Diode Laser Diagnostics of High Speed Flows (Postprint)

Abstract

This document contains the specific requirements and preliminary results for the Optical Mass Capture (OMC) experiment for the Fundamental RESearch Hypersonic Flight experimentation (FRESH Fx) program. The objective of this effort is to develop and demonstrate in flight a diode-laser-based measurement of engine air mass capture in the inlet or isolator of a hypersonic vehicle over an altitude range of 60,000-90,000 ft with an average Mach number of 7.5 over this range. The concept involves the direct measurement of oxygen concentration via absorption spectroscopy, and gas velocity via the Doppler shift of laser light transiting the flowpath. The deduced density-velocity product in a known flow area yields the mass flow rate.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2006
Accession Number
ADA473964

Entities

People

  • Andrew D. Sappey
  • Dominic Barone
  • K. C. Lin
  • Kevin M. Jackson
  • Pat Masterson
  • Qingchun Zhao
  • Skip Williams
  • Todd Barhorst

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Air Force Research Laboratories
  • Combustion
  • Combustion Products
  • Detectors
  • Doppler Effect
  • Frequency
  • Frequency Shift
  • Laser Beams
  • Laser Diodes
  • Laser Spectroscopy
  • Lasers
  • Mach Number
  • Measurement
  • Spectroscopy
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Hypersonics
  • Hypersonics - Hypersonic Flow