Prediction and Evaluation of Thrust Augmenting Ejector Performance at the Conceptual Design Stage

Abstract

The performance characteristics of thrust augmenting ejectors, based on a computerized one-dimensional analysis technique, are shown. Various loss mechanisms within the ejector are described and the sensitivity of the ejector performance to these loss mechanisms are illustrated. Performance estimates have been made for several ejector configurations for which experimental data are available. Despite the assumptions that have to be made, in order that the problem be tractable for the one dimensional analysis, good agreement between the predicted and experimental values have been obtained. Other more complex (2 D and 3 D) codes have also been examined but were found to be expensive to run and in some cases limited in application. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1980
Accession Number
ADA093953

Entities

People

  • K. A. Green

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Computational Fluid Dynamics
  • Diffusion
  • Energy Transfer
  • Equations
  • Experimental Data
  • Free Stream
  • Geometry
  • Length
  • Mass Flow
  • Plastic Explosives
  • Scale Models
  • Secondary Flow
  • Static Pressure
  • Three Dimensional
  • Two Dimensional

Readers

  • Combustion and Flow Dynamics.
  • Regression Analysis.
  • Theoretical Analysis.