Effect of the NACA Injection Impeller on the Mixture Distribution of a Double-Row Radial Aircraft Engine

Abstract

For the normal range of engine power the impeller provided marked improvement over the standard spray-bar injection system. Mixture distribution at cruising was excellent, maximum cylinder temperatures were reduced about 30 degrees F, and general temperature distribution was improved. The uniform mixture distribution restored the normal response of cylinder temperature to mixture enrichment and it reduced the possibility of carburetor icing, while no serious loss in supercharger pressure rise resulted from injection of fuel near the impeller outlet. The injection impeller also furnished a convenient means of adding water to the charge mixture for internal cooling.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1946
Accession Number
ADA800679

Entities

People

  • Frank E. Marble
  • Mahlon A. Miller
  • William K. Ritter

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautics
  • Air Flow
  • Air Pressure
  • Air Temperature
  • Aircraft Engines
  • Aircrafts
  • Carburetors
  • Combustion
  • Cooling
  • Engines
  • Exhaust Valves
  • Flow
  • Fuel Air Ratio
  • Fuel Injection
  • Standards

Readers

  • Aerodynamics.
  • Combustion and Flow Dynamics.
  • Mathematics or Statistics