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", Portsmouth, VA
  • Robert F. Rau and Eric Greenwood, 2022, "A Dynamic Wake Model for Multirotor Aircraft"
  • 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
  • Damaris R Zachos, Lauren Weist, Kenneth S Brentner and Eric Greenwood, 2022, "Variation in Helicopter Noise During Approach Maneuvers"
  • 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"
  • 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