Abstract: Segmented nozzles and tip shoes having improved seals for keeping hot gases from leaking through the gaps between adjacent segments. The seals have an interference fit with grooves in the opposite ends of adjacent segments and span the gaps between those segments. The seals are sufficiently flexible to fit non-parallel grooves, and they may have a concave cross-section which prevents binding and seal distortion in such circumstances.

Abstract: A gas turbine engine having a turbine with internally cooled, stationary nozzles incorporated into first and second stage nozzle segments and a system for supplying air to the nozzles, for effecting a flow of cooling air into impingement and film cooling relationships with a tip shoe mounted in the nozzle case, and for generating a flow of air which first impingement cools a nozzle case lip supporting the upstream ends of the second stage nozzle segments and then acts as a buffer, keeping hot gases from entering the space between the nozzles and the nozzle case.

Abstract: A gas turbine engine having a turbine with internally cooled, stationary nozzles, a rotor with internally cooled blades, and systems for supplying air to the nozzles and rotor and for cooling the nozzle case.