Eric Greenwood

    • 149 Citations
    • 7 h-Index
    20072019
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    Research Output 2007 2019

    • 149 Citations
    • 7 h-Index
    • 11 Conference contribution
    • 9 Article
    • 6 Conference article
    • 2 Paper
    2019

    Dynamic replanning of low noise rotorcraft operations

    Greenwood, E., Jan 1 2019.

    Research output: Contribution to conferencePaper

    Acoustics
    Flight paths
    Costs
    Rotors
    Planning

    Regarding the perceptual significance and characterization of broadband components of helicopter source noise

    Christian, A., Caston, J. & Greenwood, E., Jan 1 2019.

    Research output: Contribution to conferencePaper

    Helicopters
    Discrete Fourier transforms
    Physics
    Modulation
    2018
    3 Citations (Scopus)
    Helicopters
    Identification (control systems)
    Physics
    Rotors
    Acoustic noise

    Effects of crosswind flight on rotor harmonic noise radiation

    Greenwood, E. & Sim, B. W., Jan 1 2018, In : Journal of Aircraft. 55, 5, p. 2137-2148 12 p.

    Research output: Contribution to journalArticle

    Helicopters
    Rotors
    Radiation
    Flight paths
    Vortex flow
    1 Citation (Scopus)

    Estimating helicopter noise abatement information with machine learning

    Greenwood, E., Jan 1 2018, In : Annual Forum Proceedings - AHS International. 2018-May

    Research output: Contribution to journalConference article

    Noise abatement
    Helicopters
    Learning systems
    Drag
    NASA
    2017
    1 Citation (Scopus)

    Helicopter flight procedures for community noise reduction

    Greenwood, E., Jan 1 2017, In : Annual Forum Proceedings - AHS International. p. 1-14 14 p.

    Research output: Contribution to journalConference article

    Noise abatement
    Helicopters
    Acoustic waves
    Acoustic noise
    Trajectories
    2016
    3 Citations (Scopus)

    Helicopter non-unique trim strategies for blade-vortex interaction (BVI) noise reduction

    Malpica, C., Greenwood, E. & Sim, B. W., Jan 1 2016, American Helicopter Society International - AHS Specialists' Conference on Aeromechanics Design for Vertical Lift 2016. American Helicopter Society International, p. 485-493 9 p. (American Helicopter Society International - AHS Specialists' Conference on Aeromechanics Design for Vertical Lift 2016).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Noise abatement
    Helicopters
    Vortex flow
    Fuselages
    Acoustics
    6 Citations (Scopus)

    Measurement and characterization of helicopter noise at different altitudes

    Watts, M. E., Greenwood, E. & Stephenson, J. H., Jan 1 2016, 72nd American Helicopter Society International Annual Forum 2016: Leveraging Emerging Technologies for Future Capabilities. American Helicopter Society, p. 19-33 15 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Acoustics
    Sea level
    Acoustic noise
    Mach number
    1 Citation (Scopus)

    Parametric investigation of the effect of hub pitching moment on blade vortex interaction (BVI) noise of an isolated rotor

    Malpica, C., Greenwood, E. & Sim, B., Jan 1 2016, 72nd American Helicopter Society International Annual Forum 2016: Leveraging Emerging Technologies for Future Capabilities. American Helicopter Society, p. 188-201 14 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Vortex flow
    Rotors
    Fuselages
    Aerodynamics
    Acoustics
    3 Citations (Scopus)

    The effects of ambient conditions on helicopter harmonic noise radiation: Theory and experiment

    Greenwood, E., Sim, B. W. & Douglas Boyd, D., Jan 1 2016, 72nd American Helicopter Society International Annual Forum 2016: Leveraging Emerging Technologies for Future Capabilities. American Helicopter Society, p. 1-18 18 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Radiation
    Sea level
    Rotors
    Experiments
    2015
    6 Citations (Scopus)

    A maneuvering flight noise model for helicopter mission planning

    Greenwood, E., Rau, R., May, B. & Hobbs, C., Jan 1 2015, In : Annual Forum Proceedings - AHS International. 1, January, p. 57-66 10 p.

    Research output: Contribution to journalArticle

    Helicopters
    Acoustics
    Planning
    Experiments
    Acoustic noise
    4 Citations (Scopus)

    A semiempirical noise modeling method for helicopter maneuvering flight operations

    Greenwood, E., Schmitz, F. H. & Sickenberger, R. D., Apr 1 2015, In : Journal of the American Helicopter Society. 60, 2, 022007.

    Research output: Contribution to journalArticle

    Helicopters
    Acoustic noise
    Vortex flow
    Acoustics
    Wind tunnels
    7 Citations (Scopus)

    Effects of vehicle weight and true versus indicated airspeed on BVI noise during steady descending flight

    Stephenson, J. H. & Greenwood, E., Jan 1 2015, In : Annual Forum Proceedings - AHS International. 1, January, p. 47-56 10 p.

    Research output: Contribution to journalArticle

    Vortex flow
    Sea level
    Takeoff
    Angle of attack
    Acoustic noise
    2014
    5 Citations (Scopus)

    Effects of ambient conditions on helicopter rotor source noise modeling

    Greenwood, E. & Schmitz, F. H., Jan 1 2014, In : Journal of Aircraft. 51, 1, p. 90-103 14 p.

    Research output: Contribution to journalArticle

    Helicopter rotors
    Helicopters
    Vortex flow
    Rotors
    Acoustics
    21 Citations (Scopus)

    Separation of main and tail rotor noise from ground-based acoustic measurements

    Greenwood, E. & Schmitz, F. H., Jan 1 2014, In : Journal of Aircraft. 51, 2, p. 464-472 9 p.

    Research output: Contribution to journalArticle

    Acoustic noise
    Microphones
    Rotors
    Acoustics
    Helicopters
    12 Citations (Scopus)

    Time frequency analysis of sound from a maneuvering rotorcraft

    Stephenson, J. H., Tinney, C. E., Greenwood, E. & Watts, M. E., Jan 1 2014, In : Journal of Sound and Vibration. 333, 21, p. 5324-5339 16 p.

    Research output: Contribution to journalArticle

    rotary wing aircraft
    maneuvers
    blade-vortex interaction
    sound pressure
    Acoustic waves
    2013
    3 Citations (Scopus)

    The effects of crosswind flight on rotor harmonic noise radiation

    Greenwood, E. & Sim, B. W., Sep 9 2013, 69th American Helicopter Society International Annual Forum 2013. p. 1414-1426 13 p. (Annual Forum Proceedings - AHS International; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Rotors
    Radiation
    Flight paths
    Vortex flow
    2012
    9 Citations (Scopus)

    A semi-empirical noise modeling method for helicopter maneuvering flight operations

    Greenwood, E., Schmitz, F. H. & Sickenberger, R. D., Aug 16 2012, 68th American Helicopter Society International Annual Forum 2012. p. 55-72 18 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Acoustics
    Acoustic noise
    Vortex flow
    Wind tunnels
    8 Citations (Scopus)

    Maneuver acoustic flight test of the Bell 430 Helicopter

    Watts, M. E., Snider, R., Greenwood, E. & Baden, J., Aug 16 2012, 68th American Helicopter Society International Annual Forum 2012. p. 24-40 17 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Acoustics
    Aircraft
    Microphones
    Acoustic noise
    2011
    3 Citations (Scopus)

    The effects of ambient conditions on helicopter rotor source noise modeling

    Greenwood, E. & Schmitz, F. H., Jul 28 2011, 67th American Helicopter Society International Annual Forum 2011. p. 47-65 19 p. (Annual Forum Proceedings - AHS International; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopter rotors
    Helicopters
    Acoustics
    Acoustic wave velocity
    Vortex flow
    2010
    4 Citations (Scopus)

    A parameter identification method for helicopter noise source identification and physics-based semi-empirical modeling

    Greenwood, E. & Schmitz, F. H., Nov 15 2010, In : Annual Forum Proceedings - AHS International. 4, p. 2715-2730 16 p.

    Research output: Contribution to journalConference article

    Helicopters
    Identification (control systems)
    Physics
    Rotors
    Vortex flow
    7 Citations (Scopus)

    A parameter identification method for helicopter noise source identification and physics-based semi-empirical modeling

    Greenwood, E. & Schmitz, F. H., Dec 1 2010, In : Annual Forum Proceedings - AHS International. 3, p. 1938-1953 16 p.

    Research output: Contribution to journalConference article

    Helicopters
    Identification (control systems)
    Physics
    Rotors
    Vortex flow
    2009

    Acoustics technical committee highlights: 2008-2009

    Greenwood, E., Sep 1 2009, In : Vertiflite. 55, 3, p. 36-45 10 p.

    Research output: Contribution to journalArticle

    Acoustics
    Rotors
    Fuselages
    Helicopters
    Impulse noise
    10 Citations (Scopus)

    Separation of main and tail rotor noise sources from ground-based acoustic measurements using time-domain de-Dopplerization

    Greenwood, E. & Schmitz, F. H., Dec 1 2009, 35th European Rotorcraft Forum 2009, ERF 2009. p. 101-112 12 p. (35th European Rotorcraft Forum 2009, ERF 2009; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Time measurement
    Acoustic noise
    Microphones
    Rotors
    Acoustics
    2007
    5 Citations (Scopus)

    Helicopter external noise radiation in turning flight: Theory and experiment

    Greenwood, E., Schmitz, F. H., Gopalan, G. & Sim, B. W. C., Dec 1 2007, AHS International 63rd Annual Forum - Proceedings - Riding the Wave of New Vertical Flight Technology. p. 1867-1888 22 p. (Annual Forum Proceedings - AHS International; vol. 3).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Microphones
    Radiation
    Experiments
    Flight paths
    1 Citation (Scopus)

    Helicopter external noise radiation in turning flight: Theory and experiment

    Greenwood, E., Schmitz, F. H., Gopalan, G. & Sim, B. W. C., Aug 20 2007, In : Annual Forum Proceedings - AHS International. 1, p. 45-66 22 p.

    Research output: Contribution to journalConference article

    Helicopters
    Microphones
    Radiation
    Experiments
    Flight paths
    14 Citations (Scopus)

    Measurement and characterization of helicopter noise in steady-state and maneuvering flight

    Schmitz, F. H., Greenwood, E., Sickenberger, R. D., Gopalan, G., Sim, B. W. C., Conner, D., Moralez, E. & Decker, W. A., Dec 1 2007, AHS International 63rd Annual Forum - Proceedings - Riding the Wave of New Vertical Flight Technology. p. 1974-1990 17 p. (Annual Forum Proceedings - AHS International; vol. 3).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Helicopters
    Microphones
    Acoustics
    Flight paths
    Global positioning system
    12 Citations (Scopus)

    Measurement and characterization of helicopter noise in steady-state and maneuvering flight

    Schmitz, F. H., Greenwood, E., Sickenberger, R. D., Gopalan, G., Sim, B. W. C., Conner, D., Moralez, E. & Decker, W. A., Aug 20 2007, In : Annual Forum Proceedings - AHS International. 1, p. 28-44 17 p.

    Research output: Contribution to journalConference article

    Helicopters
    Microphones
    Acoustics
    Flight paths
    Global positioning system