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Aerodynamic tesing of rear mounted automotive spoilers ( 8/25/2010 )

Aerodynamic tesing of rear mounted automotive spoilers ( 8/25/2010 ). Influence of slant angle on overall baseline drag. @ 40 deg, Cd =0.51 @ 30 deg, Cd =0.52 @ 20 deg, Cd =0.48 @ 10 deg, Cd =0.47 At 12.5 deg the flow starts to detach

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Aerodynamic tesing of rear mounted automotive spoilers ( 8/25/2010 )

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  1. Aerodynamic tesing of rear mounted automotive spoilers(8/25/2010)

  2. Influence of slant angle on overall baseline drag • @ 40 deg, Cd=0.51 • @ 30 deg, Cd=0.52 • @ 20 deg, Cd=0.48 • @ 10 deg, Cd=0.47 • At 12.5 deg the flow starts to detach • At 30 degree the vortices break up, Flow fully detaches

  3. 20 Degree Slant • At all spoiler positions on the slant face an increase in drag was found. • when spoiler is placed in the back face a 4% reduction was found

  4. Flow Visualization 30deg slant

  5. Scaled Model • 1:18 Scale of a Porshe Cayenne • Only about a foot long • 3d printer can make 8in x 8in x 12in part

  6. Thank You

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