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Design and Implementation of a Single-Manned Hovercraft

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Presentation on theme: "Design and Implementation of a Single-Manned Hovercraft"— Presentation transcript:

1 Design and Implementation of a Single-Manned Hovercraft
Caitlin Del Zotto Keith Gooberman Matthew Mayerhofer Noah Weichselbaum Senior Project Advisor: Professor William Keat

2 Presentation Outline Hovercraft background Design objective
Design requirements Safety requirements Alternative design concepts Final concept design summary

3 Hovercraft Background
First invented in 1956-Christopher Cockerell Vehicle supported by a cushion of air Can travel over any surface More efficient than boats Less drag, lower HP, higher efficiency

4 Hovercraft Background
Recreational Uses Cruising, Fishing Family, Diving Transportation, Hunting Commercial Uses Patrol Ice – Flood Rescue Airport Rescue Military Over Water Tours Water Taxi Ferry Service River Rescue Ice Breaking Conservation Farming Camera Craft Ice Fishing Fishing Tours Transport

5 Design Objectives and Design Requirements
Hovercraft must be able to transport one individual Must ride on cushion of air Needs to be able to travel over grass, concrete, dirt, ice/snow, and water Goal is to defeat Ian Keat through obstacle course designed by William Keat

6 Safety Requirements Must be build to prevent rollover No sharp edges
Driver must wear helmet and earplugs Kill switch must be installed Must be able to float Needs to be able to stop relatively quickly Driver needs some type of seatbelt

7 Alternative Design Concepts
LIFT AND THRUST CONCEPTS Splitter System vs. Two Single Systems Cost/Benefit SKIRT Bag, Finger or Jupe

8 Alternative Design Concepts
STEERING Rotating Fan vs. Rudders Cost/Benefit LIFT AIRFLOW Ducted Hull vs. Free Flow

9 Final Design

10 Detailed Design

11 Detailed Design (continued)

12 Stress/Deformation Analysis
Loads: Lift motor – 57lbs Lift fan -4lbs Thrust motor – 87lbs Thrust fan - 8lbs Person – 200lbs

13 Stress Analysis – lift fan fixed

14 Stress Analysis – person fixed

15 Calculations Hull Hover Pressure:
*Many preliminary calculations we made using an online calculator:

16 Calculations Simulation data from: Inputs: Hull Width (5’)
CALCULATION STAGE 1 – Lift requirements Air Gap(in) 0.5 1 1.5 2 Lift Perimter (ft) 27 Hover Gap (ft²) 1.13 2.25 3.38 4.5 Cushion Area (ft²) 45 Cushion Pressure (lbs/in²) 0.123 Cushion Pressure (atm) 0.0084 Air Velocity (ft/sec) 73.8 Lift Air Volume (CFM) 4981 9960 14940 19920 Lift Air Volume (CFS) 83.02 166 249 332 Engine HP 4.46 8.91 13.36 17.81 Fan Diameter (in) 19.58 27.69 33.91 39.16 Simulation data from: Inputs: Hull Width (5’) Hull Length (10’) Gross Weight (800lbs) Hover Height (air gap) CALCULATION STAGE 2 - Lift Fan Engine RPM 3060 # of Blades 5 Blade width [mid] 8.73 6.19 5.05 4.38 Blade Width [base] 11.36 8.03 6.56 5.69 Blade Width [tip] 5.25 3.70 3.03 2.63 Tip Speed (ft/sec) 261.4 369.7 452.7 522.7

17 Budget Total Hovercraft Budget 2605.00 Lift Engine 400.00
Thrust Engine Lift Fan Thrust Fan Skirt Build Your Own HoverTrek Video 4 Sheets of 1/8” Plywood Skirt Glue/Screws Steering Cable Fiberglass Hull Material Total Hovercraft Budget

18 Summary

19 Winter Term

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