Comparative Performance of a Powerplus Vane-type Supercharger and an N.A.C.A. Roots-type Supercharger (1932)
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Fig.6 N.A.C.A. Technical Note lTo.426 39.92 … Vol-one, culiic feet per va.ne or lolDe Displacement of each supercharger = 4 x 0.135 = 0.544 cu.ft./rev. Fig.6 Comparison of pressure-vol-ame cards of Powerplus and N.A.C.A. Roots superchargers neglecting slip.
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