1. Aircraft Carrier Draft Measurement
Ship Draft Team - Fall 2015

2. Project Overview

3. Introduction
Newport News Shipbuilding partnered with Old Dominion University to develop a draft measuring system for use on naval aircraft carriers and submarines
Guidelines
Economical
Reduction of risk to personnel
Non-permanent mounting

4. Summer Overview
The summer team performed a detailed comparison of non-contacting ultrasonic range finders versus laser range finders
The team determined that ultrasonic systems were superior for measuring distance from a liquid surface

5. Sonar Overview

6. Ultrasonic (Principles)
The ultrasonic range sensor sends a high frequency sound wave toward the water surface. The wave is then reflected back to the sensor.
The distance from the sensor to the water surface is calculated based on the time of flight of the sound wave.

7. Fall Team Collaboration

8. Electronics System

9. Electronics System
Researched hardware that met the requirements of the project
Arduino micro processor development board
Arduino compatible ultrasonic range sensor
Arduino compatible temperature sensor
Arduino compatible Bluetooth module

10. Current Electrical Work
Researching software for each component
Testing each component for functionality with code
Making necessary adjustments
Integrating components into full system

11. Current Electrical Work

12. Future Electrical Work
Develop reliable Bluetooth transmittance from module to pc
Develop human interface signal-light code
Calibrate instrumentation
Perform full system testing

13. Current User Interface Work
Develop Graphic User Interface (GUI) using ‘LabVIEW’
Finalize layout of interface
LED on/off
Draft
Temperature
Humidity
Develop communication between Arduino processor and LabVIEW

14. Future User Interface Work
Convert signal output to integrate Bluetooth wireless system
Present functional interface to shipyard liaison for user feedback

15. Testing Hardware

16. Current Work
Ultrasonic sensor requires a clearance of 30 cm, so a small test tank would not suffice
Designed floating test structure in SolidWorks
“Styrofoam pontoon”
Shipyard liaison recommended redesign for mountable test structure

17. Future Work Modify existing test rig created by the summer team
Conduct initial testing using pre-existing tank
Perform data collection and calibration on sensor readings

18. Hull Attachment and Housing

19. Current Work
Created a 3D design of magnetic self-leveling hull attachment mounting system using Autodesk Inventor
Rapidly prototyped the mounting system using the MakerBot Z18 3D printer
Created a 3D design of the sensor enclosure
Implemented elements to weatherproof the enclosure

20. Assembly

21. Future Work
Optimize the design of the hull attachment mounting system and sensor enclosure using finite element analysis
Strength
Cost
Production time
Functionality

22. Project Materials Budget

23. Budget
Received $300 start up money from the Department of Mechanical Engineering
Submitted undergraduate funding proposal of $1000
Current expenses : $236

24. Gantt Chart

25. Gantt Chart (Task Assignments)

26. Gantt Chart (Completion Status)

27. Acknowledgements Faculty advisor Shipyard Liaison
Dr. Miltiadis Kotinis
Shipyard Liaison
Butch Brenton – Manager Engineering 3, Networks, Communication, and Automation
Department of Mechanical and Aerospace Eng.
David Mooney – Team Manager
Sam Harpin
David Mann
Philip Stickle
Devin Samples-Wright
Thomas Wheeless
Department of Electrical and Computer Eng.
Ashley Smith
Department of Engineering Tech.
Ashley Wilson – EET

28. Questions