Results 271 to 280 of about 63,330 (315)
Some of the next articles are maybe not open access.
Impact of Bypass Duct Bifurcations on Fan Noise
Journal of Propulsion and Power, 2012The present work is concerned with the impact of bifurcations, i.e., extensions of the pylon inside the bypass duct, on fan tonal noise radiated by civil turbofan engines. The investigation is carried out on a typical configuration composed of a rotor–stator stage, a row of struts, and one upper and one lower bifurcation.
Holewa, Axel +2 more
openaire +3 more sources
Unsteady flowfield simulation of ducted prop-fan configurations
30th Aerospace Sciences Meeting and Exhibit, 1992A technique for the simulation of unsteady flows in and around complex rotating machinery is presented. Additional domain decomposition mechanisms are introduced which extend the range of applicability of software developed for the time-accurate simulation of rotating machinery flowfields.
J. Mark Janus +2 more
openaire +1 more source
Experimental/Numerical Study of Ducted-Fan Noise: Effect of Duct Inlet Shape
AIAA Journal, 2018The paper presents an investigation of flow and noise produced by the generic fan of an environmental control system installed in a circular duct, with a focus on the evaluation of the effect of me...
Shur, M. +7 more
openaire +2 more sources
Bypass duct fan noise reduction assembly
The Journal of the Acoustical Society of America, 2003A gas turbine engine fan assembly includes fan blades spaced axially from stator vanes inside an annular bypass duct. A plurality of perforated baffle plates are installed in the annular bypass duct downstream of the stator vanes. The perforated baffle plates extend in a generally axial direction and are unevenly, circumferentially spaced apart from ...
openaire +1 more source
Fan Angular Momentum Analysis for Ducted Fan UAVs During Conceptual Design
50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2012This paper outlines some of the effects of fan angular momentum on ducted fan UAVs. All aircraft will be affected by their propeller’s angular momentum, however, ducted fan vehicles are particularly susceptible due to the relative sizes of the fan and the airframe.
Brandon Stiltner, Osgar Ohanian
openaire +1 more source
Ducted Fans for Vertical Take‐off
Aircraft Engineering and Aerospace Technology, 1960THE Aeronautics Division of Chance Vought, Dallas, Texas, U.S.A., have recently released details of their own particular concept of a vertical take‐off and landing aircraft which uses the power from four turbojet engines to drive ducted fans. This propulsion/control system for VTOL/STOL aircraft is designated Air Deflexion and Modulation or by the ...
openaire +1 more source
Anti-Corrosion Methods and Materials, 1957
‘It's an ill wind that blows nobody any good,’ says the old adage, and a case in point is that of polyvinylchloride, a thermoplastic material with great corrosion resistance which, although produced in the laboratory nearly 100 years ago, has only been of commercial importance since the last war. In the manufacture of any fan the emphasis is on design.
openaire +1 more source
‘It's an ill wind that blows nobody any good,’ says the old adage, and a case in point is that of polyvinylchloride, a thermoplastic material with great corrosion resistance which, although produced in the laboratory nearly 100 years ago, has only been of commercial importance since the last war. In the manufacture of any fan the emphasis is on design.
openaire +1 more source
Social media content strategy for sport clubs to drive fan engagement
Journal of Retailing and Consumer Services, 2021Balamurugan Annamalai +2 more
exaly
Electric fan use for cooling during hot weather: a biophysical modelling study
Lancet Planetary Health, The, 2021Nathan B Morris +2 more
exaly