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Group Design Problem Chapter 2 - Vehicle Design For this exercise, you are to design a vehicle by selecting dimensions, engine size, etc. You will need to make a number of assumptions, and typical road tests are provided to help you in this regard. Use the following vehicle attributes Vehicle weight (lb): 3,500 pounds Engine power: 325 HP Engine torque: 300 ft-lb Rear wheel drive Wheelbase: 102 inches Location of center of gravity: 18 high, 3.3 feet behind front axle e . Total frontal area: 22 ft Passenger capacity: 5 Drivers eye height: 40 inches Overall gear reduction ratio: 4.25:1 Approximate 0 60 mi/h time: 6.2 seconds . Based on the values above, compute the following 1. Optimal brake-force proportioning (front and rear) on good, wet pavement at 70 mi/h 2. Maximum acceleration from rest on good, dry pavement. 3. Theoretical stopping distance (exclude perception/reaction time) without antilock brakes from 70 mi/h on good, dry pavement (assume a brake efficiency of 80 percent and ignore acrodynamic resistance) 4. Theoretical stopping distance with antilock brakes (ABS) from 70 mi/h on good, dry pavement (assume appropriate brake efficiency for ABS and ignore aerodynamic resistance). Include a sketch of your vehicle 5.
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