Accession Number:

ADA022671

Title:

Environmental Study of Toxic Exhausts.

Descriptive Note:

Final rept. Feb 73-Sep 74,

Corporate Author:

NAVAL WEAPONS CENTER CHINA LAKE CALIF

Personal Author(s):

Report Date:

1976-02-01

Pagination or Media Count:

104.0

Abstract:

Some aspects of the environmental hazard of large solid rocket motors have been investigated. Adsorption experiments of HClg and COg onto Al2O3 were performed. The afterburning of CO to CO2 was found to be 99 complete. The ground cloud produced during a Titan launch would contain 9 ppm CO initially and 50-82 ppm CO if the total burn occurred on the pad. Hydrogen chloride and nitric oxide measurements were made in the ground clouds produced from small solid rocket motors. Experiments indicated that lower than thermodynamically predicted NO concentrations exist in the ground cloud. The HCl dosages measured show the HCl in the intial ground cloud to be approximately that predicted thermodynamically. The initial ground cloud is non-homogeneous in HCl and NO, and HClg was found outside the visible cloud. Experiments were also performed comparing five different HCl detectors under field conditions. The instrument comparison showed that little HCl aerosol exists in the turbulent ground cloud for relative humidities less than 30. Also, the HCl tied to particles is much higher than what would be predicted from laboratory experiments.

Subject Categories:

  • Solid Propellant Rocket Engines
  • Solid Rocket Propellants
  • Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE