Acoustic methodology for use in the conceptual design of rotorcraft

Valana Wells, J. V. Bona, A. T IV Glinka

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

Abstract

The paper describes a methodology for the simple prediction of noise generated by a tilt-rotor aircraft in hover and forward flight. In order to avoid the computational penalties associated with exact noise calculations, simplifications to the loading noise calculation and the blade-vortex interaction noise calculation have been introduced. The loading noise computation utilizes a constant chordwise loading assumption, while the BVI noise level is estimated through use of a dimensionless parameter, here termed `BVI number.' The acoustic computation code, designed as a module for use with VASCOMP, has two modes of operation, one as a quick estimator of acoustic amplitude produced by a tilt rotor with a typical rotor design and the other as a tool for rotor parametric design studies.

Original languageEnglish (US)
Title of host publicationAnnual Forum Proceedings - American Helicopter Society
PublisherAmerican Helicopter Soc
Pages259-265
Number of pages7
Volume1
StatePublished - 1996
EventProceedings of the 1996 52nd Annual Forum. Part 1 (of 3) - Washington, DC, USA
Duration: Jun 4 1996Jun 6 1996

Other

OtherProceedings of the 1996 52nd Annual Forum. Part 1 (of 3)
CityWashington, DC, USA
Period6/4/966/6/96

ASJC Scopus subject areas

  • Aerospace Engineering
  • Transportation

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