Final Design Presentation

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Final Design Presentation for the Hovercraft Project

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Final Design Presentation

  1. 1. Contents Goals Preliminary Design Shortcomings Final Design Details Construction Details Bill of Materials Product Performance Lessons Learned
  2. 2. Project GoalsCreate a working,autonomoushovercraft that cansuccessfullynavigate a coursewithout hitting wallsand overcoming thebutton obstacle atthe start of thetrack.
  3. 3. Preliminary DesignShortcomings Speed H-Bridge Controller Sensor Materials Placement
  4. 4. Hull Structure Mass Radius Length Width Height Area Parts Quantity Weight (N) (g) (cm) (cm) (cm) (cm) (cm^2) Top Plate 1 126.3 n/a 70 60 2.54 4200 1.24Bottom Plate 1 68.1 n/a 60 50 2.54 2995 0.67Support Bars 6 .04 n/a 1 1 3 1 negligibleBottom Plate 6 n/a 0.5 n/a n/a 2.54 0.79 n/a Holes
  5. 5. Hull Structure and Skirt
  6. 6. Center of Pressure.350m x .250m
  7. 7. Switch Actuation Stripped CD Drive H-Bridge Relay
  8. 8. Button Presser Circuit
  9. 9. LevitationDelta GFB0912SHG 92x92x50.8mm Ultra High Output 12V Case Fan Manufacturer Fan Tested Fan Curve CurveRequirement Flow rate1.324M3/min Pressure5.29mmH20
  10. 10. Levitation Circuit
  11. 11. Propulsion Propulsion Fan Levitation Fan Propulsion Fan Propulsion Button Pusher Battery Front Levitation Battery Back
  12. 12. Propulsion Requirements Thrust force greater than the Friction force of 1.69 N Fan SpecsGWS EDF55D Ducted Fan EDF 50A Ducted Fan with with Brushless 3900KV CN12-RLC Brushed Motor Combined Thrust=1.96N Motor Acceleration Forward= .15 m/s2 Angular= 1.26 rad/s2
  13. 13. Propulsion Circuit
  14. 14. Power14.8V Lithium-Ion 11.1VLithium-IonBattery with a 2.2 Battery with a 4.4 9V Battery for Amp Capacity Amp Capacity button-pushing and a 5 amp and a 5 Amp mechanism Maximum Maximum Discharge Rate. Discharge Rate.
  15. 15. Sensors and Actuators QTR-8RC Reflectance • Line Reading Sensor Array • Line Counting Sharp IR Sensor • Wall Distance GP2Y0A0 • Button Distance 2YK0F
  16. 16. Sensors Circuitry
  17. 17. Control Algorithm
  18. 18. Keeping Straight
  19. 19. Turning Before During
  20. 20. Returning Straight After
  21. 21. Building Process Button• Cut Deck Levitation • Assemble Presser • Test Pieces Fans Sensors• Glue Decks • Test Fans • Wire with Support • Test Fan • Attach • Strip CD Sensors Bars Servos • Attach Drive • Build• Create Skirt • Wire • Build H- Template • Wire Servos Sensor • Test Bridge Housing• Cut Fabric • Glue Fans • Attach• Sew Levitation to Servos • Attach • Wire Sensors• Attach Skirt • Wire Fans • Test • Test Button Propulsion Presser Sensors Propulsion Hull
  22. 22. Bill of MaterialsPart Model CostHull Structure (with skirt) 16.00Levitation Fan Delta GFB0912SHG Fan 9.99Propulsion Fans EDF55D with brushless motor and 51.73 EDF50A with brushed motorServos HRC31311S HS-311 Standard Servo 15.98Levitation Battery Li-Ion 18650 14.8V 2200 mAhm 37.99Propulsion Battery Li-Ion 18650 11.1V 4400 mAhm 56.62Button Pusher (with H- 14.66bridge and motor)Arduino 42.50Sensors QTR-8RC Reflectance Sensor Array + 34.95 Sharp GP2Y0A020F Distance SensorCircuitry 67.25Total 347.67
  23. 23. Gantt Chart
  24. 24. Performance Pressed the Button! Navigated the Course! Under Budget and On time! Did not place however.
  25. 25. Lessons Learned Leave plenty of time for parts to ship as companies don’t always deliver on time Chances are, something’s going to break. Buy extras if possible. Ensure that more than one team member is aware of every step.
  26. 26. Questions???
  27. 27. item Model craft $Photosensor Array QTR-8RC Reflectance Sensor Array 14.95Servo (2,0) HRC31311S HS-311 Standard Servo 15.98Wiringpc board Bill of MaterialsLevitation fan Delta GFB0912SHG Fan 9.99 1.99 25v relay (1) 2.995v relay (2) 4.69Glue Liquid Nails 3Infrared Sensor (2,0) Sharp GP2Y0A020F Analog Distance Sensor 20Foam 5Plywood 2Leviation Battery Pack Li-Ion 18650 14.8V 2200 mAhm Part No 31021 37.99Propulsion Battery Pack Li-Ion 18650 11.1V 4400 mAhm Part No 31016 56.62Heat Sink 1 Heatsink For TO-220 Ohmite Heatsinks 1.8Arduino 42.5Skirt 63 pin-jst wire (1,1) JST 3-pin - BARE 3Propulsion Fan and motor (back) EDF50 EDF-2030x3 Rotor (GW/EDF50A 11.73Transistor MOSFET Transistor 3.29 EDF55-300H with GWBLM005C GWS 2028-6Propulsion Fan and Motor (front) BRUSHLESS MOTOR 40CD Drive 5Heat Sink 2 2.99Speed controller 35Perfboard Kit 1.50H-Bridge 9.669 Volt Battery 8Total 347.67

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