Accession Number : ADA260888


Title :   Measurements of Sub-Micron AL203 Particles in Rocket Plumes


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Vaughn, John K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260888.pdf


Report Date : Dec 1992


Pagination or Media Count : 53


Abstract : Transmission measurements using six wavelengths were made through the edges of plumes for solid propellant rocket motors using various propellants and motor geometries. The average values obtained for the aluminum oxide particles were a Sauter mean diameter of O.30+ or -.02 microns, an index of refraction of 1.64 + or -.04 and standard deviation of 1.52+ or -.12 for the assumed monomodal, log-normal size distribution. The results indicated that the small aluminum oxide particles in the plume edge were gamma-AL203, independent of propellant composition, motor operating conditions and nozzle geometry. The good correlation of the data indicated that the small particles can be adequately represented by a monomodal, log-normal distribution.


Descriptors :   *PARTICLES , *ALUMINUM OXIDES , *LIGHT TRANSMISSION , *SOLID PROPELLANTS , *ROCKET ENGINES , *PLUMES , METALS , DIAMETERS , MEASUREMENT , PARTICLE SIZE , DISTRIBUTION , NOZZLES , OPTICAL INSTRUMENTS , NORMAL DISTRIBUTION , STANDARD DEVIATION , MOTORS , EXHAUST PLUMES , REFRACTION , MEAN , GEOMETRY , EDGES , OXIDES , THESES , PROPELLANTS , COMBUSTION , CORRELATION , FLOW FIELDS


Subject Categories : Inorganic Chemistry
      Optics
      Combustion and Ignition
      Solid Propellant Rocket Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE