2017 Baja SAE Competition

Transcription

1 2017 Baja SAE Competition

2 Meet the Team Enrique DeLeon Manjula Hodekar Keith Hernandez Mechanical Lead Public Relations Design Lead Logistics Team Lead Project Management Instructor: Dr. Raresh Pascali UH Professor Alumni Advisor: Sean VanVactor UH MET Graduate Undergraduate Colleague: Joshua Contreras UH Industrial Design Faculty Advisor: Marcus Gamino UH Instructor 2

3 Outline Objective Deliverables History & Events Major Components Project Management Comments & Questions 3

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5 Objective To design and build a vehicle that meets the rules and regulations of the 2017 Baja SAE competition and participate in the competition that will take place in Pittsburg, Kansas on May 25-28,

6 Deliverables Register for the 2017 Baja Competition in Pittsburg, Kansas by the November 14, 2016 deadline Have a Baja vehicle that is mechanically complete with a functioning suspension assembled by December 2016 Manufacture carbon fiber uprights for the suspension Achieve a vehicle weight under 400 lbs. Pass the Baja SAE inspection for the competition Achieve a top speed of 30 mph on a flat surface Design a vehicle that can achieve a flat jump of 7 ft. Implement instrumentation that is capable of data acquisition 6

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8 History Baja SAE History First competition 1976 University of South Carolina Under the direction of Dr. John F. Stevens Number of teams in first competition 10 Average number of students per team 9 Number of teams in Baja SAE International South America, Africa, Asia Popular countries Brazil, South Africa, India 8

9 9 Dynamic Events Acceleration Vehicle has two attempts during this event and is tested on a flat surface for 100 ft. Land Maneuverability Vehicle attempts to go through bumps, sand, rocks, logs etc. Hill Climb/Rock Climb Vehicle should reach destination point without stopping Traction Event Vehicle attempts to climb an incline surface or pull an object on a flat surface Endurance Vehicle attempts to operate continuously for a total of 4 hours

10 Static Events Design Event Teams are graded on design analysis, testing, development, and manufacturability Cost Event Teams must provide supporting documents to verify the cost calculations for proposed model and the actual cost of the particular prototype model Sales Presentation Objective of the presentation is to convince a hypothetical company to purchase the team s Baja SAE vehicle design and put it into production Note: there are about 4000 units manufactured every year 10

11 Main Events Scoring Dynamic 700 Points Acceleration 75 Land Maneuverability 75 Hill Climb/Rock Climb 75 Suspension & Traction 75 Endurance Race 400 Static 300 Points Design 150 Cost 100 Presentation Michiganbajaracing/photos 11

12 Winning Teams University Univ. of Michigan Cornell University Cornell University Team Michigan Baja Racing Big Red Racing Big Red Racing Dynamic / / /700 Static / / /300 Overall score / / /

13 Winning Strategy Continuous vehicle improvement from previous competition University/college funded vehicle Vehicle weight less than 400 lbs. Ultra high molecular weight polyethylene material for the body Light weight hammock seat Composite material for the flooring Maximum points in static event Speed & RPM sensors LCD display systems Driver communication systems motorsportjunction.com 13

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15 Frame - Design Function Series of tubes connected together to form a coherent structure Provides a rigid connection between the front and rear suspension Creates structural support for other necessary systems Provides protection for the driver 15

16 Frame - Design In order to meet our deliverable by December 2016 we will use the frame that was designed and fabricated by the Baja Brigade senior design team The team will reconsider the material and design in the second semester and modify it accordingly Advantages of spaceframe design Inherent structural properties Easier to fabricate Easier to modify 16

17 Frame - Fabrication Original frame was only tack welded Completed welding on frame members Arc Welder - E6013 Welding Electrodes Prepared frame to apply primer paint coat 17

18 Frame Possible Material Reselection Material Density (lbs./in 3 ) Tensile Strength (psi) Modulus of Elasticity (ksi) Workability (1 low-10 high) AISI 1018 Steel ,800 29,000 7 AISI 4130 Chromoly ,200 29, Aluminum ,000 10, es/steel_images2.jpg /Seamless-mechanical-tubing.jpg aluminum-tubes.jpg 18

19 Frame Design Requirements Load Restrictions Weight: Minimum requirement to carry a driver weighing 250 lbs. Height: Minimum requirement to fit a driver that is 75 in. tall Vehicle Dimension Restrictions Width: Max of 64 in. at the widest point Length: Max of 108 in. 19

20 Suspension - Basics Camber The angle of the wheel relative to the road Caster The angular displacement of the steering axis from the vertical axis of the wheel Toe The symmetric angle that a wheel makes with the longitudinal axis of the vehicle 20

21 Suspension - Linkage Double Wishbone Equal A-arm Setup Multilink Unequal A-arm Setup Trailing Arm 21

22 Transmission Automatic Transmission (CVT) Good for acceleration Fit for all terrains More complex and heavier More challenging to tune ATVRiders.com Manual Transmission Lightweight Cheaper than a CVT transmission Torque and speed are restricted on gear shifting 22

23 Engine All teams in the competition have to use the same engine Briggs & Stratton Model 19 Horsepower: 10 HP Engine displacement: 305 cc Bore: 3.12 in Stroke: in Compression ratio: 8.0 to 1 23

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25 Budget Component: Cost: Chassis $1,000 Suspension* $2,000 Steering $650 Engine $250 Drivetrain $1,000 Brakes $400 Tires and rims $900 Seat $60 Safety equipment $300 Instrumentation/electrical $350 Registration fees* $1,250 Travel & lodging* $1,500 Total: $9,660 Contingency 20%: $1,932 Total with contingency: $11,592 Mitigation: Suspension - Use available donated parts Registration Fees Make fundraising a The highest costs for the entire project weekly focus throughout the semester includes the suspension, registration fees Travel & Lodging - Use our own and the travel expenses for the 2017 Baja vehicle/trailer to reduce the cost of travel SAE competition in Kansas and check routinely for deals on lodging 25

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27 Timeline Completed In progress Not started 27

28 Baja Vehicle Research Design 1 Fabrication 1 Design 2 Fabrication 2 Testing Rules/safety requirements Frame design Frame fabrication Braking Braking Mechanical Major components Suspension design Suspension fabrication Steering Steering Electrical Materials Design analysis Powertrain Powertrain Instrumentation Completed Cost analysis In progress Not started Instrumentation Instrumentation 28

29 Probability Risk Matrix Severity 29 Risk Mitigation 1 Funding Continue talking to potential sponsors and use donated parts 2 Manufacturing Recruit industry help 3 Fabrication Recruit experienced welder 4 Time Management Hold weekly meetings and track time sheets 5 Meeting SAE requirements Consult with previous teams and review rulebook

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