Results 31 to 40 of about 3,562 (262)

Aircraft Carrier Pose Tracking Based on Adaptive Region in Visual Landing

Drones, 2022
Due to its structural simplicity and its strong anti-electromagnetic ability, landing guidance based on airborne monocular vision has gained more and more attention.
Jiexin Zhou, Qiufu Wang, Zhuo Zhang, Xiaoliang Sun   +3 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Study on lateral stability control of carrier-based aircraft towbarless tractor system

Systems Science & Control Engineering
The lateral stability and control of carrier-based aircraft towbarless tractor system are analysed. Considering the coupled motion effects of carrier roll, pitch and heave, a four degree of freedom time-varying nonlinear dynamic model of the carrier ...
Jiyan Qi, Haoyang Xu, Ming Su
doaj   +1 more source

Flight Load Design of Nacelle of Carrier-Based Propeller Transport Aircraft [PDF]

Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University, 2020
The carrier-based propeller transport aircraft has a compact layout, where the large nacelle in size and weight is sensitive to propeller slipstream, and thus calls for sophisticated flight load design studies, which are still insufficient considering domestic experience.
Kaichao Ma, Changhong Tang, Jianye Zhang, Xiaofei Niu, Qingzhi Fan   +4 more
openaire   +2 more sources

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Carrier Aircraft Flight Controller Design by Synthesizing Preview and Nonlinear Control Laws

Drones, 2023
This paper proposes an innovative automatic carrier landing control law for carrier-based aircraft considering complex ship motion and wind environment. Specifically, a strategy is proposed to synthesize preview control with an adaptive nonlinear control
Baoxu Jia, Liguo Sun, Xiaoyu Liu, Shuting Xu, Wenqian Tan, Junkai Jiao   +5 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Dynamic multi-constraint path planning of carrier-based aircraft based on deep reinforcement learning

Zhongguo Jianchuan Yanjiu
ObjectiveMost existing path planning methods for carrier-based aircraft fail to account for the practical spatial constraints encountered during their transfer process and have difficulty adapting to the highly dynamic conditions on the deck.
Shuo HE, Gaohuan XU, Yuanyuan JIN, Yafei LI, Tiantian LI, Hua WANG, Yibo GUO, Lulu LI, Mingliang XU   +8 more
doaj   +1 more source

Sinking Velocity Impact-Analysis for the Carrier-Based Aircraft Using the Response Surface Method-Based Improved Kriging Algorithm

Advances in Materials Science and Engineering, 2020
The deck landing sinking velocity of carrier-based aircraft is affected by carrier attitude, sea condition, aircraft performance, etc. Its impact analysis is a complex nonlinear problem, and there even is some contradictory phenomenon that when the ...
Xiao-Feng Xue, Yuan-Zhuo Wang, Cheng Lu, Zhang Yun-Peng   +3 more
doaj   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source