Results 161 to 170 of about 21,138 (312)

Hydrogen arcjet technology [PDF]

During the 1960's, a substantial research effort was centered on the development of arcjets for space propulsion applications. The majority of the work was at the 30 kW power level with some work at 1-2 kW. At the end of the research effort, the hydrogen
Curran, Francis M., Haag, Thomas W., Hamley, John A., Sankovic, John M., Sarmiento, Charles J.   +4 more
core   +1 more source

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

Advanced Robotics Research, EarlyView.
Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira, Liao Wu, Ming Li, Priyank Kumar, Xiaopeng Li, Shi‐Yang Tang   +5 more
wiley   +1 more source

Analysis on the Air-Gap Magnetic Field and Force of the Linear Synchronous Motor with Different Winding Distribution. [PDF]

Micromachines (Basel)
Bai J, Zhang L, Xu Y.
europepmc   +1 more source

The effects of arcjet operating condition and constrictor geometry on the plasma plume [PDF]

Measurements of plasma number density and electron temperature were obtained in the plumes of lab arcjet thrusters using electrostatic probes of both spherical and cylindrical geometry.
Carney, Lynnette M., Sankovic, John M.
core   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

Advanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Investigation of a staggered dual-rotor wound field synchronous motor for offshore wind turbine full-scale testing platforms. [PDF]

Sci Rep
Xue Y, Qin S, Qi C, Wang N, Liu C, Zhao W.   +5 more
europepmc   +1 more source

Extended performance solar electric propulsion thrust system study. Volume 1: Executive summary [PDF]

Several thrust system design concepts were evaluated and compared using the specifications of the most advanced 30 cm engineering model thruster as the technology base.
Hawthorne, E. I., Poeschel, R. L.
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

Distinct kinematics and micromorphology for symmetrical rowing and sliding on water in ripple bugs and water striders. [PDF]

Sci Rep
Bang SY, Kim W, Lee J, Park J, Khare V, Lee SI, Jablonski PG.   +6 more
europepmc   +1 more source

Response of Paleogene Fine-Grained Clastic Rock Deposits in the South Qiangtang Basin to Environments and Thermal Events on the Qinghai-Tibet Plateau. [PDF]

ACS Omega, 2023
Zhang Z, Li H, Zheng W, Whattam SA, Zhu Z, Jiang W, Zhao D.   +6 more
europepmc   +1 more source