Photo of Eric Greenwood

Eric Greenwood

Assistant Professor

Affiliation(s):

  • Aerospace Engineering
  • Center for Acoustics and Vibration
  • Acoustics

229E Hammond Building

eric.greenwood@psu.edu

814-863-9712

 
 

 

Education

  • BS, Mechanical Engineering, Rochester Institute of Technology, 2005
  • MS, Aerospace Engineering, University of Maryland, 2008
  • Ph D, Aerospace Engineering, University of Maryland, 2011

Publications

Journal Articles

  • Eric Greenwood, Kenneth S Brentner, Robert Rau and Ze Feng Ted Gan, 2022, "Challenges and Opportunities for Low Noise Electric Aircraft", International Journal of Aeroacoustics, 27, (5-7), pp. 66
  • James H Stephenson, Michael E Watts, Eric Greenwood and Kyle A Pascioni, 2022, "Development and Validation of Generic Maneuvering Flight Noise Abatement Guidance for Helicopters", Journal of the American Helicopter Society, 67, (1), pp. 12
  • Eric Greenwood and Robert F Rau, 2020, "A Maneuvering Flight Model for Helicopter Mission Planning", Journal of the American Helicopter Society
  • Eric Greenwood and Ben W Sim, 2018, "Effects of Crosswind Flight on Rotor Harmonic Noise Radiation", Journal of Aircraft, 55, (5), pp. 2137-2148
  • Eric Greenwood and Fredric H Schmitz, 2018, "A Parameter Identification Method for Helicopter Noise Source Identification and Physics-Based Semiempirical Modeling", Journal of the American Helicopter Society, 63, (3), pp. 1414-1426
  • Eric Greenwood, Fredric H Schmitz and Richard D Sickenberger, 2015, "A Semiempirical Noise Modeling Method for Helicopter Maneuvering Flight Operations", Journal of the American Helicopter Society, 60, (2), pp. 1-13
  • James H Stephenson, Charles Tinney, Eric Greenwood and Michael E Watts, 2014, "Time frequency analysis of sound from a maneuvering rotorcraft", Journal of Sound and Vibration, 333, (21), pp. 5324-5339
  • Eric Greenwood and Fredric H Schmitz, 2014, "Separation of Main and Tail Rotor Noise from Ground-Based Acoustic Measurements", Journal of Aircraft
  • Eric Greenwood and Fredric H. Schmitz, 2014, "Effects of Ambient Conditions on Helicopter Rotor Source Noise Modeling", Journal of Aircraft, 51, (1), pp. 90-103

Conference Proceedings

  • Vitor Tumelero Valente, Eric N Johnson and Eric Greenwood, 2022, "Implementation of a Phase Synchronization Algorithm for Multirotor UAVs"
  • Eric Greenwood and Nicholas Blaise Konzel, 2022, "Measurement and Characterization of Multirotor Unmanned Aerial System Noise"
  • Ze Feng Gan, Kenneth S Brentner and Eric Greenwood, 2022, "Time Variation of Helicopter Rotor Broadband Noise", pp. 2914
  • Robert F. Rau and Eric Greenwood, 2022, "A Dynamic Wake Model for Multirotor Aircraft"
  • Bhaskar Mukherjee, Kenneth S Brentner, Eric Greenwood, Jean-Pierre Theron and Joseph F Horn, 2022, "An Investigation of Piloting and Flight Control Strategies on Generic eVTOL Noise"
  • Andrew Christian, Randall Ali and Eric Greenwood, 2022, "An n-order hold approach for fractional-delay interpolation in auralization", The Journal of the Acoustical Society of America, Acoustical Society of America, 151, (4), pp. A188--A188
  • Nicholas Blaise Konzel and Eric Greenwood, 2022, "Ground-based Acoustic Measurements of Small Multirotor Aircraft"
  • Joel Sundar Rachaprolu and Eric Greenwood, 2022, "Helicopter Noise Source Separation Using an Order Tracking Filter"
  • Damaris R Zachos, Lauren Weist, Kenneth S Brentner and Eric Greenwood, 2022, "Variation in Helicopter Noise During Approach Maneuvers"
  • Raja Akif Raja Zahirudin, Daniel Weitsman, Eric Greenwood and Jose Palacios, 2021, "The Development of a Coaxial Acoustics Test System for Rotor Noise"
  • David Coleman, Atanu Halder, Farid Saemi, Carl Runco, Hunter Denton, Bochan Lee, Vishaal Subramanian, Eric Greenwood, Vinod Lakshminarayan and Moble Benedict, 2021, "Development of "Aria," a Compact, Ultra-Quiet Personal Electric Helicopter"
  • Bhaskar Mukherjee, Ze Feng Ted Gan, Jean-Pierre Theron, Kenneth S Brentner, Eric Greenwood and Joseph F Horn, 2021, "A New Distributed Electric Propulsion Aircraft Simulation Tool for Coupled Flight Dynamics, Free Wake, and Acoustic Predictions"
  • Daniel Weitsman and Eric Greenwood, 2021, "Parametric Study of eVTOL Rotor Acoustic Design Trades"
  • Ze Feng Ted Gan, Kenneth S Brentner and Eric Greenwood, 2021, "Time Variation of Rotor Broadband Noise", Vertical Flight Society
  • Kyle A Pascioni, Eric Greenwood, Michael E Watts, Charles D Smith and James H Stephenson, 2020, "Medium-Sized Helicopter Noise Abatement Flight Test", Vertical Flight Society
  • James H Stephenson, Michael E Watts, Eric Greenwood and Kyle A Pascioni, 2020, "Development and Validation of Generic Maneuvering Flight Noise Abatement Guidance for Helicopters", Vertical Flight Society
  • Anna C. Trujillo, Eric Greenwood and Daniel R. Hill, 2020, "Helicopter Noise Footprint Depiction During Simulated Flight for Training", 1212 AISC, pp. 554-561
  • Eric Greenwood, 2019, "Dynamic replanning of low noise rotorcraft operations"
  • Andrew Christian, Jarrett Caston and Eric Greenwood, 2019, "Regarding the perceptual significance and characterization of broadband components of helicopter source noise"
  • Eric Greenwood, 2018, "Estimating helicopter noise abatement information with machine learning", 2018-May
  • Eric Greenwood, 2017, "Helicopter flight procedures for community noise reduction", pp. 1-14
  • Michael E Watts, Eric Greenwood and James H Stephenson, 2016, "Measurement and characterization of helicopter noise at different altitudes", 1, pp. 19-33
  • Carlos Malpica, Eric Greenwood and Ben W Sim, 2016, "Parametric investigation of the effect of hub pitching moment on blade vortex interaction (BVI) noise of an isolated rotor", 1, pp. 188-201
  • Eric Greenwood, Ben W Sim and D Douglas Boyd, 2016, "The effects of ambient conditions on helicopter harmonic noise radiation: Theory and experiment", 1, pp. 1-18
  • Carlos A Malpica, Eric Greenwood and Ben W Sim, 2016, "Helicopter non-unique trim strategies for blade-vortex interaction (BVI) noise reduction", pp. 485-493
  • Eric Greenwood, Robert Rau, Benjamin May and Christopher Hobbs, 2015, "A maneuvering flight noise model for helicopter mission planning", 1, (January), pp. 57-66
  • James H Stephenson and Eric Greenwood, 2015, "Effects of vehicle weight and true versus indicated airspeed on BVI noise during steady descending flight", 1, (January), pp. 47-56
  • Eric Greenwood and Ben W. Sim, 2013, "The effects of crosswind flight on rotor harmonic noise radiation", 2, pp. 1414-1426
  • Eric Greenwood, Fredric H. Schmitz and Richard D. Sickenberger, 2012, "A semi-empirical noise modeling method for helicopter maneuvering flight operations", 1, pp. 55-72
  • Michael E. Watts, Royce Snider, Eric Greenwood and Joel Baden, 2012, "Maneuver acoustic flight test of the Bell 430 Helicopter", 1, pp. 24-40
  • Eric Greenwood and Fredric H. Schmitz, 2011, "The effects of ambient conditions on helicopter rotor source noise modeling", 1, pp. 47-65
  • Eric Greenwood and Fredric H. Schmitz, 2010, "A parameter identification method for helicopter noise source identification and physics-based semi-empirical modeling", 3, pp. 1938-1953
  • Eric Greenwood and Fredric H. Schmitz, 2009, "Separation of main and tail rotor noise sources from ground-based acoustic measurements using time-domain de-Dopplerization", 1, pp. 101-112
  • Eric Greenwood, Fredric H. Schmitz, Gaurav Gopalan and Ben Wel-C Sim, 2007, "Helicopter external noise radiation in turning flight: Theory and experiment", 3, pp. 1867-1888
  • Fredric H. Schmitz, Eric Greenwood, Richard D. Sickenberger, Gaurav Gopalan, Ben Wel-C Sim, David Conner, Ernesto Moralez and William A. Decker, 2007, "Measurement and characterization of helicopter noise in steady-state and maneuvering flight", 3, pp. 1974-1990

Magazines/Trade Publications

Other

Research Projects

Honors and Awards

  • Alfred Gessow Best Paper Award, Vertical Flight Society, December 2020
  • Fran├žois-Xavier Bagnoud Award, Vertical Flight Society, May 2018
  • Early Career Achievement Medal, National Aeronautics and Space Administration, June 2016

Service

Service to Penn State:

Service to External Organizations:

  • Participation in or Service to Professional and Learned Societies, Chairperson, Fly Neighborly / Environmental Committee, Helicopter Association International, 2022
  • Participation in or Service to Professional and Learned Societies, Committee Member, Acoustics Technical Committee, Vertical Flight Society, May 2021
  • Participation in or Service to Professional and Learned Societies, Committee Member, Fly Neighborly / Environmental Committee, Helicopter Association International, 2017 - 2022
 


 

About

Founded in 1965, Penn State's Graduate Program in Acoustics has become the leading resource for graduate education in acoustics in the United States. The interdisciplinary program leads to the degrees: Master of Engineering in Acoustics (M.Eng.), Master of Science in Acoustics (M.S.), and Doctor of Philosophy in Acoustics (Ph.D.)

Graduate Program in Acoustics

College of Engineering

The Pennsylvania State University

201 Applied Science Building

University Park, PA 16802