Accession Number:

ADA202699

Title:

Holographic Particle Sizing in Solid Fuel Ramjets

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1988-09-01

Pagination or Media Count:

49.0

Abstract:

An investigation was conducted to determine the suitability of a holographic technique as a diagnostic tool for metallized fuel combustion in a two-dimensional solid fuel ramjet. The highly metallized fuels were burned under conditions similar to actual flight conditions. If found suitable, the objective was to produce a three-dimensional image of a volume in the boundary layer above the fuel surface, and to determine the particle size distribution in that volume. This distribution could be used to validate current models which must assume particle size, and could lead to better estimates of fuel regression rates and combustion efficiencies. Once the conditions for sustained combustion were determined, the technique was successfully demonstrated, even in the presence of large amounts of smoke. Holograms were obtained at two different chamber pressures for each of the fuels. However, current resolution limits of the technique are not sufficient to reveal the vast majority of the particles in the combustor. Keywords Solid fuel ramjet, Boron combustion, Metallized fuels, Ramjet, Holography.

Subject Categories:

  • Holography
  • Combustion and Ignition
  • Fuels
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE