Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Menachem Rafaelof"'
Publikováno v:
KONA Powder and Particle Journal, Vol 17, Iss 0, Pp 147-162 (2014)
This work is concerned with the development of a computational fluid dynamics model for a two-phase, turbulent, swirling flow produced by stationary guide vanes. The swirling flow causes separation of particles in the air stream and hence the device
Externí odkaz:
https://doaj.org/article/393b3122497048e6bf379806fe736e16
Autor:
Matthew Boucher, Menachem Rafaelof, Durand Begault, Andrew Christian, Siddhartha Krishnamurthy, Stephen Rizzi
Publikováno v:
SAE Technical Paper Series.
This paper describes a psychoacoustic test in the Exterior Effects Room (EER) at the NASA Langley Research Center. The test investigated the degree to which sound quality metrics (sharpness, tonality, etc.) are predictive of annoyance to notional sou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d009154f7759c5a4e8b9bfc97de0d76c
https://doi.org/10.4271/2023-01-1107
https://doi.org/10.4271/2023-01-1107
Autor:
Kyle Wendling, Menachem Rafaelof
Publikováno v:
Journal of the Audio Engineering Society. 69:672-682
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd68ad17be29d3547f39ece5f4bded37
https://doi.org/10.17743/jaes.2021.0021
https://doi.org/10.17743/jaes.2021.0021
Autor:
Menachem Rafaelof, Stephen A. Rizzi
Publikováno v:
INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 263:450-461
In contrast to most commercial air traffic today, vehicles serving the urban air mobility (UAM) market are anticipated to operate in communities close to the public at large. The approved model for assessing environmental impact of air traffic action
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8f3e346283767e8ae42a35cdb6dcef
https://doi.org/10.3397/in-2021-1482
https://doi.org/10.3397/in-2021-1482
Publikováno v:
INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 263:474-485
A new software tool called AIRNOISEUAM is introduced that models the noise exposure of Urban Air Mobility (UAM) operations. Given relevant UAM aircraft performance models, mission profiles, and Noise-Power-Distance data, AIRNOISEUAM predicts the nois
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e94ef3cb34157e65e653a779ae971e31
https://doi.org/10.3397/in-2021-1488
https://doi.org/10.3397/in-2021-1488
Autor:
Stephen A. Rizzi, Menachem Rafaelof
Publikováno v:
AIAA SCITECH 2022 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2919df63d1bb7a14d114d1dd8c304090
https://doi.org/10.2514/6.2022-2167
https://doi.org/10.2514/6.2022-2167
Publikováno v:
Journal of the American Helicopter Society. 64:1-11
The low frequency content of rotorcraft noise allows it to be heard over great distances. This factor contributes to the disruption of natural quiet in national parks and wilderness areas, and can lead to annoyance in populated areas. Further, it can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::828a72f4d9eb5f1f39039dbca28edc55
https://doi.org/10.4050/jahs.64.012009
https://doi.org/10.4050/jahs.64.012009
Autor:
Matthew Boucher, Andrew Christian, Menachem Rafaelof, Kevin Shepherd, Stephen A. Rizzi, James Stephenson
Publikováno v:
The Journal of the Acoustical Society of America. 151:A221-A221
A recent psychoacoustic test at NASA Langley generated a dataset of 3-alternative forced-choice responses for 40 subjects that measured the audibility of a tone complex in a shaped broadband masker. The task was completed by four subjects at a time i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9b0f37cfa007caf546e62998b1244b8
https://doi.org/10.1121/10.0011117
https://doi.org/10.1121/10.0011117
Autor:
Menachem Rafaelof, Andrew Schroeder
Publikováno v:
Proceedings of Meetings on Acoustics.
Predicting human response to complex sound is a nontrivial task. Besides large differences among subjects and practically infinite types of stimuli, human response to sound is typically quantified by a few parameters having nonlinear behavior. Still,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df9ee1f0df85e5d73e42ac948233fe85
https://doi.org/10.1121/2.0000967
https://doi.org/10.1121/2.0000967
Publikováno v:
23rd AIAA/CEAS Aeroacoustics Conference.
A psychoacoustic test was performed using simulated sounds from a distributed electric propulsion aircraft concept to help understand factors associated with human annoyance. A design space spanning the number of high-lift leading edge propellers and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4eca2eb1d8e420691dc967cafa80ada
https://doi.org/10.2514/6.2017-4050
https://doi.org/10.2514/6.2017-4050