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Hovercraft Project

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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Hovercraft Project

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  1. HovercraftProject Josh Alfaro Amanda Johnson Dustin Lee

  2. 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

  3. 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

  4. Team Leader: Josh Alfaro • Scribe: Amanda Johnson • Timekeeper: Dustin Lee Group Development

  5. Timeline

  6. 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

  7. Hovercrafts became known as active transport Systems • High-speed Service Over Water and Land, • Innovations for Military Vehicles • Today Used for Recreational Activities Background

  8. Mr. Pritchard • Mrs. Brandner Customer

  9. 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

  10. 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

  11. Assisting Teachers • Mrs. Bradner – Physics and Calculations • Mr. Cotie – Electronics • Mr. Pritchard – Hardware and Construction Project Scope

  12. 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

  13. Hovercraft • Final Report • Engineering Notebook • This PowerPoint Deliverables

  14. Information We Know • Specifications on Prototype • Project & Prototype Guidelines • Questions Requiring Research • Group Brainstorming • Various Topics • Calculations • Materials & Parts Brainstorming

  15. 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

  16. Basic Information • Brainstorming • Materials & Parts • Physics and Math Principles • Math Equations Research

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. 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

  23. Selecting an Approach

  24. Selecting an Approach

  25. Design Proposal: CAD Parts

  26. Design Proposal: CAD Parts

  27. Design Proposal: CAD Assembled

  28. Full Assembly

  29. Full Assembly

  30. Design Proposal: Bill of Materials

  31. Bill of Materials

  32. Styrofoam Brand Foam Block • Squirrel Cage Blowers • 9 Volt Battery • Hot Wire Cutter • PPK2 Weather Resistant Fabric • Fix-All Adhesive Design Proposal: Build Process

  33. Prototype

  34. Prototype

  35. Test Plans • Size Specifications • Time to Achieve Liftoff • Hovering Capability • Durability • Propulsion System Design Proposal: Test Plan

  36. 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

  37. 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

  38. 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

  39. Durability • Function • Aesthetic • Scale of 1-5 • Multiple Trials • Expected Results • Scale Value: 1 • Actual Results • Avg. Scale Value: 1 Design Proposal: Test Plan

  40. Propulsion System • Average Speed • Stopping Distance Design Proposal: Test Plan

  41. Speed • Distance: 10 ft • Time • Propulsion System • Calculations • Expected Results • 2.5 ft per second • Actual Results • 0.33156 Design Proposal: Test Plan

  42. 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

  43. Prototype Problems • Motor Burned Out • Receiver Malfunction • Controller Malfunction • Propulsion System Failed Prototype Problems

  44. Refined Design • Motor & Propeller System • New Propulsion Propeller • New Propulsion Motor • Fan Cage System • Gator Boat Idea Refinements

  45. Final Prototype

  46. Final Prototype

  47. Stronger Motor for Propulsion • Speed Control • Lighter Battery • Stronger Lift Room for Improvement

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