wyn, what makes anything vacuum? what makes something "suck" air into it? In actual fact, its not a vacuum, its the pressure of 14.7psi atmo that pushes air in to fill that void, thats why im still confused by what could cause this 14.7 to increase without any increase on the propulsion side.
Dave please simplify what those links say, cos im not sure what the point is that ur referring too. As for that pulse flow phenomenon, I guess for me the point was that no matter what that void is, the air can only fill that void at 14.7 psi of pressure created by the atmo?
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