Enhanced Carbon Face Seals for Rotorcraft Drive Systems

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911W6-13-C-0003
Agency Tracking Number: A122-076-0375
Amount: $99,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2012
Solicitation Year: 2012
Solicitation Topic Code: A12-076
Solicitation Number: 2012.2
Small Business Information
Luna Innovations Incorporated
VA, Suite 400, Roanoke, VA, 24016-4692
DUNS: 627132913
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Adam Goff
 Engineer
 (434) 220-2513
 goffa@lunainnovations.com
Business Contact
 Shirley Evans
Title: Contract Administrator
Phone: (540) 961-6724
Email: submissions302@lunainnovations.com
Research Institution
 Stub
Abstract
Seals currently used for rotorcraft gearbox drive systems suffer from a high failure rate. Seals must prevent lubricant from escaping while under operation. Several materials are available for the seals, including carbon, elastomer, and ceramic, and all must withstand extreme shaft speeds (5,000-13,000 RPM) and temperatures (500 degrees F). Carbon face seals, which are predominantly used in rotorcraft either individually or in a magnetic seal assembly, can exhibit short lifetimes due to a variety of factors including debris entrapment at the seal interface, oxidation associated with incompatible lubricating oils and/or contaminants, and misalignment during installation. The time and manpower required to identify seal failures and replace seals is extremely costly and reduces fleet availability. Luna Innovations proposes an enhanced carbon face seal that will enhance seal lifetime and reliability. Modifications to the seal material chemistry and morphology will lead to higher durability and lower failure rate at comparable performance. The solution will be based significantly on previous experience with high performance carbon composites. The Phase I will involve proof-of-concept demonstration through material fabrication, optimization, testing, and collaboration with existing material suppliers, seal assembly manufacturers, and prime contractors.

* information listed above is at the time of submission.

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