An investigation of the use of discharge valves and an intake control for improving the performance of N.A.C.A. Roots type supercharger (1929)
NASA Technical Reports Server (NTRS) · leaf 5
sented in the form of pressure-volume cards and curves. The pressure-volume card ABCD, shown in Figure. 3, represents the work done in compressing the air by the conventional supercharger which operates against the delivery pressure throughout the complete cycle, and the pressure-volume card AB'CD,… … O ~~ 10 20 30 40 0 10 20 30 40 50 60 70 80 30 Power saving, per cent Horsepower Fig. 4—The percentage power saving and the power saved for the modified Roots supercharger with and without an intake control and the power required by the modified compared with the conventional critical altitude of…
NASA Technical Reports Server (NTRS)
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