Results 111 to 120 of about 151,224 (313)
Sonic-box method employing local Mach number for oscillating wings with thickness [PDF]
A computer program was developed to account approximately for the effects of finite wing thickness in the transonic potential flow over an oscillating wing of finite span.
Ruo, S. Y.
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Batteries &Supercaps, EarlyView.On a digitized laboratory extruder, discrete element method modelling is studied, considering two classes of particles representing aggregates of 1) active material and 2) binder and carbon material is studied. Various extrusion scenarios leading to the formation of filaments devoted to the 3D printing of lithium‐ion battery electrodes are studied. The
Pei Sun +2 more
wiley +1 more source
Design, modeling, and manufacturing of delta wings with wing fences
Results in EngineeringThis work presents the aerodynamic design, structural integration, and experimental validation of a low-cost delta-wing UAV optimized for high-altitude, low-density environments such as Bogotá, Colombia. A multi-stage workflow was implemented, comprising
J.A. Parada-Marin +4 more
doaj +1 more source
Basic studies on delta wing flow modifications by means of apex fences [PDF]
The effectiveness of apex fences on a 60-deg delta wing at low speeds was experimentally investigated. Resembling highly swept spoilers in appearance, the fences are designed to fold out of the wing apex region upper surface near the leading edges, where
Frassinelli, M. C. +2 more
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Biological Reviews, EarlyView.ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson +9 more
wiley +1 more source
Experimental and Numerical Attenuation of Vibration for Delta Wing Using PI Controller
مجلة النهرين للعلوم الهندسية, 2017 Active vibration controlling loop with proportional - Integral (PI) controller was tested numerically and experimentally for delta wing with three different manufacturing materials; aluminum, [0/90] composite and aluminum foam, both P and PI loop were ...
Ahmed A. ALi +2 more
doaj
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Free-flight model investigation of a vertical-attitude VTOL fighter [PDF]
Tests were made in the Langley full-scale tunnel and included a study of the stability and control characteristics of delta- and swept-wing configurations from hovering through the transition to normal forward flight.
Anglin, E. L., Newsom, W. A., Jr.
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Business Strategy and the Environment, EarlyView.ABSTRACT Ensuring the resilience of industrial symbiosis networks (ISNs) has emerged as a key concern in the literature. However, existing studies focus on network‐level strategies, neglecting the potential benefits derived from strengthening the links between symbiotic partners.
Melissa Mollica +2 more
wiley +1 more source
Space shuttle: Basic hypersonic force data for Grumman delta wing orbiter configurations ROS-NB1 and ROS-WB1 [PDF]
Hypervelocity wind tunnel tests at Mach 10 of delta wing space shuttle ...
Johannesen, B., Levine, J., Milhous, M.
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