Development of gas-to-gas lift pad dynamic seals, volumes 1 and 2. Final report

Technical Report · Fri May 01 00:00:00 EDT 1987

OSTI ID:6332730

Pope, A N; Pugh, D W

Dynamic tests were performed on self acting (hydrodynamic) carbon face rotary shaft seals to assess their potential, relative to presently used labyrinth seals, for improving performance of aircraft gas turbine engines by reducing air leakage flow rate at compressor end seal locations. Three self acting bearing configurations, designed to supply load support at the interface of the stationary carbon seal and rotating seal race, were tested. Two configurations, the shrouded taper and shrouded flat step, were incorporated on the face of the stationary carbon seal element. The third configuration, inward pumping spiral grooves, was incorporated on the hard faced surface of the rotating seal race. Test results demonstrated seal leakage air flow rates from 75 to 95% lower that can be achieved with best state-of-the-art labyrinth designs and led to identification of the need for a more geometrically stable seal design configuration which is presently being manufactured for subsequent test evaluation.

• Research Organization: General Electric Co., Cincinnati, OH (USA)
• OSTI ID: 6332730
• Report Number(s): N-87-22245; NASA-CR-179486; NAS-1.26:179486; R-87-AEB432
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS TURBINE ENGINES
SEALS
PERFORMANCE TESTING
AIR FLOW
EXPERIMENTAL DATA
HYDRODYNAMICS
SHROUDS
COOLING SYSTEMS
DATA
ENERGY SYSTEMS
ENGINES
FLUID FLOW
FLUID MECHANICS
GAS FLOW
HEAT ENGINES
INFORMATION
INTERNAL COMBUSTION ENGINES
MECHANICS
NUMERICAL DATA
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
TESTING
421000* - Engineering- Combustion Systems