Accession Number : AD0849290

Title :   Metal Particle Combustion.

Descriptive Note : Progress rept. 1 May 67-30 Sep 68,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Prentice, J. L. ; Kraeutle, K. J.

Report Date : JAN 1969

Pagination or Media Count : 92

Abstract : This report includes a summary of experimental studies of the agglomeration and combustion of aluminum and beryllium particles in a variety of gases. Agglomeration studies were performed with a variety of high-heating rate techniques, including a high-energy continuous wave CO2 laser. Single particle combustion studies were performed using both a pulsed Nd-doped glass laser and a xenon flash heating apparatus. Use of an electrostatic particle suspension device is described. A scanning electron microscope (SEM) served as the major diagnostic tool for both agglomeration and particle combustion studies. Major differences in the agglomeration process between Al and Be are found which have been related to physical properties of the metals and their respective oxides. New data on the burning rate of laser-ignited Al particles is presented. Scanning electron microscope pictures of the evolution of geometry of burning Be particles are presented for the first time. The effect of water on the combustion of beryllium particles is documented. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANTS, COAGULATION), (*ALUMINUM, COMBUSTION), (*BERYLLIUM, COMBUSTION), GAS LASERS, CARBON DIOXIDE, ELECTRON MICROSCOPY, BURNING RATE, IGNITION.

Subject Categories : Combustion and Ignition
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE