TEAM 1: ON WINGS LIKE A PENGUIN

ENGINEERING 339 – SENIOR DESIGN

Team Members

Team 1: On Wings Like A Penguin

Phil Baah-Sackey, Joe Englin, Chris Lowell, Eu Sung Chung

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Presentation Outline• Problem Definition• Project Description• Design Norms• Important Resources• Engineering Analysis• Feasibility Study Results• Obstacles and Accomplishments• Questions

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Problem• There are some situations where

neither aquatic vehicles nor land vehicles can access certain locations

• In these situations an amphibious vehicle that travels above the surface could reach these locations

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• 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

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Design Norms• Humility – The project is not perfect• Integrity – Carefully crafted• Transparency – Easily

understandable and operable

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Important Resources• Professor Heun• Universal Hovercraft Homebuilders

Showcase• The Internet (Various Sites)• The Hekman Library• Brian, Friend of Dave Ryskamp

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Thrust Propeller Analysis• Determined propeller tip speed

would not exceed the speed of sound

• Calculated craft drag forces and determined required propeller pitch

• Calculated angle of attack along the propeller blade

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Propeller Analysis

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Propeller Angle of Attack

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Lift Fan Case Study• Designing a lift fan is an iterative

process• Investigated three other functioning

hovercrafts of similar size and weight

• Determined lift engine specifications• Obtained general idea of lift fan

dimensions

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Feasibility Study Results• Approximately 6.5 horsepower lift engine• Approximately 16 horsepower thrust

engine• 26 inch diameter lift fan• 42 inch diameter thrust propeller• Hull will be constructed of extruded

polystyrene foam and marine plywood

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Obstacles and Accomplishments

Obstacles• Sourcing low cost materials• Determining lift fan specifications• How much power?Accomplishments• Obtained free lawnmower engine• Ordered thrust engine• Begun sourcing other materials• Finished Autodesk model

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Budget Analysis

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Item Size Quantity Low Price High Price

Horizontal engine 16 HP 1 $325.00 $325.00Vertical engine 5.5 HP 1 $0.00 $0.00

XPS foam 2" x 4' x 8' 4 $69.16 $69.16Marine plywood 1/8" x 4' x 8' 4 $107.20 $107.20

Epoxy kit 1 gallon 2 $125.98 $125.98Fiberglass cloth (6 oz) 38" x 1 yd 8 $55.60 $73.52

Skirt (18 oz vinyl nylon) 60" x 1 yd 6 $59.70 $59.70Thrust propeller 1" x 6" x 8' 1 $12.86 $95.00

Lift fan 1" x 6" x 8' 2 $25.72 $99.95Metal components $0.00 $0.00

Wood $0.00 $0.00Contingency $150.00 $300.00

======== ========TOTALS $931.22 $1,255.51

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Questions?

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