A Novel Oscillating Jet - Its Effect on Ejector Thrust Augmentation.

Abstract

A plane subsonic turbulent jet was excited by a special oscillating nozzle. Its overall performance compares favorably with that of the vane excited jet investigated earlier. The nozzle when installed in an ejector system yielded a thrust augmentation ratio of 1.6 at an excitation frequency of 20 Hz. The dynamics of the oscillating flow was examined in the light of the Korst theory. Keywords include: Ejector; Fluid mechanics; and Jet propulsion.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1985
Accession Number
ADA157480

Entities

People

  • E. Rickenbaker
  • M. A. Badri Narayanan
  • M. F. Platzer

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Dynamics
  • Excitation
  • Fluid Dynamics
  • Fluid Mechanics
  • Frequency
  • Jet Propulsion
  • Measurement
  • Plenum Chambers
  • Pressure Transducers
  • Reynolds Number
  • Static Pressure
  • Strain Gages
  • Strouhal Number
  • Test Facilities
  • Thrust
  • Thrust Augmentation

Fields of Study

  • Engineering
  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.