Principal Investigator

Carl H Gerhold
NASA Langley Research Center
Co-investigators / Team Members: 
Michael G. Jones, NASA Langley Research Center
Dawnielle Farrar, Applied Physics Laboratory, Johns Hopkins University

PhD, Purdue University, 1974
M.S. (Mechanical Engineering), Purdue University, 1972
B.S. (Mechanical Engineering), Ohio Northern University, 1970

Senior Research Scientist, NASA Langley Research Center, 1989-Present
Associate Professor of Mechanical Engineering, Texas A& M University, 1978-1989 Application Engineer, Burgess Industries, 1975-1978
Acoustics Consultant, Dames & Moore, Inc, 1974-1975

Carl Gerhold came to NASA in 1989 after a career at Texas A&M University, where he taught and led research in the Mechanical Engineering Department, specializing in Mechanical Vibrations and Acoustics. Since coming to NASA Langley Research Center, he has concentrated on developing active and passive noise control technologies. Carl led development of the Curved Duct Test Rig, an aircraft engine duct simulator that incorporates a unique multi-channel control system to generate higher order modes in the duct.  The Seedling Fund project is of particular interest because the aim is to update a proven noise control technology by using adaptive materials to expand the noise control bandwidth. Carl retired from active civil service at NASA in July of 2014.


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