Efficient active rotor concepts for in-plane noise reduction

Ethan Corle, Sven Schmitz, Tianxiao Yang, Kenneth S. Brentner

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

1 Scopus citations

Abstract

Active rotor concepts have been shown to effectively target helicopter acoustics, performance, or vibrations. This work focuses on a conceptual integrated optimization scheme in which the Rotorcraft Comprehensive Analysis System (RCAS) is coupled to PSU-WOPWOP and an evolutionary algorithm to find trailing-edge flap deployment schedules that result in far-field in-plane noise reduction with the end goal of no performance penalty. A single-objective optimization is presented which demonstrates a 3.66 dB reduction in overall sound pressure level (OASPL) at a far-field observer with a performance penalty, as defined as an increase in rotor power required, of 10 percent. A multi-objective optimization is then presented that targets both OASPL and performance. A range of optimal deployment schedules are shown to result a 1-2 dB reduction in OASPL with a simultaneous power reduction of 4-6 percent.

Original languageEnglish (US)
Title of host publication23rd AIAA/AHS Adaptive Structures Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624103469
DOIs
StatePublished - 2015
Event23nd AIAA/AHS Adaptive Structures Conference 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name23rd AIAA/AHS Adaptive Structures Conference

Other

Other23nd AIAA/AHS Adaptive Structures Conference 2015
CountryUnited States
CityKissimmee
Period1/5/151/9/15

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Building and Construction

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