Results 101 to 110 of about 1,557,568 (278)

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

Advanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali, Abdurrahim Yilmaz, Meysam Keshavarz, Jinshi Zhao, Ara Darzi, Eric Yeatman, Burak Temelkuran   +6 more
wiley   +1 more source

Future European Expendable Launcher Options and Technology Preparation [PDF]

, 2008
The paper describes latest results of the most recent activities in Germany in the technical assessment of future European launcher architecture. In a joint effort of DLR-SART with German launcher industry a next generation upper-medium class expendable ...
Gerstmann, Jens, Jäger, Markus, van Foreest, Arnold, Klevanski, Josef, Philip, Peter, Sippel, Martin, Dutheil, Jean-Philippe   +6 more
core  

Development of high burn rate propellant and testing in miniature rocket motor for control applications

FirePhysChem
For aerospace vehicles, notably missiles or satellites for attitude and divert control, impulsive thrusters are most desirable if they are quantized as exact instantaneous pulses available over and after extended periods of inactive storage.
Y. Raj Alexander, Nikunj Rathi, P.A. Ramakrishna   +2 more
doaj   +1 more source

Stiffness‐Programmable Origami Robots With Tendon‐Driven Actuation via Multimaterial 3D Printing

Advanced Robotics Research, EarlyView.
Motion diversity is achieved in a tendon‐driven origami robot through programmable stiffness rather than modified actuation. Multimaterial 3D printing embeds soft creases, modular inserts redirect identical tendon inputs into distinct behaviors, and variable‐stiffness inserts enable real‐time switching.
Elisha Lerner, Jianguo Zhao
wiley   +1 more source

Cell‐Based Biohybrid Micro/Nanorobots for Biotherapy

Advanced Robotics Research, EarlyView.
This review systematically evaluates cell‐based biohybrid micro/nanorobots (CB‐BMRs), highlighting their cell selection criteria, fabrication strategies, and diverse actuation modes. Furthermore, it surveys the promising therapeutic applications of CB‐BMRs in targeted cancer, thrombosis, and inflammation treatments, while comprehensively discussing ...
Lin Wang, Chenlu Liu, Yu Zhao, Chuanhua Li, Xuyang Chen, Shixiao Ding, Lizhou Dai, Guokun Wang, Tianlong Li, Jiaxin Li, Xuejia Liu, Haocheng Wang   +11 more
wiley   +1 more source

Magnetically Actuated Microrobot for Drug Delivery: Current Progress and Challenges

Advanced Robotics Research, EarlyView.
Magnetically actuated microrobots are reshaping targeted drug delivery through wireless propulsion, programmable materials, and localized therapeutic release. This review examines how fabrication, body material selection, structural architecture, loading mechanisms, and imaging‐guided control converge to enable microrobotic therapies while identifying ...
Yang Yang, David J. Cappelleri
wiley   +1 more source

An experimental study on the erosion of solid propellant by cavitation water jet in submerged environment

Polymer Testing
The submerged cavitation water jet (SCWJ) is a promising technology for removing solid propellant from old solid rocket engines and recycling them. In this study, the feasibility of using SCWJ to break solid propellant is investigated.
Wenjun Zhou, Bo Liu, Meng Zhao, Xuanjun Wang   +3 more
doaj   +1 more source

Advanced Flexible Robotic Systems for the Early Diagnosis and Treatment of Cancer and Cardiovascular Diseases

Advanced Robotics Research, EarlyView.
Flexible surgical robots are advancing minimally invasive interventions for cardiovascular diseases and cancer by enabling precise navigation through complex, submillimeter anatomical pathways. This review highlights recent innovations in actuation, bio‐integrated sensing, AI‐assisted control, and friction‐reduction technologies, discusses current ...
Hermione Truong, Chi Cong Nguyen, Hannah Thuy Truong, Kefan Zhu, Adrienne Ji, James Davies, Emanuele Nicotra, Bibhu Sharma, Jingjing Wan, Patrick Pruscino, Shing Wai Wong, Hoang‐Phuong Phan, Phuoc Thien Phan, Nigel H. Lovell, Thanh Nho Do   +14 more
wiley   +1 more source

Solid propellant rocket motor [PDF]

, 1973
The characteristics of a solid propellant rocket engine with a controlled rate of thrust buildup to a desired thrust level are discussed. The engine uses a regressive burning controlled flow solid propellant igniter and a progressive burning main solid ...
Behm, J. W., Strand, L. D., Shafer, J. I., Dowler, W. L.   +3 more
core  

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

Advanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong, James Trevarthen, Igor Dolbnya, Wadwan Singhapong, Nicholas Pilato, Richard Butler, Jiraphant Srisuriyachot, Alexander J. G. Lunt   +7 more
wiley   +1 more source