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High-Altitude Relight Test Facility

The High-Altitude Relight Test Facility (HARTF) is a new testbed that supports a variety of aerodynamics, spray, and combustion testing at simulated high altitude conditions:

  • Ignition and lean blow-out performance evaluation
  • Fuel spray diagnostics
  • Combustion analysis
  • Combustion efficiency at sub-idle conditions
  • The facility was designed to support industrial multi-cup gas turbine engine combustor sectors at high-altitude windmilling (engine relight) conditions.

    Low pressure is achieved with an air jet ejector, and in tandem with a large bypass control valve, the altitude simulation in the test section can be modulated from sea level to 40,000 ft altitude. A cryogenic air chiller, supplied by liquid nitrogen, can chill air temperatures below -50°F. Our recent in-house tests have stretched the chilling limit to -80°F.

    Facility Features

    • Back Pressure: < 2.7 psia
    • Air Chilling: < -50°F
    • Altitude Testing: up to 40,000 ft
    • Multi-channel DAQ
    • Real-time monitoring and control
    • Variable-power spark ignition system
    • 3-way optical access to combustion zone
    • Traverse control: 3D, fully-automated
    • Diagnostics: PDPA, LDA, emission measurements, high-speed video


    Copyright Information © 2015 University of Cincinnati
    College of Engineering & Applied Science | Department of Aerospace Engineering & Engineering Mechanics