RTO-MP-AVT-111 29 - 1 UNCLASSIFIED/UNLIMITED UNCLASSIFIED/UNLIMITED First-In-Flight Full-Scale Application of Active Flow Control: The XV-15 Tiltrotor Download Reduction Prof. Hassan M. Nagib and Dr. John W. Kiedaisch Illinois Institute of Technology MMAE Department 10 W. 32 nd St. Chicago, IL 60616 U.S.A. E-mail: nagib@iit.edu / kiedaisch@iit.edu Prof. Israel J. Wygnanski and Aaron D. Stalker University of Arizona AME Department 1130 N. Mountain Tucson, AZ 85721 U.S.A. E-mail: wygy@ame.arizona.edu / astalker@email.arizona.edu Tom Wood Bell Helicopter Textron 600 E. Hurst Blvd. Hurst, TX 76053 U.S.A. E-mail: TWood@bellhelicopter.textron.com Michael A. McVeigh Boeing Helicopters P.O. Box 16858 Philadelphia, PA 19142 U.S.A. E-mail: michael.a.mcveigh@boeing.com Paper presented at the RTO AVT Specialists’ Meeting on “Enhancement of NATO Military Flight Vehicle Performance by Management of Interacting Boundary Layer Transition and Separation”, held in Prague, Czech Republic, 4-7 October 2004, and published in RTO-MP-AVT-111.