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Old 10-14-2017, 01:25 PM   #316 (permalink)
aerohead
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Baby template car specifications

Here are the as-tested measurements for 'baby':
*Scale-approx. 36.68%
*Model weight-168-pounds (all three components)
*Length-97.5"
*Height-24.64"
*Body height-20.28"
*Width-28.375"
*Ground clearance-4.3"
*Front track-24.625"
*Rear track-18.25"
*L/H=3.957
*L/h=4.807
*L/W=3.436
*Diffuser-2.8-degrees
*Forebody-23.302"
*Aft-body-74.198" (long-tail)
*Aft-body-44.948" (short-tail)
*Stinger-29.25"

*Tire width-64mm
*Wheel fairings width-88mm
*Frontal projected area-3.4795 sq-feet
*Coefficient of Aerodynamic Drag (long-tail)-0.12099 (ave. 3-runs @ zero-yaw)
*Coefficient of Aerodynamic Drag (short-tail)-0.148 (ave. 2-runs @ zero-yaw)
*Drag index (CdA)-0.4209 sq-feet (long-tail)
*Drag index (CdA)-0.5149 sq-feet (short-tail)
*Reynolds number,approx.-1,634,402 at 76 mph airspeed
*Reynolds number,approx.-645,157 at 30 mph airspeed (smoke-flow imaging)
Comments:
*Wheel fairings could be narrower @ 1:1 scale
*Stinger was intentionally mutilated in order to provide for DOT taillights and license plate
*No facility for crosswind-averaged,SAE J1252/ J 2071,test protocol
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Last edited by aerohead; 10-14-2017 at 03:06 PM.. Reason: add data
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