Aeroacoustic study of lift offset coaxial rotor using free wake analysis

Kalki Sharma; Kenneth S. Brentner; Zhongqi Jia; Seongkyu Lee

Aeroacoustic study of lift offset coaxial rotor using free wake analysis

Kalki Sharma, Kenneth S. Brentner, Zhongqi Jia, Seongkyu Lee

Aerospace Engineering

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

This paper performs aerodynamic and acoustic analysis on a coaxial rotor system based on the XH-59A coaxial helicopter. The aerodynamic analysis is performed in RCAS using free wake modeling, and the acoustic prediction is performed with PSU-WOPWOP, which utilizes Farassat’s Formualation 1A of the Ffowcs Williams-Hawkings equation. The coaxial rotor system is analyzed for forward flight speeds of 100 knots and 150 knots. For each case the rotor shaft angle and the distribution of loading is varied to understand the impact on the rotor noise and the aerodynamic environment of the rotor system. The aerodynamic environment is analyzed by wake and blade load visualization, and the noise is computed on a hemi-spherical grid 10 rotor radii from the coaxial rotor system.

Original language	English (US)
State	Published - Jan 1 2019
Event	Vertical Flight Society's 75th Annual Forum and Technology Display - Philadelphia, United States Duration: May 13 2019 → May 16 2019

Conference

Conference	Vertical Flight Society's 75th Annual Forum and Technology Display
Country/Territory	United States
City	Philadelphia
Period	5/13/19 → 5/16/19

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Control and Systems Engineering

Cite this

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title = "Aeroacoustic study of lift offset coaxial rotor using free wake analysis",

abstract = "This paper performs aerodynamic and acoustic analysis on a coaxial rotor system based on the XH-59A coaxial helicopter. The aerodynamic analysis is performed in RCAS using free wake modeling, and the acoustic prediction is performed with PSU-WOPWOP, which utilizes Farassat{\textquoteright}s Formualation 1A of the Ffowcs Williams-Hawkings equation. The coaxial rotor system is analyzed for forward flight speeds of 100 knots and 150 knots. For each case the rotor shaft angle and the distribution of loading is varied to understand the impact on the rotor noise and the aerodynamic environment of the rotor system. The aerodynamic environment is analyzed by wake and blade load visualization, and the noise is computed on a hemi-spherical grid 10 rotor radii from the coaxial rotor system.",

author = "Kalki Sharma and Brentner, {Kenneth S.} and Zhongqi Jia and Seongkyu Lee",

year = "2019",

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day = "1",

language = "English (US)",

note = "Vertical Flight Society's 75th Annual Forum and Technology Display ; Conference date: 13-05-2019 Through 16-05-2019",

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TY - CONF

T1 - Aeroacoustic study of lift offset coaxial rotor using free wake analysis

AU - Sharma, Kalki

AU - Brentner, Kenneth S.

AU - Jia, Zhongqi

AU - Lee, Seongkyu

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This paper performs aerodynamic and acoustic analysis on a coaxial rotor system based on the XH-59A coaxial helicopter. The aerodynamic analysis is performed in RCAS using free wake modeling, and the acoustic prediction is performed with PSU-WOPWOP, which utilizes Farassat’s Formualation 1A of the Ffowcs Williams-Hawkings equation. The coaxial rotor system is analyzed for forward flight speeds of 100 knots and 150 knots. For each case the rotor shaft angle and the distribution of loading is varied to understand the impact on the rotor noise and the aerodynamic environment of the rotor system. The aerodynamic environment is analyzed by wake and blade load visualization, and the noise is computed on a hemi-spherical grid 10 rotor radii from the coaxial rotor system.

AB - This paper performs aerodynamic and acoustic analysis on a coaxial rotor system based on the XH-59A coaxial helicopter. The aerodynamic analysis is performed in RCAS using free wake modeling, and the acoustic prediction is performed with PSU-WOPWOP, which utilizes Farassat’s Formualation 1A of the Ffowcs Williams-Hawkings equation. The coaxial rotor system is analyzed for forward flight speeds of 100 knots and 150 knots. For each case the rotor shaft angle and the distribution of loading is varied to understand the impact on the rotor noise and the aerodynamic environment of the rotor system. The aerodynamic environment is analyzed by wake and blade load visualization, and the noise is computed on a hemi-spherical grid 10 rotor radii from the coaxial rotor system.

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UR - http://www.scopus.com/inward/citedby.url?scp=85069491392&partnerID=8YFLogxK

M3 - Paper

T2 - Vertical Flight Society's 75th Annual Forum and Technology Display

Y2 - 13 May 2019 through 16 May 2019

ER -

Aeroacoustic study of lift offset coaxial rotor using free wake analysis

Abstract

Conference

All Science Journal Classification (ASJC) codes

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