Results 51 to 60 of about 62,246 (314)

Cosine Gear Planetary Transmission with Small Teeth Number Difference

IOP Conference Series: Materials Science and Engineering, 2020
Abstract This paper presents a model of cosine gear planetary transmission with small number teeth difference (CG_PTSTD). Firstly, the mathematical model of the CG_PTSTD is established based on the theory of engagement, including the equations of the conjugate internal gear and the meshing line.
Chuanrui Si, Zhitong Chen, Hongyao Zhang, Yun Zhang, Chuanhui Cui   +4 more
openaire   +1 more source

Reliability Evaluation of Transmission Planetary Gears “bottom-up” approach

Eksploatacja i Niezawodność – Maintenance and Reliability, 2023
The reliability study is the most important part of the engineering design process, as it is the basis of analysis and assessment of future product performance in exploitation. Since performance cannot be predicted with absolute certainty, the application of reliability theory includes probability theory and unreliability modeling.
Predrag Živković, Miroslav Milutinović, Milan Tica, Spasoje Trifković, Ivica Čamagić   +4 more
openaire   +1 more source

NASA helicopter transmission system technology program [PDF]

, 1983
The purpose of the NASA Helicopter Transmission System Technology Program is to improve specific mechanical components and the technology for combining these into advanced drive systems to make helicopters more viable and cost competitive for commerical ...
Zaretsky, E. V.
core   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Analysis of Coupling Characteristic of the Planetary Multi-stage Gear Transmission System

Jixie chuandong, 2017
In order to study the coupling vibration mechanism of the planetary multi-stage gear transmission system,the dimensionless dynamics equations of the planetary multi-stage gear transmission system which contains a two-stage fixed-axis gear and a one-stage
Wang Xin, Li Yousheng
doaj  

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 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  

A Study on Coupling Faults’ Characteristics of Fixed-Axis Gear Crack and Planetary Gear Wear

Shock and Vibration, 2018
To identify the fault frequency characteristics of the gear transmission system under coupling fault of fixed-axis gear crack and planetary gear wear, dimensionless dynamical equations of gear transmission system were established.
Xin Wang
doaj   +1 more source

Design of an advanced 500-hp helicopter transmission [PDF]

, 1983
High contact ratio spar gears planetary, spiral besel gears, bearings, investment-cast planet carrier, and investment cast stainless-steel housings are ...
Battles, R. A., Braddock, C. E.
core   +1 more source

Hunting and fishing harvest data collection: a horizon scanning exercise from the French context

Wildlife Biology, EarlyView.
Legal and societal moves increasingly lead leisure hunting and fishing practitioners to record their harvest. The total number of individuals harvested per population per year is the minimum required information to feed into demographic models and allow science‐based management. Some few schemes record more detailed data, hence allowing better‐informed
Matthieu Guillemain, Léo Bacon, Aurélie Barboiron, Pierre Defos du Rau, Cyril Eraud, Aurélie Flesselle, Charlotte Francesiaz, Quentin Josset, Yoann Lechauve, Kevin Le Rest, Hervé Lormée, Maxime Passerault, Maryline Pellerin, Caroline Penil, Betty Plaquin, Adrien Tableau, Julien Terraube, Laurent Beaulaton   +17 more
wiley   +1 more source