Measurements of rotordynamic coefficients of hybrid bearings with (a) a plugged orifice, (b) a worn land surface Academic Article

abstract

• Abstract Test results are presented for the rotordynamic coefficients of a hybrid bearing that is representative of bearings for liquid-rocket-engine turbopump applications. The bearing is tested in the following two degraded conditions: (a) one of five orifices plugged, and (b) a locally enlarged clearance to simulate a worn condition. Test data are presented at 24,600 rpm, with supply pressures of 4.0, 5.5, and 7.0 MPa, and eccentricity ratios from 0.1 to 0.5 in 0.1 increments. Overall, the results suggest that neither a single plugged orifice nor significant wear on the bearing land will disable a well-designed hybrid bearing. These results do not speak to multiple plugged orifices and are not an endorsement for operations without filters to prevent plugging orifices.

authors

• Childs, Dara

published proceedings

• JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME

author list (cited authors)

• Laurant, F., & Childs, D. W.

citation count

• 26

complete list of authors

• Laurant, F||Childs, DW

publication date

• April 2002

publisher

• ASME International  Publisher

published in

• Journal of Engineering for Gas Turbines and Power: Transactions of the ASME  Journal

keywords

• 40 Engineering
• 4017 Mechanical Engineering

Digital Object Identifier (DOI)

• 10.1115/1.1403461

start page

• 363

end page

• 368

volume

• 124

issue

• 2

URL

• http://dx.doi.org/10.1115/1.1403461