Try it stoichiometrically:
Air flow must be proportional to fuel flow
Use a ratio of 15:1 (just easier that 14.7 reference value)
so 1 gallon per hour (6 lbs) is 15*6 = 90 pounds/air per hour
Dry air at 1 STP = 0.0807 lbs/ft^3
so 90lbs of air = 1115 ft^3 per hour per gph = 18.6 ft^3 per min
Typical Rotax Fuel Flow =5 gph = 93 Ft^3/min Air flow
Air flow into manifold should not depend on turbo settings or anything
else directly except keeping mixture at proper ratio.
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Ira N224XS
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http://forums.matronics.com/viewtopic.php?p=295662#295662
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