Results 91 to 100 of about 63,753 (279)
Control Law Design for Twin Rotor MIMO System with Nonlinear Control Strategy
Discrete Dynamics in Nature and Society, 2016 Modeling of complex air vehicles is a challenging task due to high nonlinear behavior and significant coupling effect between rotors. Twin rotor multi-input multioutput system (TRMS) is a laboratory setup designed for control experiments, which resembles
M. Ilyas +5 more
doaj +1 more source
Development in helicopter tail boom strake applications in the US [PDF]
The use of a strake or spoiler on a helicopter tail boom to beneficially change helicopter tail boom air loads was suggested in the United States in 1975.
Donahue, Cynthia C. +3 more
core +1 more source
Mass Exchange Flow Process in Side Channel Pumps: Effects of Different Geometrical Parameters
Energy Science &Engineering, EarlyView.Figure 1 shows the Mass Flow Exchange (MFE) in the impeller at z = 7.5 × 10−3 m at 1.0 Q/QBEP, operating point for impeller scheme 1 (IMP 1), and impeller scheme 2 (IMP 2). The flow begins to exit the impeller at the outer radius and enters at the inner and central radii. IMP 1 exhibits more flow in and out compared to IMP 2. ABSTRACT The functionality
Desmond Appiah +5 more
wiley +1 more source
RESULTS OF THE FIRST MI-171A2 FLYING LABORATORY TEST PHASE
Научный вестник МГТУ ГА, 2016 The present publication describes the results of the first stage of the flying laboratory (Mi-171 helicopter) flight tests performed at Mil Moscow Helicopter Plant, JSC facilities. Main rotor components with blades made of polymer composite materials and
V. A. Ivchin, K. Y. Samsonov
doaj
Exploration, EarlyView.This study innovates a Ca2+‐responsive hydrogel dressing that releases AIE photosensitizers on‐demand. Low Ca2+ enhances bacterial hyaluronidase (HAase) activity, degrading hyaluronic acid dressing to trigger antibacterial ROS release, while high Ca2+ inhibits HAase, preventing overdosing.
Rongwei Cui +12 more
wiley +1 more source
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 A novel measurement method for repetition frequencies of the blades of an aerial vehicle (in part, helicopter's main and tail rotor) for adaptation circuits of the radar sensor with an inverse synthesis of antenna aperture is proposed.
S. R. Heister, T. T. Nguyen
doaj
DronesThe flight controllability and safety of unmanned compound rotorcraft are closely related to their aerodynamic characteristics. During forward flight, complex aerodynamic interference effects arise among the rotor, propeller, wing, fuselage, and ...
Xinfan Yin +7 more
doaj +1 more source
Rotor performance characteristics from an aeroacoustic helicopter wind-tunnel test program [PDF]
An investigation of helicopter rotor noise at model scale was conducted in the Langley 4 by 7 meter tunnel. The program described was the first of a planned three-phase project whose purpose was to examine the characteristic noise mechanism involved in ...
Elliott, J. W., Hoad, D. R., Orie, N. M.
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Interdisciplinary Medicine, EarlyView.Discovery and validation of a urinary extracellular vesicle protein signature for the diagnosis of renal allograft fibrosis. Abstract Interstitial fibrosis is the best indicator of irreversible or ongoing renal injury after kidney transplantation and faces considerable diagnostic challenges.
Wenxuan Zhao +12 more
wiley +1 more source
Aerodynamic interference effects on tilting proprotor aircraft [PDF]
The Green's function method was used to study tilting proprotor aircraft aerodynamics with particular application to the problem of the mutual interference of the wing-fuselage-tail-rotor wake configuration.
Ham, N. D. +3 more
core +1 more source