TY - GEN
T1 - Efficient active rotor concepts for in-plane noise reduction
AU - Corle, Ethan
AU - Schmitz, Sven
AU - Yang, Tianxiao
AU - Brentner, Kenneth S.
N1 - Publisher Copyright:
© 2015, by the American Institute.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85088746193&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85088746193&partnerID=8YFLogxK
U2 - 10.2514/6.2015-0789
DO - 10.2514/6.2015-0789
M3 - Conference contribution
AN - SCOPUS:85088746193
T3 - 23rd AIAA/AHS Adaptive Structures Conference
BT - 23rd AIAA/AHS Adaptive Structures Conference
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 23nd AIAA/AHS Adaptive Structures Conference 2015
Y2 - 5 January 2015 through 9 January 2015
ER -