Correlation of Cooling Data from an Air-Cooled Cylinder and Several Multicylinder Engines

Abstract

The theory of engine-cylinder cooling developed in a previous report was further substantiated by data obtained on a cylinder from a Wright R-1820-G engine. Equations are presented for the average head and barrel temperatures of this cylinder as functions of the engine and the cooling conditions. These equations are utilized to calculate the variation in cylinder temperature with altitude for level flight and climb. A method is presented for correlating average head and barrel temperatures and temperatures at individual points on the head and the barrel obtained on the test stand and in flight. The method is applied to the correlation and the comparison of data obtained on a number of service engines. Data are presented showing the variation of cylinder temperature with time when the power and the cooling pressure drop are suddenly changed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1940
Accession Number
ADA279426

Entities

People

  • Benjamin Pinkel
  • Herman H. Ellerbrock Jr.

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Cooled
  • Air Temperature
  • Back Pressure
  • Combustion
  • Cooling
  • Engine Cylinders
  • Equations
  • Flow
  • Fuel Air Ratio
  • Gas Flow
  • Heat Transfer
  • Heat Transfer Coefficients
  • Level Flight
  • Mass Flow
  • Sea Level
  • Spark Plugs
  • Test Stands

Fields of Study

  • Engineering

Readers

  • Aerospace Engineering
  • Combustion and Flow Dynamics.
  • Structural Dynamics.