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Effect of NACA Injection Impeller on Mixture Distribution of Double-Row Radial Aircraft EngineThe 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.
Document ID
19930091898
Document Type
Other
Authors
Marble, Frank E
Ritter, William K
Miller, Mahlon A
Date Acquired
September 6, 2013
Publication Date
January 1, 1945
Report/Patent Number
NACA-TR-821
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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