Accession Number : AD0814801

Title :   TOXIC EXHAUST CLOUD DIFFUSION STUDY.

Descriptive Note : Final rept. 1 Jun 66-18 Jan 67,

Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CA

Personal Author(s) : Dilts, R. L. ; Robinson, L. H. ; Ghilarducci, H. E.

Report Date : MAY 1967

Pagination or Media Count : 74

Abstract : A field study of exhaust cloud diffusion from solid rocket motors was conducted at the Aerojet-General Lovelock, Nevada facility. The primary objective of the program was to attempt to correlate the diffusion of puff-type rocket motor exhaust clouds with measurable meteorological variables under stable atmospheric conditions. Two sets of field data were collected from 413 air samplers used during the static tests of rocket motors containing a nominal 2100 lb of propellant. The difference in the values of the predicted versus the measured exposure data is discussed and a generalized estimation procedure is presented. The results from this exposure data were much lower than anticipated and indicate a significant mass loss. The most probable explanation is that the exhaust clouds penetrated the shallow inversions defined by the upper air temperature profiles. Consequently, a large percentage of the tracer particles could not penetrate the bottom lid of the inversion to return to the ground as the clouds diffused. This explains the mass loss although particle deposition could also be involved. Since the study was limited to two sets of field data, specific correlations of exhaust cloud diffusion with measurable meteorological variables could not be attempted. (Author)

Descriptors :   (*EXHAUST GASES, DIFFUSION), (*SOLID PROPELLANT ROCKET ENGINES, EXHAUST GASES), TOXICITY, PREDICTIONS, METEOROLOGICAL PHENOMENA, WIND, EQUATIONS, CLOUDS.

Subject Categories : Toxicology
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE