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Hovercraft Project. Josh Alfaro Amanda Johnson Dustin Lee. Problem Statement Group Development Timeline Background Customer Deliverables Brainstorming Research Criteria and Constraints Explore Possibilities Select an Approach Design Proposal Prototype Refinements
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HovercraftProject Josh Alfaro Amanda Johnson Dustin Lee
Problem Statement • Group Development • Timeline • Background • Customer • Deliverables • Brainstorming • Research • Criteria and Constraints • Explore Possibilities • Select an Approach • Design Proposal • Prototype • Refinements • Final Prototype • Room for Improvement • Conclusion Table of Contents
As high school students we would like to work on a project that will enhance or understanding of the scientific principles involved in using airflow to both lift an object off the ground and direct its path of travel. Problem Statement
Team Leader: Josh Alfaro • Scribe: Amanda Johnson • Timekeeper: Dustin Lee Group Development
Hovercraft • Air-cushioned Vehicle that can Travel Over Surface Horizontally. • 1956- First Hovercraft Invented by Christopher Cockerell • Norman B. McCreary Designed the “Skirt”. • “Skirt” design is to focus the air to lift vehicle. • Air fills the skirt to lift • June 11, 1959 SR.N1 Completed First Hover • July 25, 1959 SR.N1 Crossed the English Channel Background
Hovercrafts became known as active transport Systems • High-speed Service Over Water and Land, • Innovations for Military Vehicles • Today Used for Recreational Activities Background
Mr. Pritchard • Mrs. Brandner Customer
Works To Be Completed • Research on Principles in the Construction • Construct a Prototype. • Vehicle Can Hover Over the Ground • Controlled by a Remote. • Powered by Batteries • Size Specifications • Final Report • Engineering Notebook • PowerPoint Presentation Project Scope
Necessary Resources • Purchase of Various Materials • Hardware Store or Parts Specialist Knowledge. • Necessary Materials for Hovercraft Function • Research Various Topics on the Hovercraft • Estimated Project Cost: $125.00 Project Scope
Assisting Teachers • Mrs. Bradner – Physics and Calculations • Mr. Cotie – Electronics • Mr. Pritchard – Hardware and Construction Project Scope
Scope Limitations • Personnel Limitations • Expert Advice • Supplies or Material Limitations • Cost Effective & Efficient Materials • Proper Tool and Function • Schedule Limitations • Individual Schedules and Commitments Project Scope
Hovercraft • Final Report • Engineering Notebook • This PowerPoint Deliverables
Information We Know • Specifications on Prototype • Project & Prototype Guidelines • Questions Requiring Research • Group Brainstorming • Various Topics • Calculations • Materials & Parts Brainstorming
Base • Light Weight • Strong Enough to Support Parts • Fabric • Used for Skirt • Has to Trap Air • Provides Air Cushion • The Radio Transmitter and Receiver • Components Control Speed, Lift, and Direction • DC Batteries Power Motors & Fans Brainstorming
Basic Information • Brainstorming • Materials & Parts • Physics and Math Principles • Math Equations Research
In order to successfully complete this hovercraft project there are a few criteria and constraints that have to be met. • Must be No Bigger than 8.5’’ by 11’’ • Take at least 100 Hours to Complete • Must be Able to Hover Criteria and Constraints
Must be Able to Make Gradual Turns • Must be Controlled by a Remote Controller • Must Incorporate Math and Science Principles • Must Complete all Documentation • Year Long Journal • Technical Report • Final Presentation Criteria and Constraints
Solution 1 • Pros • Batteries act as a counter weight to the propulsion fan • Limited use of fans • Cons • Not to scale • The weight of the motors and fans may not be equal causing it to be unbalanced • Not enough information for the fan propelling the hovercraft Exploring Possibilities
Solution 2 • Pros • Enough propulsion to lift the craft • Evenly balanced • Rudder system as a turning mechanism • Square shape for easy balancing • Cons • Too many fans • No motor for the propulsion fan • Inadequate labeling of parts Exploring Possibilities
Solution 3 • Pros • Good placement of lift fans, battery, and motor • Skirt is shown • Rudder system is shown • Cons • Too wide of a body • Too heavy at the back of the craft • Wasted materials Explore Possibilities
Solution 4 • Pros • Two propulsion fans • Efficient use of fans and motors • Cons • Too thick of a body • Too heavy of a design • Batteries are only on one side causing the craft to tilt Explore Possibilities
Styrofoam Brand Foam Block • Squirrel Cage Blowers • 9 Volt Battery • Hot Wire Cutter • PPK2 Weather Resistant Fabric • Fix-All Adhesive Design Proposal: Build Process
Test Plans • Size Specifications • Time to Achieve Liftoff • Hovering Capability • Durability • Propulsion System Design Proposal: Test Plan
Vehicle Specifications • Vehicle Size • Multiple Testers • Hovercraft Board • Data Table • Expected Results • 8.5” x 11” x 2” • Actual Results • 8.5” x 11” x 2” Design Proposal: Test Plan
Hovering Capability • Weight • Liftoff Ability • Hovering Ability • Constant Power • Consistent Results • Expected Results • 1 Inch Off Ground • Actual Results • 1.3956” Off Ground Design Proposal: Test Plan
Time to Achieve Liftoff • Hovercraft with all Parts • Weight of Vehicle • Electric Power Needed • Consistent Results • Expected Results • 3 Seconds • Actual Results • 5.76 seconds Design Proposal: Test Plan
Durability • Function • Aesthetic • Scale of 1-5 • Multiple Trials • Expected Results • Scale Value: 1 • Actual Results • Avg. Scale Value: 1 Design Proposal: Test Plan
Propulsion System • Average Speed • Stopping Distance Design Proposal: Test Plan
Speed • Distance: 10 ft • Time • Propulsion System • Calculations • Expected Results • 2.5 ft per second • Actual Results • 0.33156 Design Proposal: Test Plan
Stopping Distance • Propulsion • Maximum speed • Run on a Course • Cut Power • Measurements • Data Collection • Expected Results • 12” Stopping Distance • 4 Second Stopping Time • Actual Results • 14.8 • 4.2 Design Proposal: Test Plan
Prototype Problems • Motor Burned Out • Receiver Malfunction • Controller Malfunction • Propulsion System Failed Prototype Problems
Refined Design • Motor & Propeller System • New Propulsion Propeller • New Propulsion Motor • Fan Cage System • Gator Boat Idea Refinements
Stronger Motor for Propulsion • Speed Control • Lighter Battery • Stronger Lift Room for Improvement