Results 101 to 110 of about 1,871 (299)

Stabilizer selection and formulation strategies for enhanced stability of single base nitrocellulose propellants: A review

Energetic Materials Frontiers
Stabilizers play a crucial role in preventing undesirable decomposition and degradation reactions of propellants, thus ensuring their long-term performance and safe storage.
Siti Nor Ain Rusly, Siti Hasnawati Jamal, Alinda Samsuri, Siti Aminah Mohd Noor, Khoirul Solehah Abdul Rahim   +4 more
doaj   +1 more source

Near‐Infrared‐Driven Metal–Organic Frameworks‐Based Nanorobots for Controlled Photothermal‐Chemical Therapy Synergistic Induction of Cancer Cell Death

Advanced Robotics Research, EarlyView.
To achieve efficient cancer cell death, a bowl‐shaped PDA@UiO‐66@DOX nanorobot drug‐delivery nanoplatform was developed. Near‐infrared irradiation not only drives the nanorobot to exhibit self‐thermophoretic motion and elevates temperature but also triggers Doxorubicin (DOX) release via hyperthermia, enhancing cancer cells uptake of DOX and thereby ...
Tong Lin, Jie Yang, Yongcheng Li, Yuepeng Cai, Xiaosong Zhou, Ting Chen, Renfeng Dong   +6 more
wiley   +1 more source

Green Propellant Infusion Mission Program Development and Technology Maturation

, 2014
The NASA Space Technology Mission Directorate's (STMD) Green Propellant Infusion Mission (GPIM) Technology Demonstration Mission (TDM) is comprised of a cross-cutting team of domestic spacecraft propulsion and storable green propellant technology experts.
McLean, Christopher H., Bacha, Caitlin E., Joniatis, John, Cardiff, Eric H., Deininger, William D., Bury, Kristen, Deans, Matthew, Spores, Ronald A., Aggarwal, Pravin K., Martinez, Jonathan, Yim, John T.   +10 more
core  

Self-Propelled Multi Tiller for Green Farming

International Journal of Scientific Research in Engineering and Management
Here, the design and performance analysis of a self-driven multi-tiller for small-scale and eco-friendly agriculture is described. The proposed system is designed to run on an electric power source with a voltage of 12V, utilizing multiple DC motors for both propulsion and tilling action.
Prof. Athith D, Prashanth B, T M Srikanth, Gautham M, Madhusudhan K S   +4 more
openaire   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Development of Nitrocellulose-based Propellants With Natural Stabilizers

Journal of Aerospace Technology and Management, 2020
Traditional stabilizers for nitrocellulose-based (NC-based) propellants are known to have carcinogenic, mutagenic and toxicity to reproduction potentials.
Rodrigo Leonard Barboza Rodrigues, Maurício Ferrapontoff Lemos, Tanos Celmar Costa França, Letivan Gonçalvez Mendonça Filho   +3 more
doaj  

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

Advanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He, Dehong Wang, Jing Li, Shijing Zhang, Yingxiang Liu   +4 more
wiley   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

A Novel Method of Improving the Mechanical Properties of Propellant Using Energetic Thermoplastic Elastomers with Bonding Groups

The relatively poor mechanical properties of extruded modified double base (EMDB) propellants limit their range of applications. To overcome these drawbacks, a novel method was proposed to introduce glycidyl azide polymer-based energetic thermoplastic ...
Haoyu Liu, Shixiong Sun, Yang Wang, Wenhao Du, Benbo Zhao, Yunjun Luo   +5 more
core   +1 more source

Pressure Drop Measurement of Porous Materials: Flashback Arrestors for a N2O/C2H4 Premixed Green Propellant

, 2016
For more than 50 years hydrazine (N2H4) has been the most favored monopropellant concerning propulsion of satellites or planetary probes. Due to changing political framework (e.g.the REACH regulation), growing commercial pressure as well as the need for ...
Ciezki, Helmut, Steffen Müller, Lukas K. Werling, Hauk, Andreas, Helmut K. Ciezki, Stefan Schlechtriem, Müller, Steffen, Andreas Hauk, Werling, Lukas, Schlechtriem, Stefan   +9 more
core   +1 more source