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Effect of NACA Injection Impeller on Mixture Distribution of Double-Row Radial Aircraft Engine
"The NACA injection impeller was developed to improve the mixture distribution of aircraft engines by discharging the fuel from a centrifugal supercharger impeller and thus to promote a thorough mixing of fuel and charge air. Experiments with a double-row radial aircraft engine indicated that for the normal range of engine power the NACA injection impeller provided marked improvement in mixture distribution over the standard spray-bar injection system used in the same engine. The mixture distribution at cruising conditions was excellent; at 1200, 1500, and 1700 brake horsepower, the differences between the fuel-air ratios of the richest and the leanest cylinders were reduced to approximately one-third their former values" (p. 217).
Date:
November 14, 1945
Creator:
Marble, Frank E.; Ritter, William K. & Miller, Mahlon A.
System:
The UNT Digital Library