Abstract
Quasi-one-dimensional, both equilibrium and kinetic analyses were carried out to evaluate vitiation effects on thrust performance of a typical engine under M6 flight conditions. With incoming-flow parameters varied, it was found that matching static pressure and static temperature (or total enthalpy) of the incoming flow gave minimum deviation on engine performance between the non-vitiated and vitiated cases. However, change in thermal properties due to vitiation resulted in few percent deviation even in this case. This deviation could be corrected by using equilibrium analysis results even for kinetic calculation. Chemical kinetics was found to be dominant in relatively narrow range in fuel equivalence ratio.
