Results 11 to 20 of about 17,778 (196)
Parasitic isopod Anilocra apogonae, a drag for the cardinal fish Cheilodipterus quinquelineatus [PDF]
Marine Ecology Progress Series, 2005 Cymothoid isopods Anilocra apogonae are regular ectoparasites of the cardinal fish Cheilodipterus quinquelineatus on the Great Barrier Reef. To determine whether this large isopod, attached to the head of the fish, affects the physiology and behaviour of its host, we conducted morphological measurements to obtain a condition index and several ...
Ostlund-Nilsson, Sara +3 more
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Single rotor helicopter parasite drag estimation in the preliminary design stage [PDF]
Tehnika, 2018 This paper presents the methodology for the rapid estimation of the single rotor helicopter parasite drag in the forward flight in the preliminary design phase. The aerodynamic drag of fuselage, main rotor hub, landing gear and the other, non-rotating defective surfaces contribute with more than 50% of the total power required for the forward flight at
Dodić Marjan D. +2 more
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The avian tail reduces body parasite drag by controlling flow separation and vortex shedding [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 2001 The aerodynamic effect of the furled avian tail on the parasite drag of a bird's body was investigated on mounted, frozen European starling Sturnus vulgaris in a wind tunnel at flight speeds between 6 and 14 m s(-1). Removal of tail rectrices and dorsal and ventral covert feathers at the base of the tail increased the total parasite drag of the body ...
W J, Maybury, J M, Rayner
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InterConf, 2023 This work is devoted to the determination of the parasite drag of the components of the main rotor hub and the swashplate of a medium transport helicopter Mi-8 type. As well as interference of components between themselves and the fuselage. The calculations were carried out using modern methods of computational fluid dynamics (CFD).
Mykhaylo Kybalnyy +3 more
openaire +1 more source
Low-Profile Conformal UWB Antenna for UAV Applications
IEEE Access, 2019 This article presents a new design of an ultra-wideband conformal antenna for Unmanned Aerial Vehicle (UAV) applications. The antenna is a low-profile structure which is very suitable to diminish aerial vehicle drag problem.
Luz I. Balderas +4 more
doaj +1 more source
Direct numerical simulation of the drag force in bubble swarms [PDF]
, 2007 This paper studies the swarm effect on the drag force in bubbly flows. From literature it is well-known that for relatively small bubbles, the drag force increases with the bubble hold-up due to additional hindrance experienced by the bubbles caused by ...
Dijkhuizen, W. +2 more
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A dynamic model for the optimization of oscillatory low grade heat engines [PDF]
, 2011 The efficiency of a thermodynamic system is a key quantity on which its usefulness and wider application relies. This is especially true for a device that operates with marginal energy sources and close to ambient temperatures.
Markides, CN, Smith, TCB
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Fluids, 2018 Windage (drag) losses have been found to be a key design factor for high power density and high-speed electric motor development. Inducing axial flow between rotor and stator is a common method in cooling the rotor.
Kevin R. Anderson +2 more
doaj +1 more source
Evaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approaches [PDF]
, 2017 The design and development processes for future aircraft aims to address the environmental and efficiency challenges needed to facilitate the engineering of concepts that are far more integrated and require a multidisciplinary approach.
Hayes, D. +2 more
core +1 more source
AerospaceParasitic SAR formation can be flown at low altitude using smaller satellites and adding potential to conventional SAR mission From the orbital point of view, the main issue is related to the differential aerodynamic drag, which rapidly disrupts the ...
Marco D’Errico
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