Accession Number:

ADA114692

Title:

Gas Foil Bearing Development Program.

Descriptive Note:

Final technical rept. 1 Jul 79-28 Feb 81,

Corporate Author:

GARRETT TURBINE ENGINE CO PHOENIX AZ

Personal Author(s):

• Suriano,Francis J.

Report Date:

1981-09-01

Pagination or Media Count:

135.0

Abstract:

This document presents the final technical report for the nineteen-month gas foil bearing development program. The 3.5-inch foil bearing design was analyzed using an elasto-hydrodynamic analysis program. Bearing configurations with 10 and 8 foils were identified as having the potential to exceed the performance of the 12-foil GTCP165 APU bearing. A total of six bearing configurations were tested, two ambient temperature configurations using Teflon-S coated foils with a chrome-plated journal, and four with high-temperature foil and journal coatings. The high-temperature bearings used foil coatings Kaman DES, Kaman DES au, Co-20 Ni, and TiC, all of which were run with a Kaman SCA-coated journal. Program goals were met with both ambient-temperature bearing configurations and Kaman SCA versus Kaman DES and TiC high-temperature configurations.

Descriptors:

• *Gas bearings
• *Journal bearings
• *Foils(Materials)
• *Protective coatings
• *Turbojet engines
• High temperature
• Test methods
• Plastic coatings
• Tetrafluoroethylene resins
• Plating
• Chromium compounds
• Oxides
• Gold
• Cobalt alloys
• Nickel alloys
• Titanium compounds
• Carbides
• Ceramic materials
• Composite materials

Subject Categories:

• Coatings, Colorants and Finishes
• Machinery and Tools
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE