ROV R emotely O perated V ehicle Unoccupied remote controlled submersible vehicle Used in deep and shallow underwater applications What parts does an ROV have BodyChassis Umbilical ID: 694417
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Slide1
The ROV ChallengeSlide2
What is an ROV?
ROV =
R
emotely
OperatedVehicleUnoccupied, remote controlled submersible vehicleUsed in deep and shallow underwater applicationsSlide3
What parts does an ROV have?
Body/Chassis
Umbilical
Carries
power, control signals, video feeds, and data.Arms/manipulatorsNavigation EquipmentSonarCamerasLightsSample Collection systems
Umbilical
Control box
ROV
BatterySlide4
Our Arctic is Opening Up
The Arctic is facing major challenges as the ice melts
More shipping and oil and gas exploration are happening
An oil spill in the arctic would be a huge disaster
Many plants and animals would be harmedhttp://www.protect-the-arctic.com/Slide5
What is it like in the Arctic?
Remote
Dark
Extreme weather
Shallow waterIce covered waterIce can be unpredictableFreezing conditionshttp://coastguard.dodlive.mil/2010/
http://www.polarfield.com/blog
http://www.arcticscience.org/whyStudy.phpSlide6
Oil Exploration
During a recent exploratory oil drilling mission the Black Gold Oil Company (BGOC) successfully located an offshore, ice-covered oil reserve and started extracting.
Then…
A magnitude 5.5 earthquake struck and part of the pumping equipment separated under the ice.Slide7
BGOC has contracted your company to build an
ROV
Perform a scouting mission to search for pools of oil trapped under the ice
Take a sample from a pool of oil under the ice
Return the sample to an analyzing stationTransport a piece of surface equipment Respond to the open water spill in the polynya and remove oil from the surfaceSlide8
Materials
Structure-
A variety of PVC joints and lengths of pipe (3, 4, 6, & 12 inch).
Zip Ties and
Electrical Tape for attaching motors, floats, and ballast. Motor Unit- Includes a control box, umbilical cable, and 3 bilge pump motors.Shears for cutting floats, zip ties, and tape. DO NOT cut your PVC Pipe!Slide9
MaterialsSlide10
The Challenges
Task 1
– Perform scouting mission to search for pools of oil trapped under the ice.
Drive ROV back and forth 20 feet out and back.
Task 2 – Take a sample from a pool of oil in the ice.Surface ROV inside a large floating ring and hold position for 5 seconds.Task 3 – Return sample and have it analyzed.Position ROV in front of an underwater square Hold position for 5 seconds Slide11
The Challenges
Task 4
–
Transport floating
equipmentEngage a beach ball floating in the poolReturn the beach ball to the side of the poolTask 5 – Respond to a surface oil patch in a polynyaUse ROV to gather floating ping pong balls and return to poolsideTask 6 – Deliver equipment to an underwater work
station
Fly ROV back and forth through a large stationary underwater ring
Pick
up a small underwater ring.
Deposit the small ring on a piece of anchored PVC pipe
.Slide12
Challenge DiagramSlide13
Operation
You will be by the pool –
you are not to go in the pool!
Keep batteries away from water
Do not drop control box in water The ROV Operator holds the control box while the Tether Manager controls the tether.The Operator will pass the control box to the Tether Manager when his/her turn is up. The next person in line becomes the Tether Manager.Slide14Slide15
Teamwork Points
All team members participate in design, build, and break down ROV.
All team members drive ROV during challenge.
Team members give each other positive encouragement.
Team members observe and obey all safety rules.Slide16
Possible Demerits
Team member bickers, argues, or acts with disrespect.
Pool-side structural modification after challenges have begun.
Team pulls tether to move ROV.
Use of pool “seal” after challenges have begun.Slide17
Structure
Think of what the ROV must do to accomplish the tasks
Bigger ≠ Better
Distribute weight evenly
http://farm3.static.flickr.com/2179/1519760291_a9bcb213a6.jpg?v=0Slide18
Purpose
What are the specific tasks of the challenge?
Where in the water column does your ROV need to operate (at the surface or down in the water?
What shapes/attachments/tools does your ROV need to accomplish the tasks?
Collect and retrieve objects floating at the surface.Collect a small ring and deposit it on an arm.
‘Fly’ through large rings suspended underwater.Slide19Slide20
Motor Placement
Attach motors with zip ties
The propellers should not be able to hit a wall or floor
Motors must be underwater when the ROV is at the surface
Up/down motor is best placed as close to the center of the ROV as possibleSide motors can be placed at front, middle or back of ROV Test motors so you know which way they spin before attaching them to the frameSlide21Slide22
Up/down motor is best placed as close to the center of the ROV as possible.
Side motors can be placed at front, middle or back of ROV.
Test motors so you know which way they spin before attaching them to the frame.Slide23
Buoyancy
Attach floatation with zip ties
The top of the ROV should float level just at the surface
Think of where your weight is
You want floatation over the weightBalance floatation so ROV doesn’t tilt side to side or point up/downYou can attach ballast (additional weight) if neededSlide24Slide25
ROV
Let’s Build an ROV!
Ballast
Float
Float
Motors
Control BoxSlide26
REMEMBER!
DO NOT…
Share or modify parts of your kit.
Go
in the pool.Get batteries or control box wet.DO…Show good sportsmanship.Learn something.Have fun!