Results 31 to 40 of about 90,246 (309)

Influence of blade aerodynamic model on the prediction of helicopter high-frequency airloads [PDF]

, 2011
Brown’s vorticity transport model has been used to investigate the influence of the blade aerodynamic model on the accuracy with which the high-frequency airloads associated with helicopter blade–vortex interactions can be predicted.
Benoît B., Boyd D. D., Duraisamy K., Hopkins A. S., Johnson W., Kelly M. E., Küssner H. G., Leishman J. G., Lim J. W., Lim J. W., Mary E. Kelly, Pengel K., Richard E. Brown, Schneider O., Thom A., Toro E. F., van der Wall B. G., Whitehouse G., Yu Y. H.   +18 more
core   +1 more source

Trajectory predictions of new lift separation sabots

Defence Technology, 2021
This paper presents a modified analytical model to evaluate the trajectories of various lift separation sabot configurations. The aerodynamic forces acting on the sabot surfaces during a supersonic flight are modeled in the present analytical model by ...
Sreelal Mohanan, Rajesh G
doaj   +1 more source

Main rotor-tail rotor intraction and its implications for helicopter directional control [PDF]

, 2008
Aerodynamic interference between the main and tail rotor can have a strong negative influence on the flight mechanics of a conventional helicopter. Significant unsteadiness in the tail rotor loading is encountered under certain flight conditions, but the
Brown, R.E., Fletcher, Timothy M.
core   +1 more source

Simulating wind turbine interactions using the vorticity transport equations [PDF]

, 2009
The aerodynamic interactions that can occur within a wind farm result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Brown, R.E., Fletcher, Timothy M.
core  

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

Aerodynamic interaction of rain and wind turbine blades: the significance of droplet slowdown and deformation for leading-edge erosion [PDF]

Wind Energy Science
Leading-edge rain erosion is a severe problem in the wind energy community since it leads to blade damage and a reduction in annual energy production by up to a few percent. The impact speed of rain droplets is a key driver of the erosion rate; therefore,
N. Barfknecht, D. von Terzi
doaj   +1 more source

Interaction Effect between Hull and Accommodation on Wind Drag Acting on a Container Ship

Journal of Marine Science and Engineering, 2020
In this paper, we present our research on applying the commercial Computational Fluid Dynamics (CFD) code to investigate interaction effect between hull and accommodation on wind drag acting above the water hull surface of a full scale 1200 TEU container
Ngo Van He, Ngo Van Hien, Van-Thuan Truong, Ngoc-Tam Bui   +3 more
doaj   +1 more source

Numerical Investigation and Fluid-Structure Interaction (FSI) Analysis on a Double-Element Simplified Formula One (F1) Composite Wing in the Presence of Ground Effect

Fluids, 2022
This research paper focuses on a novel coupling of the aerodynamic and structural behaviour of a double-element composite front wing of a Formula One (F1) vehicle, which was simulated and studied for the first time here.
Chris Sungkyun Bang, Zeeshan A. Rana, László Könözsy, Veronica Marchante Rodriguez, Clive Temple   +4 more
doaj   +1 more source

Germline TP53 Mutations Causing Diamond–Blackfan Anemia: A French Report

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Diamond–Blackfan anemia is a rare congenital erythroblastopenia typically caused by mutations in ribosomal protein genes. Recently, gain‐of‐function mutations in TP53 have been identified as a novel cause of Diamond–Blackfan anemia. We report two French patients who both harbored a heterozygous TP53 deletion (NM_000546.5: c.1077delA; p ...
Rafael Moisan, Lydie Da Costa, Ludivine David Nguyen, Heloise Chosseler, Audrey Riquet, Benedicte Bruno, Melissa Barbati   +6 more
wiley   +1 more source

STABILITY AND RELIABILITY OF LONG-SPAN BRIDGE STRUCTURES

Architecture and Engineering, 2022
Introduction: Despite the fact that, in recent years, the construction of long-span bridges has been extensively developed, cases of bridge structures buckling in wind still occur, but the issue of their interaction with wind has not been sufficiently ...
Olga Poddaeva, Pavel Churin, Alexey Loktev, Chafic-Touma Salame   +3 more
doaj   +1 more source