摘要: |
The purpose of this task is to provide the Office of the Associate Administrator for Commercial Space Transportation (AST) with a more detailed understanding of how hydrocarbon emissions from emerging commercial spaceflight systems could affect climate and ozone. The Volpe Center shall quantify the changes in atmospheric radiation and ozone caused by emissions from two types of hydrocarbon fueled rocket engines - nitrous oxide/ Hydroxyl-terminated polybutadiene (N2O/HTPB) hybrid and (2) liquid oxygen (LOX)/kerosene. Calculations will be based on commonly accepted descriptions of emissions profiles (for H2O, CO2, N2O, NOX, and soot) and projected launch scenarios for low, medium, and high traffic. |