John Paul Fallon
Dynamic Sonar Mount
August 2022APL3 months

Dynamic Sonar Mount

Designed a dynamic mounting solution for a research sonar that enables seamless transition between operational and storage positions on a submersible truss system.

CADGD&T3D PrintingMechanical DesignZ-ULTRAT

Overview

The Problem

Design and implementation of a mounting solution for a research sonar that attaches to the vessel's submersible sensor truss while avoiding beam interference during operation.

The Solution

Developed a compartmental, two-position mounting system with hydrodynamic design that allows secure transition between operational and storage positions.

Key Outcomes

  • Successfully implemented dynamic positioning system
  • Achieved interference-free sonar operation
  • Created durable design for marine environment
  • Simplified assembly and maintenance process

My Role

Lead Mechanical Designer

Design Challenges & Solutions

Sonar Beam Interference

Given the structure of the truss and surrounding components, there was no static solution where the sonar could rest safely within the boundary of the truss and operate without interference.

2-Position Track System

This led to the idea of a dynamic, two-position system. I created a system requiring only hand-tightening to transition between positions, eliminating the need for tools in offshore environments where items can easily fall overboard.

Environmental Durability

The mount needed to withstand extended submersion in both fresh and saltwater, as well as long-term storage. This inspired durable material selection including aluminum, corrosion-resistant stainless steel, and specialized Z-ULTRAT filament.

Compartmental Design

Implemented an easy-to-assemble design using bolted 3D-printed components with heat-inserts, enabling simple assembly, breakdown, and replication of parts as needed.

Additional Design Approaches

Hydrodynamic Considerations

Incorporated hydrodynamic design elements and strategic cutouts to minimize forces on the hardware during operation, ensuring durability and reliable data collection.

Impact & Results

Impact

The mounting solution enabled reliable sonar operation while solving key challenges of beam interference and marine durability, providing a practical solution for both operational and storage requirements.

Efficiency

Reduced installation time by 300% compared to previous solutions requiring removal and reinstallation

Usability

No tools needed during operation, improving offshore workflow

Durability

Withstood multiple deployment cycles with no performance degradation

Key Takeaways

  • Advanced 3D printing techniques including heat insert implementation
  • Design principles for dynamic, secure mechanical systems
  • GD&T and manufacturing considerations for milled parts
  • Effective collaboration with machine shop for manufacturing

Skills Developed

3D PrintingMechanical DesignGD&TManufacturingMarine EngineeringCAD ModelingMaterial Selection

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