University of Minnesota
Aerospace Engineering and Mechanics
Spring 1998 Seminar Series

Control of Aerospace Engines

Sanjay Garg
NASA Lewis Research Center


With the increased emphasis on aircraft safety, enhanced performance and affordability, and the need to reduce the environmental impact of aircraft, there are many new challenges being faced by the designers of aircraft propulsion systems. The Controls and Dynamics Technology Branch at NASA Lewis Research Center in Cleveland, Ohio, is leading and participating in various projects in partnership with the U.S. aerospace industry and academia to develop advanced controls technologies that will help meet these challenges.

In the past, the control design problem has been to transition the operating point of the engine from one set point to another in a most expedient manner without compromising safety. With the advancements in computer technologies, the component designers are beginning to realize the potential of "active control technologies" in helping them meet more stringent design requirements. Examples of these active technologies include Active Clearance Control, Active Stall Control, and Active Combustor Control. Implementation of these concepts for a "Control Configured Engine" requires advancements in the area of robust control synthesis techniques and automated diagnostics, and development of new hardware such as smart sensors and actuators. Integration with the overall engine system will require moving from the current analog control systems to distributed control architectures. This presentation provides an overview of the emerging technologies and challenges in control of aircraft propulsion systems from the perspective of the Controls and Dynamics Technology Branch at NASA Lewis Research Center.

Friday, April 10, 1998
209 Akerman Hall
2:30-3:30 p.m.

Refreshments served after the seminar in 227 Akerman Hall.
Disability accomodations provided upon request.
Contact Audrey Stark-Evers, Senior Secretary, 625-8000.