Accession Number:

ADA413330

Title:

Real-Time Measurements of Reactive Chlorine and Carbon Dioxide in Rocket Plumes

Descriptive Note:

Final technical rept. Nov 1999-Dec 2003

Corporate Author:

COLORADO UNIV AT BOULDER

Personal Author(s):

Report Date:

2003-04-23

Pagination or Media Count:

27.0

Abstract:

The objectives of this work were to measure reactive chlorine Cl, ClO, and Cl2O2 and carbon dioxide CO2 and to examine the mechanisms of ozone loss in the plumes of various rockets as part of an ongoing investigation of the impacts of rocket emissions on stratospheric ozone. This work has demonstrated that ozone losses in rocket plumes proceed at rates that can be explained by standard ozone loss chemistry involving the ClO radical - chemistry that is analogous to that occurring in the winter polar vortices. This work has also helped to identify an error in a key kinetic parameten In combination with fast response measurements of Cl and ClO in the plume of STS-106, we have shown that calculations based on the revised rate constant for ClOClO, along with consideration of non-linear effects, can explain ozone loss rates within the uncertainties of the measurements.

Subject Categories:

  • Combustion and Ignition
  • Rocket Engines
  • Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE