The Challenges and Possibilities of a Truly Quiet Helicopter

Thursday, March 24, 2011 3:30 p.m. in WRW 113 Professor Frederic H. Schmitz Department of Aerospace Engineering The University of Maryland http://www.aero.umd.edu/facstaff/fac-profiles/schmitz-fredric.html A short history of the successes and the failings of Vietnam era efforts to reduce helicopter noise are briefly reviewed and the major sources of noise ranked.  A movie showing the typical in-flight…