Optical Measurements at the Combustor Exit of the HIFiRE 2 Ground Test Engine

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Optical Measurements at the Combustor Exit of the HIFiRE 2 Ground Test Engine

Brown, Michael S. / Herring, Gregory C. / Cabell, Karen / Hass, Neal / Barhorst, Todd F. / Gruber, Mark

The development of optical techniques capable of measuring in-stream flow properties of air breathing hypersonic engines is a goal of the Aerospace Propulsion Division at AFRL. Of particular interest are techniques such as tunable diode laser absorption spectroscopy that can be implemented in both ground and flight test efforts. We recently executed a measurement campaign at the exit of the combustor of the HIFiRE 2 ground test engine during Phase II operation of the engine. Data was collected in anticipation of similar data sets to be collected during the flight experiment. The ground test optical data provides a means to evaluate signal processing algorithms particularly those associated with limited line of sight tomography. Equally important, this in-stream data was collected to compliment data acquired with surface-mounted instrumentation and the accompanying flowpath modeling efforts-both CFD and lower order modeling. Here we discuss the specifics of hardware and data collection along with a coarse-grained look at the acquired data and our approach to processing and analyzing it.

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Title :

Optical Measurements at the Combustor Exit of the HIFiRE 2 Ground Test Engine

Contributors:

Brown, Michael S. (author) / Herring, Gregory C. (author) / Cabell, Karen (author) / Hass, Neal (author) / Barhorst, Todd F. (author) / Gruber, Mark (author)

Conference:

13th AIAA Gossamer Systems Forum ; 2012 ; Honolulu, HI, United States
53rd Structures, Structural Dynamics, and Materials Conference (SDM) ; 2012 ; Honolulu, HI, United States
20th AIAA/ASME/AHS Adaptive Structures Conference ; 2012 ; Honolulu, HI, United States
14th AIAA Non-Deterministic Approaches Conference ; 2012 ; Honolulu, HI, United States

Publication date :

2012-04-23

Type of media :

Conference paper

Type of material :

No indication

Language :

English

Keywords :

Optics