Quote:
Originally Posted by freebeard
I'm skeptical about the double-layering. It will make the hood twice as heavy. Passing air through the middle would have so much interference drag there would be no appreciable airflow.
For a duct to have any chance at success it should be short, un-convoluted and filleted. Here's an example on a Ferarri that addresses that area of the car. The double walled section is short, but there is structure along the hood edge and across the doors to make it work. |
The hood would be heavier, yes, but I don't think it would be double the weight. Even then, once you're at speed that doesn't make as much of a difference.
I started to also think about the reason hood extractors just behind the radiator work, and I agree that the double layer would probably not be helpful in this aspect. Perhaps removing the stock hood and replacing with this shape, sealing the rear (so the high pressure doesn't push air back into the engine bay) and venting the engine bay over the rear corners (where the fenders are, also a lower pressure zone) would help?
Do you think that by raising the trailing edge and reducing the extremity of the angle at the windshield would have a measurable effect?