Results 81 to 90 of about 18,648,888 (228)

Arcjet Propulsion System Study for NSSK

, 1993
The study of a low power arcjet propulsion system and its application to north-south .station keeping of geostationary telecommunication satellites was carried out at Centrospazio in the framework of the arcjet propulsion system development program ...
ANDRENUCCI, MARIANO, D'AGOSTINO, LUCA, D'AURIA F, SCORTECCI F   +3 more
core  

2D Skeletal Muscle Thin Film Actuators Enhance Efficiency of Biohybrid Robots

Advanced Functional Materials, EarlyView.
2D skeletal muscle thin film actuators generate millinewton‐scale forces and millimeter‐scale strokes while remaining functional for over 30 days. Their force density is 20‐fold higher than 3D skeletal muscle actuators, enabling multi‐fin robots with tunable speed and multidirectional steering.
Maheera Bawa, Arielle Berman, Laura Schwendeman, Ferdows Afghah, Seanbiron Johnson, Ritu Raman   +5 more
wiley   +1 more source

Electric Propulsion System for a Maneuverable Orbital Vehicle

, 2003
This paper presents a proposed maneuverable orbital vehicle based on the International Space Station (ISS) equipped with electric thrusters. The vehicle makes use of an external site of the ISS (e.g., the Express Pallet) to host a detachable platform ...
CECCANTI F, MARCUCCIO, SALVO
core  

Static Ground Validation of an AI-Assisted Acoustic Target Detection and Azimuth Estimation Framework on a Flying-Wing VTOL UAV

Eng
Autonomous acoustic sensing systems are increasingly investigated for unmanned aerial vehicle (UAV)-based surveillance and environmental monitoring applications due to their passive operation and relatively low computational requirements.
Gabriel-Petre Badea, Daniel-Eugeniu Crunteanu   +1 more
doaj   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

Advanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon, Jian Ni, Sungmo Park, Yang Xu, Yong Chen   +4 more
wiley   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Design, Modeling, and MPC-Based Control of a Fully Vectored Propulsion Underwater Robot

Drones
This paper presents the design and implementation of a novel autonomous underwater robot with fully vectored propulsion based on model predictive control (MPC) to rapidly respond to the position and attitude required for autonomous operation ...
Tianzhu Gao, Yudong Luo, Na Zhao, Yufu Gao, Shengze Li, Xianping Fu, Xi Luo, Yantao Shen   +7 more
doaj   +1 more source

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

Comparative Assessment of Linear Induction Motor With Single Turn Stator Coils and German Silver Secondary for Rapid and Smooth Electromagnetic Launch

IEEE Access
Linear induction motor (LIM) assisted electromagnetic launch works on initial transient portion of dynamic thrust versus linear speed characteristics. The maximum speed (near the synchronous speed) of the mover (secondary member) depends on pole pitch ...
Anant Kumar, Lovesh Benedict Xaxa, R. K. Srivastava, R. K. Saket, Sanjeevikumar Padmanaban   +4 more
doaj   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source