Vehicle Design SummitVehicle Design Summit SummaryAHPV OverviewWhat were the goals of the AHPVAHPV PerformanceAHPV PerformanceAHPV PerformanceThe potential uses of the AHPV4 Design OpportunitiesElectric Hub Motor Electric Hub Motor OverviewElectric Hub Motor GoalsElectric Hub Motor TeamsSolar Panel Integration OverviewSolar Panel Integration GoalsEgress, Ingress, and visibility Overview & GoalsEgress, Ingress, and Visibility GoalsThe Future of AHPVVehicle Design Summit The Assisted Human Powered VehicleVehicle Design Summit Summary • Developed 4 alternatively-powered practical vehicle designs with 200 mpg or more equivalence • AHPV - Assisted Human Powered Vehicle • Pulse - 1 person all electric commuter vehicle • Fuel Cell - 90% recyclable body and shell • Biofuels - ran on straight vegetable oil • Worked on emerging technologies, in concert with collaborators in industry and academiaAHPV Overview • One person commuter vehicle capable of full electric drive, full human drive, & everything between • Capable of sustaining 50 mph for >50 miles on one charge • Can both plug in to the grid and charge off of solar power • Substantial autonomous range • 500 mpg equivalency @ 35 mph • Safe to drive: visible, good field of view, and crash worthy • Enough storage space for the typical commuter • Must be usable by the 95th percentile humanWhat were the goals of the AHPV • Breaks new ground in assisted human power: • High sustained speed and a useful range • Capable of making the typical commute autonomously • Generates excitement about alternatives • Demonstrates what college students can do to address major global challengesAHPV PerformanceAHPV PerformanceAHPV PerformanceThe potential uses of the AHPV • Commuting / energy conscious personal transportation • Exercise / recreation • Helps to create awareness and stimulate interest energy efficient alternatives • Use in Developing countries4 Design Opportunities • Solar panel integration • Electric Hub Motor Design • Electric Motor Mechanical Integration • Door and WindshieldElectric Hub Motor Design + BuildElectric Hub Motor Overview • Used frequently in electric bicycles, solar racers, etc • No Gearing, integrated directly into the wheel hub • Extremely High efficiencies (up to 98%) • Limited production volumes in high power ranges (> 2kW) • Expensive (e.g. the NGM motor on the AHPV costs > $8000)Electric Hub Motor Goals • Design and build a 10kW, 90% efficient Electric Hub Motor that can integrate with AHPV • Cost and manufacturing simplicity are key • Interface with standard NGM EV-C200 Motor Controller • Could be the first generation of a motor used in VDS 2.0 (full size production-ready concept vehicle)Electric Hub Motor Teams • Team 1 - Electrical components • Rotor, stator, windings, etc • Responsible for the electrical components • Team 2 - Mechanical integration • Building a housing for the electrical components • Integration with AHPV drivetrainSolar Panel Integration Overview • Solar power is a nice concept for vehicle energy, but cannot dynamically meet vehicles power needs • However, most cars spend 90+% of each day sitting still. • The AHPV solution: solar panels to recharge the battery while the vehicle is sitting outside all day in a parking lot, driveway, etc. This allows the solar panels to “catch up” with the AHPV’s energy needs.Solar Panel Integration Goals • Design a system that allows the solar panels to be deployed to face the sun when the AHPV is stationary • Must be hand deployable by one person in 30 seconds or less • Solar panels cannot be bend. The rear of the AHPV has a flat surface for storing the panels during motionEgress, Ingress, and visibility Overview & Goals • The AHPV drives...but there are two main issues • Getting in and out of the vehicle is extremely difficult - there is no door • Visibility is limited for the driver due to small windshieldEgress, Ingress, and Visibility Goals • Design a system of entry and exit for the passenger that allows the passenger to be seated in 10 seconds or less • Note here that there are very few hard mounting points suitable for doors in the front end of the AHPV. • Is likely to require unusual door configurations • Re-design windshield for better visibilityThe Future of AHPV • February - SolidWorks World (New Orleans) • April - Compete in Shell Eco-Marathon (France) • Summer - Museum of Science