TEAM 1: ON WINGS LIKE A PENGUIN ENGINEERING 339 – SENIOR DESIGN

Build an amphibious air cushion vehicle Should seat two passengers Two engines: one for thrust, another for lift. Approximately 12 x 6 ft, triangular shape Lift engine will duct air into skirt using air splitters Project Description

Design Requirements Approximately 6.5 horsepower lift engine Approximately 13 horsepower thrust engine 26 inch diameter lift fan 48 inch diameter thrust propeller Hull will be constructed of extruded polystyrene foam and marine plywood Fiberglass coating on outer hull and ducts Cable-controlled throttle Be able to support 400 pound payload

Budget Analysis COST ESTIMATION - bold signifies a verified price ItemSizeQuantityLow PriceHigh Price Horizontal engine13 HP1$300.00$ Vertical engine6.5 HP1$0.00$ XPS foam2" x 4' x 8'6$103.74$ XPS foam1" x 4' x 8'1$9.88$15.72 Marine plywood1/8" x 4' x 8'6$160.80$ Epoxy kit1.0 gallons2$175.98$ Fiberglass cloth (6 oz)38" x 1 yd10$50.00$91.90 Skirt (18 oz vinyl nylon)60" x 1 yd8$79.60$ Skirt screws3/4"300$8.95$12.95 Skirt glue HH-661 pint1$14.95$16.95 Spray can foam12 oz4$22.40$23.40 Thrust propeller48" - 17°1$38.58$ Lift fan26" - 16°1$25.72$ Other materials N/A$250.00$ TOTALS $ $

Schedule SeptemberOctoberNovemberDecember WEEK Form team Determine project Initial project research Project objectives defined PPFS Outline - Table of Contents Oral presentation In-depth design analysis Project website and sign Material sourcing and cost estimation Project brief Determine final specifications Complete Autodesk model Finalize budget Draft PPFS Oral presentation Final PPFS

Current Phase Defining budget (with contingencies) Sourcing materials Determining thrust propeller and lift fan specifications Working on Autodesk model

Questions?

Lift Fan Design 26 in. fan diameter Four blade design Constructed out of three 1 in. thick pine boards Blades with varied “angle of attack” for maximum efficiency

Lift Fan Angle of Attack

Thrust Propeller Design 48 in. propeller diameter Two blade design Constructed out of five 1 in. thick pine boards Blades with varied “angle of attack” for maximum efficiency Analyzed to confirm ideal operation

Propeller Analysis

Propeller Angle of Attack

Craft Balance Issues Center of gravity will be determined using Autodesk Inventor Components will be placed strategically to balance craft Weights will be added for static balance if necessary

Duct Construction Thrust duct will be constructed by cutting polystyrene sheets at a large radius Duct will then be wrapped and glued into final shape, and sanded Lift duct will be built into hull, using marine plywood