Results 121 to 130 of about 97,833 (315)

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Re-entry trajectory optimization for a SSTO vehicle in the presence of atmosheric uncertainties

, 2013
This paper addresses the design of the unpowered re-entry trajectory of a fully reusable, winged, unmanned single-stage-to-orbit (SSTO) vehicle, as the last phase of a payload deployment into low Earth orbit.
Minisci, Edmondo, Pescetelli, Fabrizio, Brown, Richard   +2 more
core  

Civil aircraft trajectory analyses - impact of engine degradation on fuel burn and emissions [PDF]

, 2013
Commercial aviation and air traffic is still expected to grow by 4-5% annually in the future and thus the effect of aircraft operation on the environment and its consequences for the climate change is a major concern for all parties involved in the ...
Venediger, Benjamin
core  

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source

Automatic MGA trajectory planning with a modified ant colony optimization algorithm

, 2009
This paper assesses the problem of designing multiple gravity assist (MGA) trajectories, including the sequence of planetary encounters. The problem is treated as planning and scheduling of events, such that the original mixed combinatorial-continuous ...
Vasile, M., Ceriotti, M.
core  

Influence of boundary layer transition on the trajectory optimisation of a reusable launch vehicle

, 2014
Based on flight experience from the Space Shuttle programme, it is well known that mis-prediction of the effects of boundary layer transition represents one of the highest technical risks when designing a Reusable Launch Vehicle.
Edmondo Minisci, Fabrizio Pescetelli, Richard E. Brown, Minisci, Edmondo, Wuilbercq, Romain, Romain Wuilbercq, Pescetelli, Fabrizio, Brown, Richard   +7 more
core   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Food sorting trajectory optimization based on improved NURBS and Delta parallel robots

Shipin yu jixie
ObjectiveReduce the running time and impact of Delta robot in food sorting trajectory, improve the efficiency and stability of Delta robot operation.MethodsBased on the analysis of the food sorting system (using Delta robots), a Delta robot food sorting ...
CHEN Guangdong, SHAO Jian, WANG Feini, ZHAO Xuecheng   +3 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

The Complex Wellbore Trajectory Control Torque Optimization Based on NPSO Algorithm

Shiyou jixie, 2017
Considering the multi-variables and complex constrain conditions of the complex well trajectory optimization, a new particle swarm optimization (NPSO)algorithm is designed to improve the accuracy and optimization speed of complex wellbore trajectory ...
Sha Linxiu, Pan Zhongqi
doaj