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

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
General Electric Co., Cincinnati, OH (USA)
OSTI Identifier:
6332730
Report Number(s):
N-87-22245; NASA-CR-179486; NAS-1.26:179486; R-87-AEB432
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Pope, A N, and Pugh, D W. Development of gas-to-gas lift pad dynamic seals, volumes 1 and 2. Final report. United States: N. p., 1987. Web.
Pope, A N, & Pugh, D W. Development of gas-to-gas lift pad dynamic seals, volumes 1 and 2. Final report. United States.
Pope, A N, and Pugh, D W. 1987. "Development of gas-to-gas lift pad dynamic seals, volumes 1 and 2. Final report". United States.
@article{osti_6332730,
title = {Development of gas-to-gas lift pad dynamic seals, volumes 1 and 2. Final report},
author = {Pope, A N and Pugh, D W},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6332730}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 01 00:00:00 EDT 1987},
month = {Fri May 01 00:00:00 EDT 1987}
}

Technical Report:
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