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William Lentlie – Project Leader (ME) Tim Buckner – Lead Engineer (ME)

P-12462 Tow Tank for Tethered Hydrofoil. William Lentlie – Project Leader (ME) Tim Buckner – Lead Engineer (ME) Hope Alm – Mechanical Engineer Shauna Traxler – Mechanical Engineer Andres Santizo Matheu – Industrial Engineer . Faculty Guide: Ed Hanzlik Sponsors: Dr. Mario Gomes

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William Lentlie – Project Leader (ME) Tim Buckner – Lead Engineer (ME)

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  1. P-12462 Tow Tank for Tethered Hydrofoil William Lentlie – Project Leader (ME) Tim Buckner – Lead Engineer (ME) Hope Alm – Mechanical Engineer Shauna Traxler – Mechanical Engineer Andres SantizoMatheu – Industrial Engineer Faculty Guide: Ed Hanzlik Sponsors: Dr. Mario Gomes EPA P3

  2. Agenda • Project overview • System design • Actual design summary • Testing • Conclusions • Recommendations • Questions http://www.cityofsouthlake.com/waterconservation

  3. Objective • To build a small scaled version of tethered hydrofoil to compare with a simulation provided by Dr. Mario Gomes in MATLAB. • Create a tow tank capable of moving a platform at a constant specified speed over the top of a stationary body of water in order to recreate a river flow passing over a hydrofoil. http://emsolo.wordpress.com/category/college-life/

  4. Customer Needs

  5. Customer Needs

  6. Engineering Specs http://engineeringmyfuture.webs.com/

  7. Project Timeline

  8. Concept Generation Proposed concepts for the tank materials. • Wood structure and wood panels • Steel structure and wood panels • Steel structure and steel panels Proposed concepts for rails and cart • Angle iron rails and skate bearings • 80/20 linear motion system • Machined bottom supported rail

  9. Analysis • Forces applied • Hydrostatic Force at maximum height • Point load of 200 lbf(889.64 N) • Constraints • Deflection: 1/32” (7.94e-4 m) • Yield Stress: 50 ksi (345 Mpa)

  10. Final Design • 3/8 in (9.525 mm) thick, 2” SQ. (5.080 cm) Angle iron • 1/4 in (6.350 mm) thick, 2” SQ. (5.080 cm) Angle iron • 3/4 in (19.050 mm) thick Plywood • 16 feet (4.877 m) long 80/20 Aluminum • 3/4 hp (559.270 w) Motor • 1/16 in (1.588 mm) diameter Aircraft Cable • 6 in (15.240 cm) diameter Pulleys

  11. Final Product • Tanks dimensions: 16 feet (4.877 m) long, 2.5 feet (0.762 m) wide, and 2 feet (0.610 m) high. • Max cart towing velocity: 3.21 ± 0.10 ft/s (0.950 ± 0.025 m/s) • Max volume of water: 599 US gallons (2,265 L) • 2 modular pieces, capable of being disassembled, moved, and reassembled by 2 people

  12. Testing Techniques & Difficulties • Velocity Range • Distance Accuracy • Start Up Transients • Cable Wear

  13. Testing Results

  14. Budget Initial Budget: $2,000 Expanded Budget: $2,500 Final Expenses: $2,169.05 http://shannonpenrod.wordpress.com/2010/06/29/money-makes-the-world-go-around/

  15. Challenges • Waterproofing plywood • Liner management • Leak detection • Tow cable management • Safety

  16. Conclusions http://flowers.cdd5.com/showthread.php/amigo-semaforo/

  17. Future Upgrades 1) Upgrade the plastic liner to a more durable material. 2) Upgrade tow cable and/or drive pulley. 3) Place windows in the tank walls to allow in water visibility. 4) Upgrade the plywood panels (walls) to sheet metal panels or glass panels 5) Improve rail mounting to tank http://www.pondlineronline.co.uk/

  18. Acknowledgements • EPA P3 • Dr. Mario Gomes • Prof. Ed Hanzlik • Prof. John D. Wellin • Dr. Steven Day • Kelsey McConnaghy • Rob Kraynik • Jan Maneti • Dave Hathaway • FMS • Mahany Welding Supply

  19. Questions http://fhalosangeles.net/first-time-buyer-questions/

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