[en] This paper aims with the characterization of ceramic matrix composites for bearing applications in LOX. First, compatibility tests have been performed to assume the safety and feasibility of further research operations. Then tribology tests were made on a pin-on-disc apparatus using LOX as working environment. The measurement of friction and wear allowed a comparison between different kinds of CMC and steel 440C materials. As a logical approach, a real geometry test rig is now being built up. The design of a hybrid journal bearing has been finished and the manufacturing of the rig components started.
Disciplines :
Mechanical engineering
Author, co-author :
Bozet, Jean-Luc ; Université de Liège - ULiège > Département de chimie appliquée > Chimie appliquée - Cryotribologie
NELIS, M.
LEUCHS, Martin; MAN Technologie AG, Franz-Josef-Strauss-Strasse 5, 86153 Augsburg (DE)
BICKEL, M.; MAN Technologie AG, Franz-Josef-Strauss-Strasse 5, 86153 Augsburg (DE)
Language :
English
Title :
Tribology of SiC/SiC Ceramic Matrix Composites in Liquid Oxygen in Relation to the Design of Hydrostatic Bearings
Kochanowski, W., and Tillack, P., 'New pump bearing materials prevent damage to tubular casing pumps'. VDI-Berichte No. 1421, 1998, pp. 227-42.
Grease, G., Lyda, R., Park, J., and Minick, A., 'Design and test results of an advanced liquid hydrogen turbo-pump', 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conf., Los Angeles, 1999, paper AIAA 99-2190.
Bickel, M., and Leuchs, M., 'Ceramic matrix composites - a new material in tribological applications', MAN report, November 1997.
Mühlratzer, K.H., and Pfeiffer, H., 'Development of a new cost-effective ceramic composite for re-entry heat shield applications', 46th Int. Astronautical Congr., Oslo, 1995, paper IAF-95-I.3.01.
Dogigli, M., Weihs, H., Wildenrotter, K., and Lange, H., New high-temperature ceramic bearing for space vehicles', 51st Int. Astronautical Congr., Rio de Janeiro, 2000, paper IAF-00-I.3.04.
Frölich, H.K., 'Development of an internal oxidation protection system for C/SiC', Final report on the FESTIP programme Technology Development in Materials for Reusable Launch Vehicles, Doc. No. FTM-MAN-FIR-4000-001.
Bozet, J.L., et al., 'Tribologie en oxygène liquide, matériaux et techniques', No. Hors Série, SIRPE, 1999.
Bozet, J.L., and Nélis, M., 'The regularity of the friction coefficient, different means of characterization', Eurotrib, Budapest, 1993.
Frêne, J., Nicolas, D., et al., 'Paliers et Butées', Collection des Études et Recherches d'Électricité de France, Eyrolles, 1990.
Constantinescu, V.N., 'Basic relationships in turbulent lubrication and their extension to include thermal effects', J. Lubr, Technol., April (1973) 147-54.
Scharrer, J.K., Tellier, J., and Hibbs, R., 'A study of the transient performance of hydrostatic journal bearings: Part II - experimental results', STLE/ASME Tribology Conf., St. Louis, Missouri, 14-16 October 1991.
NIST Standard Reference Database 12, Copyright 1986-1992 by US Department of Commerce.
