Zobrazeno 1 - 10
of 1 372
pro vyhledávání: '"Hover"'
Publikováno v:
Научный вестник МГТУ ГА, Vol 27, Iss 2, Pp 80-93 (2024)
The vortex ring states are observed when the rotor is flowed at positive angles of attack. For the main rotor, these conditions are realized during a steep descent of the helicopter at low speeds. The rotor vortex ring states are affected by signific
Externí odkaz:
https://doaj.org/article/641aa22aaa7c44a290c28cee5f97ff3e
Publikováno v:
Journal of Nanobiotechnology, Vol 22, Iss 1, Pp 1-13 (2024)
Abstract Background Acute lung injury (ALI) is a fatal respiratory disease caused by overreactive immune reactions (e.g., SARS-CoV-2 infection), with a high mortality rate. Its treatment is often compromised by inefficient drug delivery barriers and
Externí odkaz:
https://doaj.org/article/6faa9c7e9bef4e0fbd476cfb14993132
Autor:
GAO Hongbo
Publikováno v:
Hangkong gongcheng jinzhan, Vol 15, Iss 3, Pp 151-156,190 (2024)
The widespread application of composite materials in blades also makes the force and stiffness characteristics of blades more complex than traditional blades. In order to reduce the dynamic stress and vibration level of rotor blades，it is necessary
Externí odkaz:
https://doaj.org/article/20b1bafe955d4ea7800079717eb467f7
Autor:
Barbara Dessì, Rossella Maria Gafà, Lucio Martarelli, Gennaro Maria Monti, Angelantonio Silvi
Publikováno v:
Acque Sotterranee, Vol 13, Iss 2 (2024)
Italy is one of the richest countries in the world with regards to number and quality of thermal-mineral waters and has developed a widespread and extensive use of such resource (e.g. bathing, central heating, electric power production). Premised tha
Externí odkaz:
https://doaj.org/article/040045ae5c5248219816c704c8169ab1
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 6683-6692 (2024)
This study performed a numerical investigation to explore the effect of span-wise area distribution on flapping wing aerodynamics in hovering configuration using an in-house developed flow solver. The span-wise area distribution was defined using a m
Externí odkaz:
https://doaj.org/article/e87e8d652c224742a3e7107df41c2a21
Autor:
Yao Lei, Xiangzheng Zhao
Publikováno v:
Aerospace, Vol 11, Iss 9, p 737 (2024)
A novel octocopter with an overlapping rotor arrangement is proposed in this paper to increase the payload with a limited size. The aerodynamic performance was obtained by both experiments and numerical simulations with the rotor spacing ranging from
Externí odkaz:
https://doaj.org/article/23239751f8d346589ae3b5d37802ece0
Autor:
Kayatas, Erol, Celik, Murat
Publikováno v:
Aircraft Engineering and Aerospace Technology, 2023, Vol. 95, Issue 7, pp. 1029-1036.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/AEAT-08-2022-0215
Publikováno v:
Advanced Science, Vol 10, Iss 34, Pp n/a-n/a (2023)
Abstract Remote automated surveillance of insect abundance and diversity is poised to revolutionize insect decline studies. The study reveals spectral analysis of thin‐film wing interference signals (WISs) can discriminate free‐flying insects bey
Externí odkaz:
https://doaj.org/article/5cd6f066864d4de98dfef755f26380f2
Autor:
Chen, Chien-Hsiung, Zhai, Weimin
Publikováno v:
Asia Pacific Journal of Marketing and Logistics, 2022, Vol. 35, Issue 4, pp. 809-827.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/APJML-11-2021-0821
Autor:
Bitsui, Sherwin (AUTHOR)
Publikováno v:
Ploughshares. Spring2019, Vol. 45 Issue 1, p12-14. 3p.