In-situ measurements of alumina particle size and optical constants in composite solid propellant flames

Quinn Brewster, David L. Parry

Research output: Contribution to conferencePaper

Abstract

The complex refractive index (n-ik) at 0.6328ym and the effective optical diameter of alumina particles in ammonium perchlorate (AP) composite solid propellant flames were measured in-situ using an inverse light scattering technique. Measured bidirectional reflectance and transmittance values were used to obtain n values, between 1.3 and 1.8 and k values between 0.04 and 0.6. The effective alumina diameter was determined (by the absence or existence of solutions to the Inverse scattering problem) to be between 0.26 and 0.30 um. Forward scattering dominated back scattering to such an extent that even a linear anisotropic scattering model would be inaccurate in describing the radiative transport. The alumina single scattering albedo was found to be in the range 0.5 to 0.7.

Original languageEnglish (US)
StatePublished - Jan 1 1987
EventAIAA 22nd Thermophysics Conference, 1987 - Honolulu, United States
Duration: Jun 8 1987Jun 10 1987

Other

OtherAIAA 22nd Thermophysics Conference, 1987
CountryUnited States
CityHonolulu
Period6/8/876/10/87

Fingerprint

Solid propellants
Optical constants
Alumina
Particle size
Scattering
Composite materials
Forward scattering
Radiative transfer
Light scattering
Refractive index

ASJC Scopus subject areas

  • Mechanical Engineering
  • Aerospace Engineering

Cite this

Brewster, Q., & Parry, D. L. (1987). In-situ measurements of alumina particle size and optical constants in composite solid propellant flames. Paper presented at AIAA 22nd Thermophysics Conference, 1987, Honolulu, United States.

In-situ measurements of alumina particle size and optical constants in composite solid propellant flames. / Brewster, Quinn; Parry, David L.

1987. Paper presented at AIAA 22nd Thermophysics Conference, 1987, Honolulu, United States.

Research output: Contribution to conferencePaper

Brewster, Q & Parry, DL 1987, 'In-situ measurements of alumina particle size and optical constants in composite solid propellant flames', Paper presented at AIAA 22nd Thermophysics Conference, 1987, Honolulu, United States, 6/8/87 - 6/10/87.
Brewster Q, Parry DL. In-situ measurements of alumina particle size and optical constants in composite solid propellant flames. 1987. Paper presented at AIAA 22nd Thermophysics Conference, 1987, Honolulu, United States.
Brewster, Quinn ; Parry, David L. / In-situ measurements of alumina particle size and optical constants in composite solid propellant flames. Paper presented at AIAA 22nd Thermophysics Conference, 1987, Honolulu, United States.
@conference{86f6866ffb6547f1a7e09192c6ff52c9,
title = "In-situ measurements of alumina particle size and optical constants in composite solid propellant flames",
abstract = "The complex refractive index (n-ik) at 0.6328ym and the effective optical diameter of alumina particles in ammonium perchlorate (AP) composite solid propellant flames were measured in-situ using an inverse light scattering technique. Measured bidirectional reflectance and transmittance values were used to obtain n values, between 1.3 and 1.8 and k values between 0.04 and 0.6. The effective alumina diameter was determined (by the absence or existence of solutions to the Inverse scattering problem) to be between 0.26 and 0.30 um. Forward scattering dominated back scattering to such an extent that even a linear anisotropic scattering model would be inaccurate in describing the radiative transport. The alumina single scattering albedo was found to be in the range 0.5 to 0.7.",
author = "Quinn Brewster and Parry, {David L.}",
year = "1987",
month = "1",
day = "1",
language = "English (US)",
note = "AIAA 22nd Thermophysics Conference, 1987 ; Conference date: 08-06-1987 Through 10-06-1987",

}

TY - CONF

T1 - In-situ measurements of alumina particle size and optical constants in composite solid propellant flames

AU - Brewster, Quinn

AU - Parry, David L.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - The complex refractive index (n-ik) at 0.6328ym and the effective optical diameter of alumina particles in ammonium perchlorate (AP) composite solid propellant flames were measured in-situ using an inverse light scattering technique. Measured bidirectional reflectance and transmittance values were used to obtain n values, between 1.3 and 1.8 and k values between 0.04 and 0.6. The effective alumina diameter was determined (by the absence or existence of solutions to the Inverse scattering problem) to be between 0.26 and 0.30 um. Forward scattering dominated back scattering to such an extent that even a linear anisotropic scattering model would be inaccurate in describing the radiative transport. The alumina single scattering albedo was found to be in the range 0.5 to 0.7.

AB - The complex refractive index (n-ik) at 0.6328ym and the effective optical diameter of alumina particles in ammonium perchlorate (AP) composite solid propellant flames were measured in-situ using an inverse light scattering technique. Measured bidirectional reflectance and transmittance values were used to obtain n values, between 1.3 and 1.8 and k values between 0.04 and 0.6. The effective alumina diameter was determined (by the absence or existence of solutions to the Inverse scattering problem) to be between 0.26 and 0.30 um. Forward scattering dominated back scattering to such an extent that even a linear anisotropic scattering model would be inaccurate in describing the radiative transport. The alumina single scattering albedo was found to be in the range 0.5 to 0.7.

UR - http://www.scopus.com/inward/record.url?scp=84997610338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84997610338&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84997610338

ER -