Laser Velocimeter Utilization in Jet Engine Altitude Test Cells

Abstract

The feasibility of utilizing a laser velocimeter (LV) in turbine engine testing in an altitude test cell was investigated. A one-component LV and associated environmental control system (ECS) were designed, fabricated, and installed in Test Cell J-2 of the Engine Test Facility (ETF). LV measurements made on the centerline of an F101 engine at one axial station downstream of the nozzle exit are presented and compared to the calculated exit velocity. Design data are presented on the vibration levels and temperatures encountered by the LV over a range of engine operating conditions. It was found that sufficient natural seed material existed in the exhaust flow to allow the LV to characterize the exit velocity of a turbojet engine during altitude testing.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADA041019

Entities

People

  • D. B. Brayton
  • D. O. Barnett

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Air Force
  • Control Systems
  • Data Acquisition
  • Engineering
  • Gas Turbines
  • Instrumentation
  • Jet Engines
  • Laser Velocimeters
  • Lasers
  • Measurement
  • Particle Size
  • Propulsion Systems
  • Turbines
  • Turbofan Engines
  • Turbojet Engines
  • Velocimeters

Fields of Study

  • Physics

Readers

  • Energy Conservation and Renewable Energy Engineering.
  • Fluid Dynamics.
  • Rocket Propulsion.

Technology Areas

  • Directed Energy