Characterization of gas turbine combustion chambers with single pulse CARS thermometry

Temperature results of three measuring campaigns with the mobile CARS system of the DLR Stuttgart are presented. The experiments were performed on different combustion chambers: a thrust nozzle test facility, a RQL combustor, and a ramjet combustor. Single pulse CARS N 2 thermometry was used to characterize the homogeneity of the flame at the exit planc of the combustion chamber, to address the quality of mixing of fuel-rich burnt gas of the primary zone with secondary air. to find an improved design for the H 2 injection into a high speed air flow, and to measure the temperature and pressure variations in the shock controlled free jet flame. In the last case hoth the temperature and the pressure could be determined from the CARS spectrum.