Project Title:

H2O2 Three-Body Reaction Rates at High Temperatures

01.04-9030
H2O2 Three-Body Reaction Rates at High Temperatures 
Physical Sciences Inc.
20 New England Business Center
Andover
MA
01810
William J.
Marinelli
(508-475-9030)
LeRC

Abstract:

Scramjet propulsion requires efficient fuel burning at low static pressures and high
internal velocities. Calculations based on equilibrium chemistry are not valid under
these conditions because many of the bi-molecular propagation and ter-molecular recombination
reactions are slow. Modelling with finite-rate chemistry is hindered by poor knowledge
of many of the three-body rate coefficients. This project uses innovative laser-induced
fluorescence diagnostics in a unique facility to measure these rates at high temperatures.
Radical species of interest will be produced cleanly by laser flash photolysis of
parent compounds. 
In Phase I, system capability will be demonstrated by measuring one of the three-body
rates at a temperature of 1000 K and determining the sensitivity of the diagnostic
method. Phase II of the project would measure several three-body rate coefficients
as a function of temperature.
otential Commercial Applications:  The uses would be in the the development of single-stage-to-orbit
vehicles.