Particle size determination in small solid propellant rocket motors using the diffractively scattered light method.
Cramer, Robert Grewelle.
MetadataShow full item record
A dual beam apparatus was developed which simultaneously measured particle size (D32) at the entrance and exit of an exhaust nozzle of a small solid propellant rocket motor. The diameters were determined using measurements of dif fractiveiy scattered laser power spectra. The apparatus was calibrated by using spherical glass beads and aluminum oxide powder. Measurements were successfully made at both locations. Because of the presence of char agglomerates in the exhaust, continued effort is required to improve the grain design in order to obtain consistent "across nozzle" data.
Approved for public release; distribution unlimited