Comparisons of Rig and Engine Dynamic Events in the Compressor of an Axi-Centrifugal Turboshaft Engine.

Abstract

Steady state and dynamic data were acquired in a T55-L-712 compressor rig. In addition, a T55-L-712 engine was instrumented and similar data were acquired. Rig and engine stall/surge data were analyzed using modal techniques. This paper compares rig and engine preliminary results for the ground idle (approximately 60% of design speed) point. The results of these analyses indicate both rig and engine dynamic events are preceded by indications of traveling wave energy in front of the compressor face. For both rig and engine, the traveling wave energy contains broad band energy with some prominent narrow peaks and, while the events are similar in many ways, some noticeable differences exist between the results of the analyses of rig data and engine data.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1996
Accession Number
ADA326159

Entities

People

  • A. K. Owen
  • Duane L. Mattern
  • Dzu K. Le

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acquisition
  • Compression
  • Compressors
  • Control Systems
  • Data Acquisition
  • Energy Bands
  • Engine Surge
  • Fourier Analysis
  • Frequency
  • Gas Turbines
  • Instrumentation
  • Pressure Transducers
  • Test Facilities
  • Turbines
  • Turbojet Engines
  • Turboshaft Engines
  • Vehicles

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Space/Atmospheric Physics.