Tests of Air Valves for Intermittent-Jet Engines at Speeds of 20 and 25 Cycles per Second

Abstract

A study of automatic nonreturn air valves for use in an intermittent-jet engine has been made. A test apparatus that simulates the cycle pressure variations in an intermittent-jet engine was devised and five types of valve were tested in this apparatus at speeds of 20 and 25 cycles per second. Four valve-spring and three valve-grill materials were used. Blue spring steel was the best valve-spring material tried and aluminum the best grill material. Altering the contour of the valve support structure or grill, with the result that the valve spring in the normal position was arched rather than fitted to the grill along its length, improved the life of the valve. The results of these tests are preliminary in nature, inasmuch as the speeds of present application are higher than those of this series of tests and relative in that the effect of various factors was determined.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1945
Accession Number
ADA801397

Entities

People

  • Joseph R. Bressman
  • Robert J. Mccready

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Aluminum
  • Chambers
  • Combustion
  • Combustion Chambers
  • Engines
  • Frequency
  • Jet Engines
  • Mass Flow
  • Materials
  • Navy
  • Pressure Measurement
  • Resonant Frequency
  • Static Pressure
  • Steady Flow
  • Trailing Edges
  • Valves

Readers

  • Geodesy
  • Rocket Propulsion.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).