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Engineering
Mechanical Engineering
Why do more cars now have a short "spoiler" above their rear window?
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[QUOTE=".Scott, post: 6869773, member: 489053"] The issue described in that article was primarily lift, not drag. From the article cited by [USER=15808]@DaveC426913[/USER] . Here's what that article says: You don't want your tail flying - you want traction. But it also includes drag information. I can't access the pdf, but I can access the graphics. This one shows the pressure map for different configurations: [ATTACH type="full"]324114[/ATTACH] So with no spoiler, you get significant pull (thus drag) on the rear window. Neutral spoiler (which appears to be what the cars are using) has no significant effect on lift, but cleans up a lot of drag. Attempting to eliminate lift (last image) creates more drag. [/QUOTE]
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Why do more cars now have a short "spoiler" above their rear window?
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