Accelerometer Mounting for Penetrator Shock Isolation
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Solution Overview
Problem
Conventional penetrator systems struggle to accurately detect thin or soft layers within shelters due to low deceleration signals being masked by noise, leading to potential misplacement of explosive charges, and are susceptible to mechanical amplification during impact and penetration, which can damage sensors and affect accuracy.
Innovation Solution
A fuze mounting system with a bolted flange configuration that securely attaches an accelerometer to the projectable device, reducing mechanical amplification and noise interference, allowing for more accurate detection of various layer types by isolating the sensor from shock and improving signal reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional penetrator systems use standard accelerometer mounting, then the system can detect media layers, but the accelerometer is susceptible to mechanical amplification during impact and penetration, causing sensor damage and reduced accuracy
Solution Approach 1:
The patent introduces a specialized mounting structure as an intermediary between the accelerometer and the penetrator body. This mounting structure includes shock-absorbing elements and isolation mechanisms that mediate the transmission of impact forces, reducing mechanical amplification to the sensor while maintaining operational functionality during penetration operations
2Measurement precision
If conventional penetrator systems use standard accelerometer mounting, then the system can operate during penetration, but low deceleration signals from thin or soft layers are masked by noise, leading to inaccurate detection
Solution Approach 1:
The mounting structure serves as a noise-isolating intermediary that filters out high-frequency vibration and shock noise while preserving the lower-frequency deceleration signals generated when the penetrator encounters thin or soft media layers, thereby improving signal-to-noise ratio and detection accuracy
3Reliability
If the accelerometer is securely attached to reduce mechanical amplification, then sensor survivability improves, but the mounting structure becomes more complex
Solution Approach 1:
The patent merges the mounting structure with the existing penetrator assembly by integrating shock-absorbing elements into the fuze housing or mounting bracket, combining multiple functions (attachment, shock isolation, and signal transmission) into a unified structure that reduces overall system complexity while maintaining sensor protection
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 solution enhances the accuracy of penetrator systems by reducing mechanical amplification and noise, enabling better detection of thin, soft, or hard layers, thereby improving the precision of explosive charge deployment and increasing the shock survivability of the accelerometer.
Implementation Method 1
a sensor (such as an accelerometer) associated with and coupled to the penetrator
Data Source
AI summary
A fuze for a weapon configured as a projectable device is provided to reduce the mechanical amplification of impact and penetration shock to a fuze-mounted accelerometer when a projectable device including the fuze encounters a target. The fuze includes a fuze housing having an outer surface, a flange extending radially from the outer surface of the fuze housing, and an acceleration sensor connected to the flange. The flange may include one or more axial holes to enable attachment of the fuze to a projectable device. A penetrating weapon projectable device and a method for installing a fuze for a projectable device are also provided.