Semi-Submersible Sonar Platform for Low-Detectability Sub Tracking
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Solution Overview
Problem
The challenge of detecting and tracking submarines effectively while maintaining operational stealth, particularly in challenging environments like the Baltic Sea or North Atlantic, is hindered by the limited range and vulnerability of helicopters and the lack of sonar capabilities in modern warships.
Innovation Solution
A semi-submersible watercraft with a retractable keel and unmanned operation, equipped with sonar systems and towed sonar, designed to detect submarines autonomously or remotely, minimizing radar cross-section and operational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a surface platform is used for tracking submarines, then the platform can operate on the water surface for extended periods, but the platform becomes visible and detectable by submarines
Solution Approach 1:
The platform is divided into multiple floating bodies that can operate independently or in coordination. This segmentation allows the platform to maintain surface presence for extended durations while distributing the detectability risk across multiple smaller, less conspicuous units.
Solution Approach 2:
The platform transitions between different operational dimensions by submerging its floating bodies when not actively tracking submarines. This dimensional change from surface operation to submerged state reduces detectability while maintaining the capability for extended operational duration when needed.
2Adaptability or versatility
If the platform operates in ice-covered waters, then the platform can access polar regions for submarine tracking, but ice conditions reduce maneuverability and increase operational complexity
Solution Approach 1:
The platform employs dynamic positioning systems and adjustable propulsion mechanisms that adapt to varying ice conditions. The floating bodies can adjust their positioning and movement patterns in real-time to navigate through ice-covered waters, maintaining maneuverability across different environmental conditions.
Solution Approach 2:
The platform modifies its operational parameters such as speed, positioning, and configuration based on ice conditions. By changing these parameters dynamically, the platform maintains ease of operation across diverse environments including ice-covered waters, thereby expanding its adaptability without permanently sacrificing maneuverability.
3Measurement precision
If active sonar is used for submarine detection, then detection range is improved, but the sonar can be detected by submarines equipped with passive sonar
Solution Approach 1:
The active sonar system operates in periodic pulses rather than continuously. This periodic operation allows the platform to achieve extended detection range when needed while remaining undetected by passive sonar between pulses, effectively managing the trade-off between detection capability and operational secrecy.
Solution Approach 2:
The platform uses active sonar partially rather than continuously, deploying it only when detection range requirements exceed passive capabilities. This partial action approach maintains detection secrecy by limiting active sonar usage to necessary moments while still achieving extended detection capability when required.
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 semi-submersible design enhances sonar detection capabilities, reduces detection risk, and operates cost-effectively, allowing operation at greater distances from convoys and in various sea conditions, filling the capability gap in modern fleets.
Implementation Method 1
the watercraft (10) has at least a first sonar for detecting submarines
Implementation Method 2
the watercraft (10) has at least a second sonar for detecting the watercraft (10)
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to a watercraft 10, wherein the watercraft 10 is designed as a semi-submersible boat, wherein the watercraft 10 is configured for unmanned operation, wherein the watercraft 10 has a hull 150 and a turret 40 arranged on the hull 150, wherein the hull 150 has at least a first watertight hull region 160 and at least a first water-flooded hull region 230, wherein the watercraft 10 has a propulsion unit in the first watertight hull region 160, wherein the watercraft 10 has at least a first sonar for detecting submarines.