Publication Date:
2017-10-02
Description:
Gas path seals are discussed with emphasis on sealing clearance effects on engine component efficiency, compressor pressure ratio, and stall margin. Various case-rotor relative displacements, which affect gas path seal clearances, are identified. Forces produced by nonuniform sealing clearances and their effect on rotor stability are examined qualitatively, and recent work on turbine-blade-tip sealing for high temperatures is described. The need for active clearance control and for engine structural analysis is discussed. The functions of the internal-flow system and its seals are reviewed.
Keywords:
AIRCRAFT PROPULSION AND POWER
Type:
AGARD Seal Technol. in Gas Turbine Eng.; 41 p
Format:
text
Permalink