• Technical Director, Virginia Tech Airworthiness Center (VTAC)
  • Co-Chair, NATO Science and Technology Organization (STO), Air Vehicle Technology (AVT) Panel, STO-AVT Workshop, “AVT-209: Energy Efficient Configurations and Concepts of Operation,” Instituto Superior Tecnico, Lisbon, Portugal, 26–28 October 2012
  • General Chair, AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Victoria, BC, Sept 10–12, 2008
  • Chair, AIAA Multidisciplinary Design Optimization Technical Committee, 2003–2005
  • Technical Chair, AIAA/USAF/NASA/ISSMO Multidisciplinary Analysis and Optimization Conference, St. Louis, MO, 1998