High-Speed, High-Temperature Finger Seal Test Results. AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit (38th) Held in Indianapolis, IN on July 7-10, 2002

Abstract

Finger seals have significantly lower leakage rates than conventional labyrinth seals used in gas turbine engines and are expected to decrease specific fuel consumption by over 1 percent and to decrease direct operating cost by over 0.5 percent. Their compliant design accommodates shaft growth and motion due to thermal and dynamic loads with minimal wear. The cost to fabricate these finger seals is estimated to be about half the cost to fabricate brush seals. A finger seal has been tested in NASA's High Temperature, High Speed Turbine Seal Test Rig at operating conditions up to 1200 deg F, 1200 ft/s, and 75 psid. Static, performance and endurance test results are presented. While seal leakage and wear performance are acceptable, further design improvements are needed to reduce the seal power loss.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2002
Accession Number
ADA405343

Entities

People

  • Arun Kumar
  • Irebert R. Delgado
  • Margaret P. Proctor

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Air Temperature
  • Astronautics
  • Body Weight
  • Design Criteria
  • Engines
  • Flow
  • Gas Turbines
  • High Temperature
  • Hysteresis
  • Maintenance Costs
  • Measurement
  • Military Research
  • Performance Tests
  • Power
  • Space Sciences
  • Turbines

Readers

  • Software Engineering
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).