Abstract: A catalytic combustion system includes a combustor having a diffuser end portion supported for sliding thermal growth by a catalytic unit through a spring clip ring assembly. The catalytic unit includes two shell portions which are secured together to support a catalytic element within the shell. A ring supports the catalytic unit on the transition duct for sliding thermal axial growth through a spring ring and receives catalytic element thrust. The parts are structurally arranged for installation and maintenance through an opening in the turbine casing.

Abstract: A self-contained temperature probe assembly for sensing the disc cavity temperature of a gas turbine engine is shown. The assembly includes a thermocouple probe comprising an upper tube and a lower tube housing the probe leads. The lower tube extends from the cylinder housing through the blade ring to guide the probe tip through a hollow vane to adjacent a rotor disc and includes a tapered portion for sealing engagement with a tapered aperture in the blade ring as biased by a coil spring. The upper tube extends outwardly from the turbine cylinder to the probe head. The adjacent ends of the two tubes are retained in a standard flange in predetermined spaced relation against outward withdrawal and the lead wires are coiled within the space to maintain a slack condition to prevent transmission of vibration of the lead wires into the probe head and also prevent the rather fragile wires from supporting any weight of the probe during shipping or installation of the probe to the turbine.