AUVAUVHull Qualification TestingHull Qualification Testing

GoalsGoals

To prove the vehicle’s integrity from To prove the vehicle’s integrity from water intrusion when submerged.water intrusion when submerged.

To be able to open the vehicle’s To be able to open the vehicle’s access caps and re-assemble multiple access caps and re-assemble multiple times and still maintain water times and still maintain water tightness when re-submerged.tightness when re-submerged.

Test 1 Test 1

Torque access cap nuts to 15 ft-lbs.Torque access cap nuts to 15 ft-lbs.

Submerge vehicle in 4 feet of water for 15 Submerge vehicle in 4 feet of water for 15 minutes.minutes.

Remove from water, disassemble access caps.Remove from water, disassemble access caps.

Measure amount of liquid that entered the Measure amount of liquid that entered the vehicle to determine rate of intrusion.vehicle to determine rate of intrusion.

Repeat test 1 two more times, then increase Repeat test 1 two more times, then increase torque at 5 ft-lb increments for tests 2 and 3 torque at 5 ft-lb increments for tests 2 and 3 and repeat test 1 again.and repeat test 1 again.

Tests 2 & 3Tests 2 & 3

Repeat test 1 in 8 feet of water but Repeat test 1 in 8 feet of water but increase test time to 1 hour.increase test time to 1 hour.

Repeat test 1 in 12 feet of water also Repeat test 1 in 12 feet of water also increasing the test time to 1 hour. increasing the test time to 1 hour.

Vehicle Hull PrototypeVehicle Hull Prototype

Preliminary Test ResultsPreliminary Test Results

TimeTime DepthDepth TorqueTorque Measurement Measurement CollectedCollected

Water Water Intrusion RateIntrusion Rate

CommentsComments

15 15 MinutesMinutes

4 Feet4 Feet 15 ft-lbs15 ft-lbs 1.75 Liters1.75 Liters 7 L / Hr7 L / Hr No bubbles No bubbles observed for observed for

first 5 first 5 minutesminutes

Test 1 Date: 3/4/05 Location: SHAPE Time of Test: 2:00 – 2:15 PM

TimeTime DepthDepth TorqueTorque Measurement Measurement CollectedCollected

Water Water Intrusion RateIntrusion Rate

CommentsComments

15 15 MinutesMinutes

4 Feet4 Feet 20 ft-lbs20 ft-lbs 0 Liters0 Liters 0 L / Hr0 L / Hr No bubbles No bubbles observed observed

Test 2 Date: 3/4/05 Location: SHAPE Time of Test: 2:35 – 2:50 PM

Preliminary Test PhotosPreliminary Test Photos

Preliminary Test Photos Preliminary Test Photos

Any Questions? Any Questions?