Improved Bearing Compartment Sealing for Gas Turbine Engines

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-07-M-2778
Agency Tracking Number: F071-172-0429
Amount: $99,255.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: AF071-172
Solicitation Number: 2007.1
Small Business Information
DUNS: 128738205
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Amitava Datta
 (401) 885-5064
Business Contact
 Amitava Datta
Title: President/Owner
Phone: (401) 885-5064
Research Institution
Carbon 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. *

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