Results 21 to 30 of about 33,641 (337)

Design of Planetary Gear Train for Geared Rotary Actuator

IOP Conference Series: Materials Science and Engineering, 2021
Abstract Geared Rotary Actuators are mechanically operable devices widely used in the aerospace industry so that controlled motion can be provided to secondary flight control surfaces. Their usage can be seen in a variety of applications including powered hinges for aircraft structural movements, they support aerodynamic loads in ...
Yadnik Kude, Priya Gajjal, Anuj Kumar Singh   +2 more
openaire   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

Advanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source

Backlash Analysis of Gear Transmission of Parallel Uniform Planetary Gear

Jixie chuandong, 2018
Based on the NGW planetary gear transmission system,a gear transmission of parallel uniform planetary gear is proposed to reduce the transmission error of asteroid transmission system and improve its transmission accuracy.
Guo Jing, Zhu Zengbao, Liu Chun, Zhang Biao   +3 more
doaj  

A model for a flywheel automatic assistedmanual transmission [PDF]

, 2009
This paper is focused on the model and dynamical analysis of a flywheel assisted transmis- sion aiming at reducing the torque gap during gear shift manoeuvres. A completely passive device, consisting of a planetary gear set mounting a flywheel on the sun
A. Vigliani, Bosch Gmbh, E. Galvagno, Kulkarni, Kuroiwa, M. Velardocchia, Serrarens   +6 more
core   +1 more source

Planning and Control Framework for a Quadruped Robot With Changeable Configuration

Advanced Intelligent Systems, EarlyView.
Multiconfiguration quadruped robots enhance adaptability by switching between mammal‐like and reptile‐like morphologies. This study presents a nonlinear constraint‐based motion planner integrated with a hierarchical whole‐body controller, enabling robust configuration switching and locomotion on complex terrains. Experiments on slopes, irregular bricks,
Guanglin Lu, Yifan Zhang, Teng Chen, Xuewen Rong, Guoteng Zhang, Yibin Li   +5 more
wiley   +1 more source

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

Advanced Intelligent Systems, EarlyView.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee, Sumin Jung, Jinwoo Jang, Yeji Han, Minchae Kang, Jihun Seong, Suyeon Seo, Eunsol Park, Haesol Kwak, Min‐Woo Han   +9 more
wiley   +1 more source

Comparison and Implementation of a Rigid and a Flexible Multibody Planetary Gearbox Model [PDF]

, 2014
We propose algorithms for developing (1) a rigid (constrained) and (2) a flexible planetary gearbox model. The two methods are compared against each other and advantages/disadvantages of each method are discussed.
Amirouche, F. M.L., Ascher, U.M. and Petzold, L.R., Bae, D. and Haug, E., Gear, C., Geradin, M. and Cardona, A., Hairer, E. and Wanner, G., Hansen, A.M., Rasmussen, F., and Larsen, T.J., Haug, E.J., Huston, R.L. and Wang, Y., Jalon, J. G.d., Bayo, E., and Bahar, L.Y., Jens Nørkær Sørensen, Jørgensen, M.F., Pedersen, N.L., Sørensen, J.N., and Paulsen, U.S., Klit, P., Casper, K., and Pedersen, N.L., Martin Felix Jørgensen, Multiphysics, C., Niels Leergaard Pedersen, Nikravesh, P.E., Pedersen, N.L. and Jørgensen, M.F., Rasmussen, F., Hansen, A.M., and Larsen, T.J., Shabana, A.A., Ziegler, P., Eberhard, P., and Schweizer, B., Øye, S.   +21 more
core   +2 more sources

Determination of gear mesh stiffness in planetary gearing [PDF]

Vojnotehnicki glasnik, 2008
Gear mesh stiffness in planetary gearing is one of the main generators of internal dynamic forces. It is necessary in describing dynamic behavior of planetary trains, i.e. in defining their equations of dynamic balance. This paper presents a methodological approach to experimental and analytical calculation of stiffness in planetary gearing. .
openaire   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

The Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen, Ivo Jacobs, Kristina Kverková, Lona Lalić, Alexandra Polonyiová, Patrik Stehlík, Stephan A. Reber, Mathias Osvath   +7 more
wiley   +1 more source

Analysis of the Distribution and Transmission Law of Vibration Energy of Planetary Gear

Jixie chuandong, 2016
Based on a torsional- transverse coupling model of a 2K- H spur planetary gear,the formula of vibration energy of the planetary gear transmission system is derived.
Wu Yuchao, Ma Chaofeng, Liu Kai, Fu Yu, Dou Kai   +4 more
doaj