Hybrid Model Fusion for Gas Turbine Engine Diagnostics and Prognostics

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NAS4-02038
Agency Tracking Number: 012685
Amount: $69,991.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
13029 Danielson Street, Suite 200, Poway, CA, 92064
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tom Brotherton
 Vice President, CTO
 (858) 679-4140
 tom.brotherton@iac-online.com
Business Contact
 Laura Goodrich
Title: Vice President, Contracts
Phone: (858) 679-4140
Email: laura.goodrich@iac-online.com
Research Institution
N/A
Abstract
In Phase I IAC, teamed with Pratt & Whitney and Luppold & Associates, developed and demonstrated a hybrid modeling approach to enhance diagnostics and prognostics performance on F-117 engines. The hybrid model fuses a physics-based model developed by Pratt & Whitney called STORM with an empirical model that uses neural networks to monitor and quantify unmodeled and/or mismodeled engine phenomena that corrupt STORM?s diagnostic outputs. The resulting hybrid model is called the enhanced STORM or eSTORM. In Phase I eSTORM was demonstrated to work extremely well for limited conditions when processing simulated engine data. In Phase II IAC proposes to develop a standalone system for real time implementation of a full F-117 engine eSTORM. The system will cover the full C-17 flight envelope. The system will include interfaces to accept data from the C-17 aircraft bus and will be capable of on-wing operation. The system will be demonstrated using real F-117 inputs running in a test bench environment. Though developed explicitly for an F-117 application, the hybrid modeling concept developed on this Phase II is generic and can be used for eSTORM development on all Pratt & Whitney military and commercial engines.

* Information listed above is at the time of submission. *

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