Novel Engineering and Fabrication Techniques Tested in Low-Noise- Research Fan Blades [PDF]
A major source of fan noise in commercial turbofan engines is the interaction of the wake from the fan blades with the stationary vanes (stators) directly behind them.
Cunningham, Cameron C.
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Tether Space Mobility Device Attitude Control during Tether Extension and Winding
Machines, 2018 Recently, advancements in space technology have opened up more opportunities for human beings to work in outer space. It is expected that upsizing of manned space facilities, such as the International Space Station, will further this trend.
Shoichiro Takehara +2 more
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The LDCM actuator for vibration suppression [PDF]
A linear dc motor (LDCM) has been proposed as an actuator for the COFS I mast and the COFS program ground test Mini-Mast. The basic principles of operation of the LDCM as an actuator for vibration suppression in large flexible structures are reviewed ...
Ide, Eric N., Lindner, Douglas K.
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Eficiência de uso de potássio por genótipos de arroz de terras altas. [PDF]
, 2011 O emprego de cultivares eficientes na utilização de nutrientes é uma estratégia importante para reduzir o custo da produção agrícola pela redução do uso de fertilizantes.
BARBOSA FILHO, M. P. +3 more
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Boston University Women's Chorale and Repertory Chorus, Monday, February 26, 2001 [PDF]
, 2001 This is the concert program of the Boston University Women's Chorale and Repertory Chorus performance on Monday, February 26, 2001 at 8:00 p.m., at the Boston University Concert Hall, 855 Commonwealth Avenue, Boston, Massachusetts. Works performed were O
School of Music, Boston University
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Modeling of the Achilles Subtendons and Their Interactions in a Framework of the Absolute Nodal Coordinate Formulation. [PDF]
Materials (Basel), 2022 Obrezkov LP, Finni T, Matikainen MK.
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Modeling of Broadband Liners Applied to the Advanced Noise Control Fan [PDF]
The broadband component of fan noise has grown in relevance with an increase in bypass ratio and incorporation of advanced fan designs. Therefore, while the attenuation of fan tones remains a major factor in engine nacelle acoustic liner design, the ...
Jones, Michael G. +2 more
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On the Dynamics of Flexible Wings for Designing a Flapping-Wing UAV
DronesThe increasing number of applications involving the use of UAVs has motivated the research for design considerations that increase the safety, endurance, range, and payload capability of these vehicles.
Renan Cavenaghi Silva, Douglas D. Bueno
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Research on dynamic characteristics of large deformation shearer cable based on absolute node coordinate formulation method. [PDF]
PLoS One, 2023 Zhao L, Zhang H, Gao F, Han L, Ge M.
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Predicting the Inflow Distortion Tone Noise of the NASA Glenn Advanced Noise Control Fan with a Combined Quadrupole-Dipole Model [PDF]
A combined quadrupole-dipole model of fan inflow distortion tone noise has been extended to calculate tone sound power levels generated by obstructions arranged in circumferentially asymmetric locations upstream of a rotor.
Koch, L. Danielle
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