[U]Aerodynamics Of Mirage
[/U][h=2]Aerodynamics of the new Mirage (0.27-0.31 drag coefficient varies with options)[/h][INDENT][IMG]http://mirageforum.com/forum/attachment.php?attachmentid=374&stc=1&d=1385312170[/IMG]
The Mirage / Space Star aerodynamic design is better than average for a small 4-door hatchback body. Mitsubishi lists drag coefficients (Cd) ranging from 0.27 to 0.31, depending on drivetrain and options, with the Japanese and Euro market trims having the lowest Cd:
Reduced aerodynamic resistance (an in-house-measured CD value of 0.27 (on G and M trim levels)) - Source: (PDF) Social and Environmental Report 2012 - MITSUBISHI MOTORS CORPORATION
That Cd contributes to the Mirage being the most fuel-efficient gasoline (non-hybrid) registered car in Japan.
Mitsu U.K. says:
The most advanced research has gone into the aerodynamics of the Mirage resulting in one the most aerodynamic vehicles in its class. The overall shape has been optimised to fine tune its drag coefficiency to just 0.27 and the sleek body, clam-shell bonnet and tapered roofline create the striking profile of a car engineered from the ground up for fuel economy and CO[SUB]2[/SUB] efficiency. (Source)
Notable aero design features (varies by model/options):
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[TD]Profile taper of the roofline down toward the rear[/TD]
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[TD]Drag-reducing "Kammback" type spoiler/roof extension (some models)[/TD]
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[TD]Partial lower grille block off (passive -- size of blocked area varies depending on which transmission is equipped: the CVT car has a larger opening than the manual transmission model)[/TD]
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[TD]Vestigal upper grille opening[/TD]
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[TD]Relatively smooth wheel covers (some models), and narrow width tires (165 mm). The 175 mm width tires with open spoke alloy wheels on some Mirages result in worse fuel consumption, partly for aerodynamic reasons.[/TD]
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[TD]Optimized rocker panel design (some models)[/TD]
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[TD]Sharp trailing edge/corner on the rear bumper[/TD]
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[TD]Front wheel spats/deflectors
(Also see thread: Aerodynamic wheel spats & Mirage)[/TD]
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[TD]Underbody smoothing panels[/TD]
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[TD]Rear track 15mm narrower than front (permits plan taper in the bodywork towards the rear)[/TD]
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Of course, reducing aero drag isn't just about improving fuel economy. It also results in a quieter cabin (less wind & engine noise) and more engine power in reserve at highway speeds (faster high speed acceleration).
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