Results 101 to 110 of about 2,466 (307)

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Self-Extinguishable Solid Propellant

, 2012
Solid composite propellant compositions include at least one fuel, at least one oxidizing agent, at least one binder, and at least one sufactant. The surfactant provides the solid propellant the property of being self-extinguishing , where the burning ...
Petersen, Eric, Carro, Rodolphe, Sammet, Thomas, Reid, David, Seal, Sudipta, Lepage, Alexander, Stephens, Matthew   +6 more
core  

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Inhibiting aluminum agglomeration and enhancing combustion in composite propellants via perfluoropolyether

Results in Engineering
Aluminum powder is widely incorporated into solid propellants to boost their specific impulse, yet its coalescence into large agglomerates during combustion impairs ballistic performance by reducing combustion efficiency, increasing two-phase flow losses,
Wenchao Zhang, Zhan Wen, Yao Shu, Qingyun Sheng, Yanfeng Jiang, Mingming Zhan, Peijin Liu, Wen Ao   +7 more
doaj   +1 more source

Influence of time on bond characteristics between extruded PVC tube and cast HTPB/IPDI rocket propellant [PDF]

Scientific Technical Review, 2017
This paper is dealing about the possibility of using thermoplastic material as an inhibitor for solid composite propellant in a long period of time. A basic point in this consideration is an analysis of bond characteristics between the extruded PVC tube ...
Radulović Jovan, Milojković Aleksandar
doaj  

The Mechanical Response of a Composite Propellant under Harsh Conditions

, 2017
The aim of this paper is to study the mechanical properties of HTPB (Hydroxyl-terminated polybutadiene) composite propellant under harsh conditions. It describes two tests involving uniaxial tensile tests of various strain rates (ranging from 0.0005 s-1 ...
Jin-sheng Xu, Xiong Chen, Xin Tong, Ya Zheng   +3 more
core   +1 more source

In Situ Photopolymerization of Smectic B Liquid‐Crystalline Electrolytes from Mesogenic Phosphate–Diacrylate/Ionic Liquid Complexes for High‐Performance Soft Ionic Actuators

Advanced Robotics Research, EarlyView.
A flexible liquid‐crystalline electrolyte membrane via in situ photopolymerization of a phosphate‐functionalized mesogen, ionic liquid, and diacrylate monomer is developed. The resulting smectic B (SmB)‐phase structure enables 2D ion transport with high conductivity (10−4 S cm−1).
Chengyang Liu, Masafumi Yoshio
wiley   +1 more source

Effect of oxidizer-fuel mixture ratio to the pressure exponent of ammonium perchlorate based composite propellant

, 2011
In this paper, experimental investigation of pressure exponent in burning rate of composite propellant was conducted. Four sets of different propellant compositions had been prepared with the combination of Ammonium Perchlorate (AP) as an oxidizer ...
Wan Ali, Wan Khairuddin, Wan Khairuddin bin Wan Ali, Amir Aziz, Aziz, Amir   +3 more
core   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source