Frank -
Quote:
Originally Posted by Frank Lee
Perforated screens are velocity sensitive; at low speeds they let in about what you'd expect- say, a 30% open screen will let in 30% of what an unobstructed vent would- and at higher speeds they "close up" to the oncoming flow and appear to the air to be more "solid".
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This is cool because I think you may end up creating an "aesthetic" that is also MPG efficient. Aaaaaaaaand ..... it's a passive design. No moving parts means uber-reliability and cheap to make.
CarloSW2