Motion Analysis Unit for Missile Safety
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Solution Overview
Problem
Current missile technology lacks precise sensing of rocket motor performance, particularly in determining flight profiles, safe separation distances, and timing of events like stage separation or warhead function, and requires redundant safety systems with additional devices and cabling.
Innovation Solution
A motion analysis unit with multiple independent circuits and algorithms implemented in an anti-fuse FPGA, using accelerometers to detect initial launch acceleration, verify safe separation distance, and integrate data for accurate velocity and distance calculations, eliminating the need for separate circuit interrupters and reducing errors through redundancy and fail-safe mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distributed safety systems with additional devices and cabling are used, then safety coverage is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent combines multiple independent safety functions (motion detection, distance measurement, profile verification, timing) into a single integrated motion analysis unit. This consolidation maintains comprehensive safety coverage while eliminating the need for multiple separate devices, cabling, and connectors that would otherwise be required in a distributed safety system.
Solution Approach 2:
The motion analysis unit performs multiple safety-critical functions simultaneously: detecting initial motion, measuring distance traveled, verifying motor profiles, and timing events. This multi-functional approach replaces what would traditionally require multiple specialized devices, reducing system complexity while maintaining or enhancing safety coverage.
2Measurement precision
If multiple independent circuits and redundant systems are implemented, then measurement precision and reliability are improved, but device complexity increases
Solution Approach 1:
The patent implements multiple independent measurement circuits (accelerometers, distance measurement, profile measurement) within a single integrated unit. This consolidation provides redundant measurement capabilities for enhanced precision while avoiding the complexity of multiple separate physical systems with their associated cabling and connectors.
Solution Approach 2:
The motion analysis unit acts as an intermediary that receives data from multiple sensors and processing circuits, integrates this information, and produces unified safety-critical outputs. This centralized intermediary approach maintains the benefits of multiple independent measurement paths while simplifying the overall system architecture.
3Reliability
If separate circuit interrupters are used for safety functions, then safety reliability is improved, but ease of operation and system integration are worsened
Solution Approach 1:
The patent integrates multiple safety functions that would traditionally require separate circuit interrupters into a single motion analysis unit. This consolidation maintains safety reliability through independent measurement circuits while dramatically simplifying installation and operation by eliminating the need to wire and coordinate multiple separate interrupter devices.
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 provides enhanced accuracy in determining vehicle motion and initiating actions, increasing precision by approximately 20% and reducing measurement errors, while ensuring safety through autonomous validation and integration of subsystems into a single unit.
Implementation Method 1
use data from a measured acceleration of the vehicle
Data Source
AI summary
A motion analysis system includes an acceleration measuring device, an acceleration processor, a velocity processor, a distance processor, a peak velocity processor, a profile correlation processor, and a vehicle action processor. The system determines a time for an initiation of an action for a vehicle by determining that a distance traveled by the vehicle is greater than a safe separation distance and that a peak velocity is greater than a minimum velocity. The system initiates the action for the vehicle based on the verified position of the vehicle and the confirmed profile data as determined by the profile correlation processor, and based on the determination that the distance traveled by the vehicle is greater than the safe separation distance and that the peak velocity is greater than the minimum velocity as determined by the vehicle action processor.