Has anyone seen any websites that detail or have details on the aerodynamics of the DTM sedans when they were in their heyday? I'm really interested in their front end aerodynamic treatment - the ducting and ground effects etc.
DTM aerodynamics
Started by
NRoshier
, Sep 25 2009 12:30
4 replies to this topic
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#2
NRoshier
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Posted 25 September 2009 - 13:15
Actually let me broaden this to GT's as well. How have the front end aerodynamics changed in the past 15 years and why?
#3
Stefan_VTi
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Posted 25 September 2009 - 15:29
Not quite DTM, but the best study material on front end aero (in my opinion) is here: http://mulsannescorner.com/
#4
J. Edlund
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Posted 27 September 2009 - 22:12
The solutions for front end aero for DTM cars have today become more and more like those used for LMP cars, with the main differences being the use of a conventional hood, front placed radiators and a front engine.
Modern DTM cars use a space frame chassis with a carbon fibre survival cell so they are not limited to what the stock chassi can offer. The engine and the driver is placed quite far back in the car.
http://upload.wikime...A4-DTM_2008.JPG
http://lh3.ggpht.com...diA4DTM.005.jpg
http://www.racecar-e...04/1/0/dtm.html
Modern DTM cars use a space frame chassis with a carbon fibre survival cell so they are not limited to what the stock chassi can offer. The engine and the driver is placed quite far back in the car.
http://upload.wikime...A4-DTM_2008.JPG
http://lh3.ggpht.com...diA4DTM.005.jpg
http://www.racecar-e...04/1/0/dtm.html
#5
NRoshier
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- 506 posts
- Joined: September 06
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Posted 28 September 2009 - 10:18
Thank you for the replies. The planned sports sedan ( http://www.sportssed.../news/news.html ) will have a mid-front engine with No2 plug of a 4cyl engine virtually under the windscreen. The engine will use a short torque tube arrangement to a Hewland FTR transaxle and push-rod suspension at all four corners. Body is yet to be decided, but will be chosen for aero and availability reasons...it will be made in FG - I'm suggesting current 1/3 series BMW coupes. All up weight for under 2lt car planned to be 700kg-ish.
The rules dictate some limitations. Front of chassis will be raised to allow good front end downforce via splitter etc. Tunnels are banned and rear diffuser is limited...however aero is one area that has little attention given it until the car is virtually complete. We would prefer to include this at the start of the deliberations as is would give an advantage (if done correctly) that would not be easily addressed by the competition. A 1.2lt turbo engine is also under consideration, though the current engine is based on a 2lt lancia/fiat/alfa 16V engine of approximately 280bhp.
I fear the shutter idea, whilst not beyond the capabilities of control of the Motec EMS...would be deemed a moveable aerodynamic device.
The rules dictate some limitations. Front of chassis will be raised to allow good front end downforce via splitter etc. Tunnels are banned and rear diffuser is limited...however aero is one area that has little attention given it until the car is virtually complete. We would prefer to include this at the start of the deliberations as is would give an advantage (if done correctly) that would not be easily addressed by the competition. A 1.2lt turbo engine is also under consideration, though the current engine is based on a 2lt lancia/fiat/alfa 16V engine of approximately 280bhp.
I fear the shutter idea, whilst not beyond the capabilities of control of the Motec EMS...would be deemed a moveable aerodynamic device.
