Improved Bearing Compartment Sealing for Gas Turbine Engines
Department of Defense
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Small Business Information
ADVANCED COMPONENTS & MATERIALS, INC.
1360 HIGH HAWK ROAD, EAST GREENWICH, RI, 02818
Socially and Economically Disadvantaged:
AbstractCarbon seals generlly used for bearing compartments will incrasingly become unsuitable for future gas turbine engines with higher buffer air temperatures, higher pressur and rotor surface speeds.Phase I effort will focus on a synergistic approach including advanced materials and design.Three materials including a (Ti,Mo)(C,N) cermet, B-C composite and a current high temperature grade carbon MAT-1200 will be characterized for wear, oxidation resistance, impact strength and corrosion resistance in bearing oil. Both (Ti,Mo)(C,N)cermet and B-C composite have a much lower dry running wear rate, superior thermal stability and impact resistance compared to carbon.Advanced materials will be complemented with two non-contacting film riding design concepts; one based on hydrosttic arch-bound and another radial groove circumferential seal to furher minimize wear and degradation of leakage performance. Based on Phase I results, Phase II will focus on further design optimization using a comprehensive design code and performance testing of the down-selected design and material combination.
* information listed above is at the time of submission.