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Abstract for presentation:The Department of Defense has a goal to effectively design and upgrade all its aviation systems with minimal development cost and risk. One of the biggest risk factors for new designs comes from unexpected aerodynamic and dynamic behavior of the integrated vehicle during initial flight tests. The Army is tackling this problem head-on by developing new high-fidelity modeling and simulation software to identify and remedy potential problems early in the design cycle, well before a prototype vehicle undergoes its first flight test.  This talk will describe the Army’s new Helios software tool that use high-performance computers to accurately model a variety of complex and multidisciplinary problems in rotary-wing aerodynamics and structural dynamics. These same computational techniques also work for wind turbines and this talk will also show Helios simulations of wind turbines and wind farms. Finally, the talk will describe the design and implementation of a maintainable and extensible software development framework for the overall effort.


About the speaker:Dr. Strawn leads the Computational Aeromechanics Technical Area for the Army’s Aviation Development Directorate in Moffett Field, Calif. This group is responsible for the development and applications of advanced computational modeling tools for rotary-wing aeromechanics. Over the past 25 years, Strawn has led the development and application of such methods for a range of Army helicopter configurations including the CH-47 Chinook, the UH-60 Black Hawk and the OH-58 Kiowa.