University of Minnesota
Aerospace Engineering and Mechanics
Spring 1998 Seminar Series
Control of Aerospace Engines
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
Refreshments served after the seminar in
227 Akerman Hall.
Disability accomodations provided upon request.
Audrey Stark-Evers, Senior Secretary,