Results 101 to 110 of about 12,339 (306)

On–Off Switchable Micromotors for Use in Steerable Microvehicles

Advanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson, Eswaran Murugasen, Jose G. Martinez, Edwin W. H. Jager   +3 more
wiley   +1 more source

Propelente sólido compósito polibutadiênico: I- influência do agente de ligação

Química Nova, 2002
In the Brazilian Complete Spacial Mission, the research of Vehicle Satellite Launcher is important. The solid propellant composite used in this vehicle is made with ammonium perchlorate, aluminiun powder and hydroxy terminated polibutadiene resin. In the
Sciamareli Jairo, Takahashi Marta Ferreira Koyama, Teixeira José Maria, Iha Koshun   +3 more
doaj  

The Synergistic Effect of Fe-Based MOFs and HTPB on AP Decomposition in Solid Propellants

Solids
Many factors and their mutual interaction between catalysts and AP/HTPB composite solid propellant induce the complexity in the combustion. Among them, we prepared two Fe-based MOFs as catalysts and investigated their catalytic effects and mechanism on ...
Qian Guo, Jie Wang, Yanchun Li, Ramón Artiaga   +3 more
doaj   +1 more source

Hydrogen peroxide - from bridesmaid to bride

, 2006
The criticisms raised by John Clark concerning the use of hydrogen peroxide as a future rocket propellant are revisited. These criticisms focus on five important issues associated with detonation hazards, consequences of contamination, stability in ...
Musker, A.J., Rusek, J.J., Kappenstein, C., Roberts, G.T.   +3 more
core  

Burning rate enhancement of AN-propellants by TAGN and GZT

, 2013
S.22.1-22.19To overcome the disillusioning combustion behavior of AN propellants, burn rate augmentations by TAGN and GZT have been investigated on a propellant system based on ammonium nitrate, GAP/PolyGLYN and nitrate ester plasticizers .
Weiser, V., Menke, K., Schnöring, M., Böhnlein-Mauß, J., Gunser, G.   +4 more
core   +1 more source

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source

Effect Of Propellant Formulation On Propellant Properties

, 2018
This paper present the effect of propellant formulations on propellant properties is very crucial to the quality of propellant used in rocket motor. As poor propellant formulation usually leads to unstable combustion and this can lead to a total destruction of the entire structure of the solid rocket motor.
openaire   +2 more sources

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Bestimmung des Zersetzungsverhaltens von zwei-basigen Treibstoffen bei niedriger Temperatur

, 2022
S.181-186Thermal and mechanical stability are very important characterstics of energetic materials used as ingredients of propellants compositions. For the determination of the thermal decomposition behavior of solid double base propellants, usually ...
Wunsch, G., Volk, F.
core  

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