NASA 1999 SBIR Phase I


PROPOSAL NUMBER 99-1 17.03-4290 (Chron: 991262 )

PROJECT TITLE

Compliant Foil Seal for Gas Turbine Engines


TECHNICAL ABSTRACT (LIMIT 200 WORDS)

Compliant surface non-contacting foil seals (CSFS) with the ability to operate under large rotor excursions, high temperatures and pressure differentials without loss of performance have the potential to make significant improvements in gas turbine engine performance, operability and reliability. However, high-temperature, long-life coatings, improved design analysis and scalable designs are needed to transition this technology to gas turbine engine seal applications. This program will assess the potential for integrating this technology into a General Aviation gas turbine engine, enhance existing analysis, develop preliminary conceptual seal designs, select candidate coating materials for use in component development testing under a Phase II effort, and identify the test equipment needed to fully characterize the combined foil-shaft-coating tribo-material system. Identified test equipment will include both component rigs for tribo-system and component performance assessment as well as a simulator for engine integration and system dynamics evaluations.


POTENTIAL COMMERCIAL APPLICATIONS

Applications exist in the General Aviation, commercial aviation, military and automotive sectors for this technology. In the GA and automotive sectors, applications include small gas turbine engines as well as turbochargers.

Commercial aviation applications include auxiliary power units and ground power carts, interstage seals may be applied across the entire range of commercial gas turbine engines. In the military sector, cruise missile and drone engines will benefit tremendously in simplicity and cost if a completely dry engine can be developed. Additionally, gas turbine powered pipeline compressors may also benefit from the development of compliant surface seals.


NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR (Name, Organization Name, Mail Address,

City/State/Zip)

Hooshang Heshmat

Mohawk Innovative Technology, Inc.

1037 Watervliet-Shaker Road

Albany , NY 12205 - 2033


NAME AND ADDRESS OF OFFEROR (Firm Name, Mail Address, City/State/Zip)

Mohawk Innovative Technology, Inc.

1037 Watervliet-Shaker Road

Albany , NY 12205 - 2033