Zobrazeno 1 - 10
of 3 019
pro vyhledávání: '"Wind gradient"'
Akademický článek
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Publikováno v:
IEEE Access, Vol 10, Pp 87715-87732 (2022)
High-altitude long-endurance (HALE) solar-powered unmanned aerial vehicles (UAVs) have outstanding advantages in military and civilian fields. In view of the energy management problem of HALE solar aircraft in a wind field, and considering the combin
Externí odkaz:
https://doaj.org/article/42d6ad9f2f8449a8b965097fe2a6128e
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
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Publikováno v:
Chinese Journal of Aeronautics. 35:19-29
Harvesting wind energy is promising for extending long-endurance flights, which can be greatly facilitated by a flight technique called dynamic soaring. The presented study is concerned with generating model-based trajectories with smooth control his
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9240d3e6d6e2d25459fd6484b7f9ee89
https://doi.org/10.1016/j.cja.2021.09.012
https://doi.org/10.1016/j.cja.2021.09.012
Autor:
Alexander Kalmikov
Publikováno v:
Wind Energy Engineering ISBN: 9780323993531
Wind energy technology is based on the ability to capture the energy contained in air motion. Wind power quantifies the rate of this kinetic energy extraction. Wind power is also the rate of kinetic energy flow carried by the moving air. Because the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ff803cf0686c4c0ce94157f0601b139
https://doi.org/10.1016/b978-0-323-99353-1.00007-4
https://doi.org/10.1016/b978-0-323-99353-1.00007-4
Publikováno v:
IEEE Sensors Journal. 21:20248-20257
To study the performance of the glide path scan wind shear alerting algorithm (GLYGA) for wind shear detection with wind LiDAR sensors, this paper constructed two types of simulated wind fields for wind shear detection experiments based on a MATLAB t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e4fc8a0373716a003848649378c0d21
https://doi.org/10.1109/jsen.2021.3077283
https://doi.org/10.1109/jsen.2021.3077283
Autor:
Junqiang Bai, Siqi Liu
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 39, Iss 4, Pp 703-711 (2021)
Dynamic soaring is an emerging flight range-extension technology that effectively reduces UAV's energy consumption by deriving wind energy from lateral gradient wind fields. Comparing with the small UAV's near the surface, the application of dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::465bc93c9f3a3f59d0b8417fe93d788d
https://doi.org/10.1051/jnwpu/20213940703
https://doi.org/10.1051/jnwpu/20213940703
Autor:
Gottfried Sachs, Benedikt Grüter
Publikováno v:
Journal of Guidance, Control, and Dynamics. 44:812-824
Dynamic soaring is an engineless flight mode that is feasible by extracting energy from horizontally blowing shear wind. There is a possibility of extremely high speeds in wind scenarios where a th...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad487e3746787aa1997aa57593f68161
https://doi.org/10.2514/1.g004954
https://doi.org/10.2514/1.g004954
Publikováno v:
Applied Sciences, Vol 9, Iss 20, p 4256 (2019)
Monin−Obukhov similarity theory (MOST) overestimates the mean vertical velocity gradient in some atmospheric stable conditions, i.e., Richardson number R f < 0.25 . To obtain a given hub-height inflow velocity for a certain roughness length, this o
Externí odkaz:
https://doaj.org/article/dd6e8a4e41394662bd2e213fe87942c3
Autor:
Marc Arbez
Publikováno v:
Wind Engineering. 45:1020-1039
The sun’s position in the sky appears to strongly influence the vertical wind gradient within the atmospheric boundary layer. This study uses a quantitative research design that combines the position of the sun along with surface wind speeds to est
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3c3126778c21532ddc23e2825f84f47
https://doi.org/10.1177/0309524x20944390
https://doi.org/10.1177/0309524x20944390