Noise prediction for maneuvering rotorcraft

Kenneth Steven Brentner, Henry E. Jones

Research output: Contribution to conferencePaper

22 Citations (Scopus)

Abstract

This paper presents the initial work toward first- principles noise prediction for maneuvering rotors. Both the aeromechanical and acoustics aspects of the maneuver noise problem are discussed. The comprehensive analysis code. CAMRAD 2. was utilized to predict the time-dependent aircraft position and attitude, along with the rotor blade airloads and motion. The major locus of this effort was the enhancement of the acoustic code WOPWOP necessary to compute the noise from a maneuvering rotorcraft. Full aircraft motion, including arbitrary transient motion, is modeled together with arbitrary rotor blade motions. Noise from a rotorcraft in turning and descending flight is compared to level flight. A substantial increase in the rotor noise is found both for turning flight and during a transient maneuver. Additional enhancements to take advantage of parallel computers and clusters of workstations, in addition to a new compact-chordwise loading formulation, are also described.

Original languageEnglish (US)
StatePublished - Dec 1 2000
Event6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, United States
Duration: Jun 12 2000Jun 14 2000

Other

Other6th Aeroacoustics Conference and Exhibit, 2000
CountryUnited States
CityLahaina, HI
Period6/12/006/14/00

Fingerprint

rotary wing aircraft
noise prediction
turning flight
Rotors
rotor blades
maneuvers
Acoustic noise
Turbomachine blades
rotors
aircraft
Acoustics
Aircraft
flight
parallel computers
Computer workstations
acoustics
augmentation
workstations
loci
formulations

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

Cite this

Brentner, K. S., & Jones, H. E. (2000). Noise prediction for maneuvering rotorcraft. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
Brentner, Kenneth Steven ; Jones, Henry E. / Noise prediction for maneuvering rotorcraft. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
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Brentner, KS & Jones, HE 2000, 'Noise prediction for maneuvering rotorcraft' Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States, 6/12/00 - 6/14/00, .

Noise prediction for maneuvering rotorcraft. / Brentner, Kenneth Steven; Jones, Henry E.

2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.

Research output: Contribution to conferencePaper

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AB - This paper presents the initial work toward first- principles noise prediction for maneuvering rotors. Both the aeromechanical and acoustics aspects of the maneuver noise problem are discussed. The comprehensive analysis code. CAMRAD 2. was utilized to predict the time-dependent aircraft position and attitude, along with the rotor blade airloads and motion. The major locus of this effort was the enhancement of the acoustic code WOPWOP necessary to compute the noise from a maneuvering rotorcraft. Full aircraft motion, including arbitrary transient motion, is modeled together with arbitrary rotor blade motions. Noise from a rotorcraft in turning and descending flight is compared to level flight. A substantial increase in the rotor noise is found both for turning flight and during a transient maneuver. Additional enhancements to take advantage of parallel computers and clusters of workstations, in addition to a new compact-chordwise loading formulation, are also described.

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Brentner KS, Jones HE. Noise prediction for maneuvering rotorcraft. 2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.