1. P – 12462 2011-1, 2011-2 TOW TANK FOR TETHERED HYDROFOIL TEAM MEMBERS: Hope Alm (ME)Tim Buckner (ME) William Lentlie (ME) Andres Santizo Matheu (ISE) Shauna Traxler(ME ) OBJECTIVE: The objective of the project was to build a small scaled version of tethered hydrofoil to compare with the model simulation provided by DR. Mario Gomes in MATLAB. Teams P12462 goal was to 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 flowing through the hydrofoil. Planning: Sept, 2011 Customer Needs, Eng. Specifications Concept Development: Sept, 2011 Brainstorm, Concept Evaluation and Selection System Level Review: Oct, 2011 Pool vs. Tank, Risk Analysis, System Architecture Detail Design Review: Nov, 2011 Bill of Materials, Feasibility Analysis Manufacturing: Dec, 2011 Mini-tank Jan, 2012 Full Scale Tow Tank (Tank) Testing: Feb, 2012 Functionality, System Interaction Final Product Delivery: Feb, 2012 PROJECT TIMELINE: FUTURE IMPROVEMENTS: 1) Place windows in the tank walls to allow in water visibility. 2) Upgrade the plywood panels (walls) to sheet metal panels or glass panels. 3) Upgrade the plastic liner to a more robust system. 4) Improve rail mounting to tank SELECTED DESIGN: 3/8 in (9.525 mm) thick, 2” (5.08 cm) Angle iron 1/4 in (6.350 mm) thick, 2” (5.08 cm) Angle iron 3/8 in (9.525 mm) thick Plywood 16 feet (4.8768 m) long 80/20 Aluminum 3/4 hp (559.27 w) Motor 1/16 in (1.5875 mm) diameter Aircraft Cable 6 in (15.24 cm) diameter Pulleys AutoCAD Drawing of Selected Design Picture of Actual Tow Tank SpecificationValue Size ≤19ft in length and 50in in width (5.79 m, 1.27m) Weight300 lbf/ft 2 (14,364 Pascal) System cost< $2500 Distance cart travels≤16ft (4.8768 m) Velocity of cart3.28 ft/s (1 m/s) Towing velocity variation0 - 3.28 ft/s (0 – 1m/s) Max sideways deflection of rail system1/32 in (0.7933 mm) Center of platform from edge of tank1 ≤ 8 in (2.54 ≤ 20.32 cm) Data sampling rates500 Hz Resolution of velocity data0.032 ± 0.164 ft/s Resolution of time data0.001 ± 0.01 s Test setup time (by user)< 30 min Can test different models and hydrofoil sets> 2 sets Compliance with accepted safety protocols and regulations In Compliance with All Standards Tank is Designed so model is not restricted in its motion Tank does not interfere with model Tank assembly does not damage its surroundingsTank causes no damage Training time (1st Time)< 60 min Engineer Specifications: Key Customer Needs: DescriptionImportanceHow is it being metStatus Tank must be able to tow a platform above the surface of a stationary body of water 9Motor speed controlled with driver Driver has different speed ranges Towing length needs to allow for steady state 9Tank inside length ≥ 16’ (4.8768 m) Platform must allow for bolting the hydrofoil away from the wall of the tank 9Cart has multiple attachment points Measurements should be of high quality 9Measurement devices should match specification Appropriate sampling rate and resolution 9Timed in LabVIEW Tank must be safe for Operator 9Ergonomics were considered for height of the tank Cable Management DescriptionImportanceHow is it being metStatus Tank must not damage the surrounding 9Plastic liner will prevent for water leaks Tank should not interfere with operation of models 9Communication of constrains with team P12463 Platform must be above water level 3Fill level of 18” (45.72 cm) The project has to be cost effective 3Cost meets budget Donated pieces of equipment Easy to use and train new users 3Provide user manual Team Picture