detonation mode based on commands received during flight. The system self-manages the mode transition without requiring external intervention or complex mechanical switching mechanisms, thereby maintaining reliability while providing operational flexibility.
Solution Approach 2:
The imaging sensor provides real-time feedback about target conditions to the remote operator, who then selects the appropriate fuze mode. This feedback loop ensures that mode selection is based on actual observed conditions, increasing the likelihood of correct fuze mode selection and maintaining system reliability through informed decision-making.
Data Source
AI summary
A method for operating a guided munition with a switchable fuze arrangement includes launching the guided munition towards a target. During flight of the guided munition, images are provided to a remote operator, who supplies a switching input. Responsive to said switching input, the fuze arrangement is switched to either of at least two of the following states: a delayed detonation state in which detonation of the explosive charge is delayed by a time delay after impact of the guided munition, an impact detonation state in which detonation of the explosive charge occurs on impact of the guided munition, a proximity detonation state in which detonation of the explosive charge is triggered by a proximity sensing arrangement, and a disabled state in which the guided munition functions as a guided kinetic shell without detonation of the explosive charge.