Results 21 to 30 of about 367,561 (307)

Study on correction technology of aircraft angle-of-attack signal based on estimation of side-slip angle

open access: yesHangkong gongcheng jinzhan
The angle-of-attack signal is very important for modern fly-by-wire flight control system aircraft. The inconsistency of the local airflow on both sides of the nose will cause the difference of the angle-of-attack signal.The signal-monitoring voting ...
XUE Yuan, LIU Shimin, WEI Jianlong
doaj   +1 more source

Secondary Acute Angle-Closure Attack: Diagnosis and Management

open access: yesSiriraj Medical Journal, 2018
Patients may come with acute angle-closure attack that mimics primary disease, but actually there was a hidden cause. Mostly, fellow eye with wide open angle might be a clue for secondary cause. However, an area with high prevalence of narrow angle makes
Sakaorat Petchyim
doaj   +3 more sources

Determination of angle of attack for rotating blades [PDF]

open access: yesINCAS Bulletin, 2012
For a rotating blade the flow passing by a blade section is bended due to the rotation and the local flow field is influenced by the bound circulation on the blade. As a further complication, 3-D effects from tip and root vortices do a precise definition
Alexandru DUMITRACHE   +3 more
doaj   +1 more source

State of the art in acute glaucoma attack predisposition issue

open access: yesРоссийский офтальмологический журнал, 2022
Angle-closure glaucoma diagnosis verification is based on biometric indicators and computer tomography data of the anterior segment of the eye. However, not every patient with a narrow angle and a shellow anterior chamber develops an acute attack.
N. A. Bakunina
doaj   +1 more source

Design of Three-Dimensional Vector Guidance Law for Attack Time and Angle under Field of View Angle Constraints [PDF]

open access: yesHangkong bingqi
In order to enhance the precision of missile strikes on targets, controlling the three-dimensional gui-dance problem involving attack time and attack angle is of significant importance in practical applications.
Xiong Tianhao, Wang Changyuan, Zhang Ke, Su Yu, Guo Zhengyu
doaj   +1 more source

Modification of Horizontal Wind Turbine Blade: A Finite Element Analysis

open access: yesInternational Journal of Technology, 2023
Turbines are efficient power generators. Because wind energy is a clean fuel source, it is widely utilized in some regions. One of the major factors affecting wind turbine performance is the angle of attack of the blade.
Sahahd Hamza   +4 more
doaj   +1 more source

An Intelligent Algorithm for Aerodynamic Parameters Calibration of Wind Tunnel Experiment at a High Angle of Attack

open access: yesInternational Journal of Aerospace Engineering, 2023
In this paper, an intelligent algorithm for the aerodynamic parameter calibration of wind tunnel experiments of advanced layout aircraft at a high angle of attack is proposed.
Yeguang Wang   +5 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Buffet induced structural/flight-control system interaction of the X-29A aircraft [PDF]

open access: yes
High angle-of-attack flight regime research is currently being conducted for modern fighter aircraft at the NASA Ames Research Center's Dryden Flight Research Facility.
Brenner M.J.   +5 more
core   +2 more sources

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