The comparative performance of Roots type aircraft engine superchargers as affected by change in impeller speed and displacement (1929)
NASA Technical Reports Server (NTRS) · leaf 11
the following manner: 11 in. supercharger; n= 1.53 8}4 m- supercharger; n = 1.48 4 in. supercharger; ^=1.36 Comparative Performance for Given Requirements: While the individual effects of speed and displacement have been discussed in the pre- ceding paragraphs, speed and displacement must be… … Impeller lengfh, inches Air delivered, lb./sec. Fig. 8.—Comparative performances of three superchargers for Fig. 9.—Comparative performances for three superchargers for definite im- definite rates of air delivery and variable impeller length peller length and variable rate of air delivery
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