Nonequilibrium Rocket Nozzle Recombination Losses

摘要

Nonequilibrium performance losses are interpreted in terms of radical concentrations and extent of recombination throughout the expansion process. A brief description of the Bray method for determining the location of departure from equilibrium flow in a rocket nozzle is given. The analysis is applied to N2O4aerozine, H2-O2 and H2-F2 propellants and a hypothetical H2-C12 system to obtain the point of effective freezing as a function of area ratio. The kinetic rates for the reactions occurring in the combustion process are discussed, and the values for the rates are included. (Author)