Results 81 to 90 of about 272,623 (306)

LRNet: lightweight attention-oriented residual fusion network for light field salient object detection

open access: yesScientific Reports
Light field imaging contains abundant scene structure information, which can improve the accuracy of salient object detection in challenging tasks and has received widespread attention.
Shuai Ma   +4 more
doaj   +1 more source

Calculation Analysis on the Door’s Contact Force of theFlight Lock Mechanism for Civil Airplane

open access: yesHangkong gongcheng jinzhan, 2018
It is of great significance to study the contact force in the aircraft’s flight lock mechanism for the design of the flight lock mechanism of the civil aircraft. The function and main design basis of flight lock are firstly introduced.
Liu Chengye, Huang Zhenting, Zhou Ying
doaj   +1 more source

The Transport of Insects in Aircraft

open access: yesJournal of Economic Entomology, 1945
Uploaded by Plazi for TaxoDros. We do not have abstracts.
openaire   +3 more sources

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

open access: yesAdvanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren   +5 more
wiley   +1 more source

Bioinspired Passive Flow Routing to Mitigate Thrombosis in Prosthetic Heart Valves and Cardiovascular Devices

open access: yesAdvanced Science, EarlyView.
Bioinspired passive flow routing mitigates thrombosis in cardiovascular devices by redirecting a small fraction of forward flow into stagnation‐prone regions. Inspired by avian alula and aircraft slat mechanisms, strategically placed routing channels restore washout around mechanical heart valves, reducing low‐shear exposure by four orders of magnitude
Yevgeniy Kreinin   +8 more
wiley   +1 more source

Aircraft environmental control systems modeling for configuration selection [PDF]

open access: yes, 2013
According to the statistics about civil transportation aircraft Environmental Control system (ECS), the three-wheel high pressure water separation system (HPWS) and low pressure water separation system (LPWS) are the most common choices for the 150 ...
Peng, Xiong
core  

Acoustic mode detection in an engine nacelle with a scaled rig fan

open access: yesAdvances in Aerodynamics
Acquiring acoustic modes with high quality data in large-scale nacelles is quite challenging in the engine industry because of the complex configuration, high flow speed, tremendous number of acoustic modes, and some other extraordinary interference.
Kangle Xu   +4 more
doaj   +1 more source

Rare‐Earth–Sulfur Surface Modification Enables SiC Ceramics for Low‐Frequency Electromagnetic Wave Absorption in Extreme Environments

open access: yesAdvanced Science, EarlyView.
By altering surface chemical bonds to prolong relaxation time and shift absorption to lower frequencies, SiC/rare earth–sulfur (RE─S, RE = La, Ce, Pr, Sm, Gd, Er) materials achieve excellent low‐frequency electromagnetic wave absorption under extreme conditions, offering a new direction for designing high‐performance SiC‐based absorbers.
Zhanming Wu   +5 more
wiley   +1 more source

Aeroservoelastic analysis method for mixed-command fault of flight control system

open access: yesHangkong gongcheng jinzhan
Large civil aircraft fly-by-wire flight control systems may experience a fault condition where both normal mode and direct mode control commands are output simultaneously. It is necessary to propose a method to demonstrate the airworthiness compliance of
DING Luning, YANG Fei, LI Peng
doaj   +1 more source

Research on Configuration Control Technology for Civil Aircraft Flight Test Based on Modular Design [PDF]

open access: yesE3S Web of Conferences
A configuration control method, based on modular design, is proposed to solve the problem that the aircraft configuration changes due to design changes, and the flight test is difficult to carry out.
Xue Jikun   +3 more
doaj   +1 more source

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