I dont really understand either but as I know it GE is removing air from under the car. DDD also does the same?
If GE is banned why is a DDD design not?
Thanks
DDDs have as much to do with ground effect as single diffusors. Double deck diffusors are just diffusors with extended geometry beyond what was initially perceived to be allowed by the 2009 F1 tech rules. All they do is increase downforce compared with what is available to a common 175 mm diffusor.djones wrote:I dont really understand either but as I know it GE is removing air from under the car. DDD also does the same?
If GE is banned why is a DDD design not?
Thanks
To give a very short explanation: An aero foil in free air provides (lift/down)force against air. If you replace some of the air with a solid surface the delivery of the force is helped.Ground effect
Another common phenomenon that is misunderstood is that of ground effect. That is the increased efficiency of a wing when flying within a wing length of the ground. A low-wing airplane will experience a reduction in drag by 50% just before it touches down. There is a great deal of confusion about ground effect. Many pilots (and the FAA VFR Exam-O-Gram No. 47) mistakenly believe that ground effect is the result of air being compressed between the wing and the ground.
To understand ground effect it is necessary to have an understanding of upwash. For the pressures involved in low speed flight, air is considered to be non-compressible. When the air is accelerated over the top of the wing and down, it must be replaced. So some air must shift around the wing (below and forward, and then up) to compensate, similar to the flow of water around a canoe paddle when rowing. This is the cause of upwash.
As stated earlier, upwash is accelerating air in the wrong direction for lift. Thus a greater amount of downwash is necessary to compensate for the upwash as well as to provide the necessary lift. Thus more work is done and more power required. Near the ground the upwash is reduced because the ground inhibits the circulation of the air under the wing. So less downwash is necessary to provide the lift. The angle of attack is reduced and so is the induced power, making the wing more efficient.
It's an internet forum, not some sort of wiki.xpensive wrote:What do you know, another thread on DDD's, just what the doctor ordered I guess?
Ciro, for crying out loud?!
You have no grounds for any sort of argument, so resort to swearing. Well done =D>xpensive wrote:Removed post