Results 81 to 90 of about 525,947 (205)
Pre-design study for a modern four-bladed rotor for the Rotor System Research Aircraft (RSRA) [PDF]
Various candidate rotor systems were compared in an effort to select a modern four-bladed rotor for the RSRA. The YAH-64 rotor system was chosen as the candidate rotor system for further development for the RSRA.
Hughes, C. W., Logan, A. H.
core +1 more source
Study of longitudinal vibrations of stab knife refiners [PDF]
, 2019 The subject of research is the longitudinal vibrations of stab knife refiners. A model of the fibrous layer between the rotor and stator is developed. It is shown that it is advisable to use the Maxwell-Thomson model for liquid friction of the rotor and ...
Vikharev, S. N., Zasypkina, S. A.
core
Discover OceansThe Philippines is committed to reducing carbon emissions by shifting to renewable (e.g., tidal) energy. However, despite its abundant tidal energy resources, the localized characterization of its behavior in the country (e.g. Awasan Bay) remains limited.
Louis Irwin Questo, Mark Anthony Rotor
doaj +1 more source
Performance and loads data from a hover test of a 0.658-scale V-22 rotor and wing [PDF]
A hover test of a 0.658-scale model of a V-22 rotor and wing was conducted at the Outdoor Aerodynamic Research Facility at Ames Research Center. The primary objectives of the test were to obtain accurate measurements of the hover performance of the rotor
Betzina, Mark D. +3 more
core +1 more source
Investigation of rotor blade element airloads for a teetering rotor in the blade stall regime [PDF]
A model of a teetering rotor was tested in a low speed wind tunnel. Blade element airloads measured on an articulated model rotor were compared with the teetering rotor and showed that the teetering rotor is subjected to less extensive flow separation ...
Dadone, L. U., Fukushima, T.
core +1 more source
Aerodynamic characteristics of a 1/6-scale powered model of the rotor systems research aircraft [PDF]
A wind-tunnel investigation was conducted to determine the effects of the main-rotor wake on the aerodynamic characteristics of the rotor systems research aircraft (RSRA).
Freeman, C. E., Mineck, R. E.
core +1 more source
Hover test of a full-scale hingeless rotor [PDF]
The performance and aeroelastic stability in hover of a 9.8-m diameter, hingeless helicopter rotor system was evaluated. Rotor performance and inplane damping data were obtained for rotor operation between 350 and 425 rpm for thrust coefficients (CT ...
Peterson, R. L., Warmbrodt, W.
core +1 more source
Study for prediction of rotor/wake/fuselage interference, part 1 [PDF]
A method was developed which allows the fully coupled calculation of fuselage and rotor airloads for typical helicopter configurations in forward flight. To do this, an iterative solution is carried out based on a conventional panel representation of the
Clark, D. R., Maskew, B.
core +1 more source
Nature CommunicationsPorous polydimethylsiloxane (PDMS) elastomers produced using conventional phase separation methods often suffer from limited tribological and mechanical properties.
Yuhao Wu +13 more
doaj +1 more source
Investigation of flow phenomena in a transonic fan rotor using laser anemometry [PDF]
Several flow phenomena including flowfield periodicity, rotor shock oscillation, and rotor shock system geometry were investigated in a transonic low aspect ratio fan rotor using laser anemometry.
Strazisar, A. J.
core +1 more source