Results 91 to 100 of about 490,047 (238)

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Misalignment diagnosis of a planetary gearbox based on vibration analysis [PDF]

, 2014
As a critical power transmission system, planetary gearbox is widely used in many industrial important machines such as wind turbines, aircraft turbine engines, helicopters.
Gu, Fengshou, Ball, Andrew, Zhen, Dong, Abdalla, Gaballa, Tian, Xiange   +4 more
core   +2 more sources

Formation of Super-Earths and Mini-Neptunes from Rings of Planetesimals

The Astrophysical Journal Letters
The solar system's planetary architecture has been proposed to be consistent with the terrestrial and giant planets forming from material rings at ∼1 au and ∼5 au, respectively.
Sho Shibata, Andre Izidoro
doaj   +1 more source

Normality in group rings [PDF]

, 2008
Let KG be the group ring of a group G over a commutative ring K with unity. The rings KG are described for which xx(sigma)=x(sigma)x for all x=∑(g∈G)alfa(g)g∈KG, where x↦x(sigma)=∑(g∈G)alfa(g)f(g)sigma(g) is an involution of KG; here f:G→U(K) is a ...
Bódi, Viktor, Siciliano, S.
core   +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

Planet Migration in Protoplanetary Disks with Rims

The Astrophysical Journal
Complex structures, including sharp edges, rings, and gaps, have been commonly observed in protoplanetary disks with or without planetary candidates. Here we consider the possibility that they are the intrinsic consequences of angular momentum transfer ...
Zhuoya Cao, Ya-Ping Li, Douglas N.C. Lin, Shude Mao   +3 more
doaj   +1 more source

Planetary Ring Systems

Eos, Transactions American Geophysical Union, 2008
Life used to be simple for ring scientists. Since the time of Galileo, anyone with even the most basic telescope could see that Saturn was the only planet with rings. Saturn's ring system is clearly bright, broad, and bland. James Clerk Maxwell proved that the rings could not be solid, and basic spectroscopy showed that they are composed primarily of ...
openaire   +1 more source

The Planetary Rings Node

The Planetary Rings Node of the Planetary Data System is devoted to archiving, cataloging and distributing scientific data sets relevant to planetary ring systems.

core  

Socle conditions for QF-1 rings [PDF]

, 1973
Ringel CM. Socle conditions for QF-1 rings. Pacific Journal of Mathematics.
Ringel, Claus Michael
core  

Autonomous Locomotion of Tensegrity Structure on Low‐Temperature Surfaces

Advanced Robotics Research, EarlyView.
A low‐temperature responsive tensegrity structure (LRTS) is constructed by integrating low‐responsive temperature liquid crystal elastomer (LCE) cables, nonresponsive cables, and stiff rods. The low phase transition temperature of LCE is achieved by introducing a new liquid crystal mesogen.
Changyue Liu, Kai Li, Tianyu Li, Zixuan Wang, Jiping Yang, Zhijian Wang   +5 more
wiley   +1 more source