Underwater Activities

8/22/2019 Underwater Activities

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Schedule

8 - 8:15 Introductions/proposed work together

8:15 - 9:00 Introduction to the underwater robotics

9:00 - 9:30 The proposed underwater activities

9:30 - 9:45 Break

9:45 - 11:00 Prepare an underwater activity

11:00 - 11:30 Groups demo their activities

11:30 - 11:45 Cleanup

11:45 - 12:00 Close and exit survey


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Underwater Robotics Development

Test possible underwater activities

Feedback on how they worked/didnt work

Create links to other subjects/topics/concepts Create new activities

Post everything to http://www.ceeo.tufts.edu/underwater


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Underwater Robotics

Robots underwater! But why?

The ocean is highly unexplored

Navy/Oceanographic Institutes

Alvin/Jason II

ROV vs. AUV


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Underwater Robotics with LEGOs

Motors, wires, and all traditional pieces work in water

RCX and sensors do NOT work in water

Additional materials Propellers (www.hobby-lobby.com or

www.towerhobbies.com)

Foam (or some sort of floatation aid)

RCX case (www.microelectronics.com) and Aquaseal
http://www.hobby-lobby.com/http://www.towerhobbies.com/http://www.microelectronics.com/http://www.microelectronics.com/http://www.towerhobbies.com/http://www.hobby-lobby.com/http://www.hobby-lobby.com/http://www.hobby-lobby.com/


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Underwater curriculum

Possible areas of focus

Robotics

Water quality and testing Ecosystem exploration (MBARI)


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Underwater Robotics Activities


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Activities

Activity outline

Boat that floats (buoyancy and density)

Have a BalLAST (neutral buoyancy, density, and ballasts)

Prop-line (propulsion, drag, and friction) - Prop-line contd (gears)

Dizzy boat (torque)

Building project (choose one or both)

Slalom boat (engineering)

ROV (engineering)


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Boat that floats

Introduce building with LEGOs

Concepts of:

Buoyancy

Density Stability

Misconceptions of what

does/doesnt float

LEGO floats initially because

air gets trapped in crevaces


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Boat that floats

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Have BalLAST

Construct a neutrally

buoyant submersible

Dive and resurface

Remain at constant depth Concepts

Buoyancy

Density

Air compression

Pneumatics

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Prop-line: Part 1 propulsion and drag

Build device to test

different sized

propellers

Concepts

Propulsion

Drag

Experimental design


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Prop-line: Part 1 propulsion and drag

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Prop-line: Part 2 gears

Now test how gearing

changes propulsion/speed

Concepts

Gears


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Prop-line: Part 2 gears






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Dizzying boat

Introduce concept of torque

Run an experiment

Test different propeller

distances Time boat rotations

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Slalom boat

Build a boat that navigates a slalom

course as quickly as possible

Concepts

Design

Propulsion

Buoyancy

Torque

Stability ROBOLAB?


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Final Design Project: Submersible

ROV/AUV Design and build a submersible LEGO ROV/AUV

Remotely operated vehicle/Autonomous underwater vehicle

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Turbidity sensor

DEMO


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Break


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Exercise: Construct activity

Select one of the underwater activities

Boat that floats (buoyancy and density)

Have a BalLAST (neutral buoyancy, density, and ballasts)

Prop-line (propulsion, drag, and friction) Prop-line contd (gears)

Dizzy boat (torque)

Slalom boat (engineering)

Construct the LEGO structure for DEMO

Develop 5-minute presentation of topics/concepts

and how to present them

Documents

Underwater Activities