A gas-operated bearing damper for turbomachinery -- Theoretical predictions versus experimental measurements. Part 2: Experimental results and comparison with theory

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2815461· OSTI ID:137091

Sundararajan, P; Vance, J M ^[1]

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1. Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering

This is the second of two papers described results of a research project directed at developing a gas-operated vibration damper for high-temperature turbomachinery applications. This paper presents the experimental measurements made on a gas damper hardware and compares them with the theoretical predictions given in Part 1. It is found that the isentropic theoretical model predicts the damper characteristics quite well. A maximum damping of 2,310 N-s/m (13.2 lb-s/in.) was measured at a natural frequency of 118 Hz using the present design and the results suggest that significantly higher damping levels are possible with design modifications.

• Sponsoring Organization: USDOE
• OSTI ID: 137091
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 4 Vol. 117; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
AIRCRAFT
DAMPING
GAS TURBINE ENGINES
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS