Results 21 to 30 of about 23,365 (215)

Demonstration of dual-thrust capability in hybrid rockets using multi-layered tubular fuel grains

FirePhysChem
This study demonstrates the thrust modulation capabilities of a hybrid rocket motor employing a Multi-Layered Tubular (MLT) fuel grain. The MLT configuration involves arranging the fuel grains with distinct regression rates as layers.
Mengu Dinesh, Sachin Sonage, Kumar Nagendra   +2 more
doaj   +1 more source

Three-Body Dynamics and Self-Powering of an Electrodynamic Tether in a Plasmasphere [PDF]

, 2010
The dynamics of an electrodynamic tether in a three-body gravitational environment are investigated. In the classical two-body scenario the extraction of power is at the expense of orbital kinetic energy.
Bombardelli C., C. Bombardelli, Colombo G., D. Curreli, D. Scheeres, Dobrowolny M., E. C. Lorenzini, Farquhar R. W., Gabriel S. B., Gilchrist B. E., J. Pelaez, M. Lara, M. Sanjurjo-Rivo, Misra A. K., Peláez J., Peláez J., Peláez J., Peláez J., Penzo P., Sanjurjo-Rivo M., Sanmartín J. R., Shampine L. F., Szebehely V., Wong B.   +23 more
core   +2 more sources

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Energy-Entropy-Momentum integration of discrete thermo-visco-elastic dynamics. [PDF]

, 2011
A novel time integration scheme is presented for the numerical solution of the dynamics of discrete systems consisting of point masses and thermo-visco-elastic springs.
García Orden, Juan Carlos, Romero Olleros, Ignacio   +1 more
core   +1 more source

Visualizing and Quantifying Impact with Mechanochromic Sensing Paints Based on Self‐Assembled Polydiacetylene‐Silk Core‐Shell Vesicles

Advanced Science, EarlyView.
Tracking physical impacts is important in many fields. Self‐assembled microparticles made from polydiacetylene and silk fibroin that change color from blue to red when hit can provide an alternative approach to traditional mechanical transducers, quantitatively visualizing impact with responses ranging from <100 to 770 N.
Marco Lo Presti, Giulia Guidetti, Elisabetta Ruggeri, Terri Lyne Carrington, Fiorenzo G. Omenetto   +4 more
wiley   +1 more source

Direct Recycling of Mixed‐Oxide Cathodes: Balancing Cost, Performance and Environmental Trade‐Offs

Advanced Science, EarlyView.
Direct regeneration routes for mixed‐oxide lithium‐ion battery cathodes are systematically compared using harmonized techno‐economic, electrochemical, and environmental metrics. Solid‐state, hydrothermal, molten salt, electrochemical, and chemical relithiation methods are benchmarked to identify performance, cost, and sustainability trade‐offs.
Evgenii Beletskii, Elizaveta Evshchik, Anna Shikhovtseva, Valery Kolmakov, Andrey Popov, Svetlana Eliseeva, Lyubov Shmygleva, Yurii K. Gun'ko, Valentin Romanovski   +8 more
wiley   +1 more source

Applications of Various Methods of Analysis to Combustion Instabilities in Solid Propellant Rockets [PDF]

, 1996
Instabilities of motions in a combustion chamber are consequences of the coupled dynamics of combustion processes and of the flow in the chamber. The extreme complexities of the problem always require approximations of various sorts to make progress in
Culick, F. E. C., Roh, T. S.
core  

Synchronized orbits and oscillations for free altitude control [PDF]

, 2014
No abstract ...
Ceriotti, Matteo, Harkness, Patrick, McRobb, Malcolm   +2 more
core   +1 more source

Understanding the Roles of Microstructure and Viscoelasticity of Soft Ionic Elastomer for Super‐Capacitive Pressure Sensors

Advanced Science, EarlyView.
By engineering the PVA/H3PO4 ionic elastomer with optimized viscoelasticity and a height‐graded microstructure, the pressure sensor achieves a broad linear range up to 2000 kPa and a high sensitivity of 2.70 nF/kPa. These advancements underscore its strong potential for wearable electronics, including bio‐signal detection, health monitoring, and ...
Allen J. Cheng, Wenkai Chang, Zhuohan Cao, Zhao Sha, Shuai He, Ming Xuan Chua, Bingnong Jiang, Yuansen Qiao, Ziyan Gao, Wenkui Dong, Wengui Li, Liao Wu, Dewei Chu, Shuhua Peng   +13 more
wiley   +1 more source

Overview of Combustion Instabilities in Liquid-Propellant Rocket Engines [PDF]

, 1995
N/
Culick, Fred E. C., Yang, Vigor
core