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Zero-porosity. Common slang for a type of fabric relatively impermeable to air. The less air that flows through the fabric wing of a ram air parachute, the more efficiently it flies.
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| Zero Porosity |
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Means Non-porous to air. (Not technically the correct term, but it's the one Skydivers use). Air does not go through it making ZP Canopies very efficient wings
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