Terminal-Shock and Restart Control of a Mach 2.5, Mixed-Compression Inlet Coupled to a Turbofan Engine.

Abstract

Results of an experimental program conducted on a mixed-compression inlet coupled to a turbofan engine are presented. Open-loop frequency response data are presented that show the response of shock position (as measured by an average inlet static pressure) to sinusoidal airflow disturbances produced at the compressor face station. Also presented are results showing the effect of different passive terminations (a choke plate or a long duct) on the characteristics of the inlet. Transfer functions obtained by using experimental data are presented and compared to the experimental data. Closed-loop frequency response of shock position (with a proportional-plus-integral controller) is presented. In addition, transient data are presented that show the unstart-restart characteristics of the inlet.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1974
Accession Number
ADA292801

Entities

People

  • Carl J. Daniele
  • Peter G. Batterton
  • Robert J. Baumbick

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Compression
  • Compressors
  • Control Systems
  • Engines
  • Experimental Data
  • Flow
  • Frequency
  • Frequency Domain
  • Frequency Response
  • Instrumentation
  • Propulsion Systems
  • Static Pressure
  • Steady State
  • Transducers
  • Transfer Functions
  • Turbofan Engines
  • Turbojet Engines

Readers

  • Aerodynamics.
  • Robotics and Automation.