Accession Number:

ADA235613

Title:

Investigation into the Failure Casue of a Double Acting, Leading Edge Groove, Tilting Pad Thrust Bearing

Descriptive Note:

Final rept. Feb-Aug 1990

Corporate Author:

WRIGHT RESEARCH AND DEVELOPMENT CENTER WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Peterson, Brian K.

Report Date:

1990-10-01

Pagination or Media Count:

56.0

Abstract:

This report describes the results of bench tests simulating operation and failure of a thrust bearing used in a gas turbine engine compressor development test rig. The bearing was a double acting, tilting pad with offset pivot, leading edge groove configuration using an AMS 4928 titanium collar and C18200 copper-chrome alloy pads with a No. 2 babbitt face. The bench tests successfully simulated the bearing failure and demonstrated a materials incompatibility. This was supported by visual examination, scanning electron microscopy and X-ray energy spectroscopy. A comparison of the bench test results to the compressor rig bearing failure is provided to support the report conclusions.

Descriptors:

• *FAILURE(MECHANICS)
• *THRUST BEARINGS
• ADHESION
• GAS TURBINES
• LEADING EDGES
• FRICTION
• GROOVING
• LUBRICATION
• TITANIUM ALLOYS
• COMPRESSOR COMPONENTS
• ABRASION

Subject Categories:

• Machinery and Tools
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE