Results 11 to 20 of about 2,856,396 (297)

Planetary transmission load sharing: Manufacturing errors and system configuration study

Mechanism and Machine Theory, 2017
This paper addresses the effect of manufacturing errors such as eccentricity and planet pin positioning errors on the quasi-static behavior of a 3 planet planetary transmission, taking into account different configurations regarding the bearing condition
M. Iglesias, A. F. Rincón, A. De-Juan, P. García, A. Diez-Ibarbia, F. Viadero   +5 more
semanticscholar   +3 more sources

Modeling and Analysis of Transmission Efficiency for 3K Planetary Gearbox with Flexure-Based Carrier for Backdrivable Robot Joints

Actuators
A high-gear-ratio anti-backlash 3K planetary gearbox with a preloaded flexure-based carrier is a suitable reducer for robot joints owning to its compact design and high transmission accuracy.
Qinghao Du, Guilin Yang, Weijun Wang, Chin-Yin Chen, Zaojun Fang   +4 more
doaj   +2 more sources

Near-Infrared Transmission Spectroscopy of HAT-P-18 b with NIRISS: Disentangling Planetary and Stellar Features in the Era of JWST [PDF]

Monthly notices of the Royal Astronomical Society, 2023
The JWST Early Release Observations (ERO) included a NIRISS/SOSS (0.6–2.8 μm) transit of the ∼ 850 K Saturn-mass exoplanet HAT-P-18 b. Initial analysis of these data reported detections of water, escaping helium, and haze. However, active K dwarfs like
Marylou Fournier-Tondreau, R. MacDonald, M. Radica, D. Lafrèniere, L. Welbanks, C. Piaulet, L. Coulombe, R. Allart, Kim Morel, É. Artigau, L. Albert, O. Lim, R. Doyon, B. Benneke, Jason F. Rowe, A. Darveau-Bernier, Nicolas B. Cowan, N. Lewis, N. Cook, L. Flagg, Frédéric Genest, S. Pelletier, D. Johnstone, L. Dang, L. Kaltenegger, Jake Taylor, J. Turner   +26 more
semanticscholar   +1 more source

Fatigue Reliability Prediction Method of Large Aviation Planetary System Based on Hierarchical Finite Element

Metals, 2022
The reliability of planetary equipment determines the economic affordability and service safety, to a large extent, for a helicopter transmission system.
Ming Li, Yuan Luo, Liyang Xie
doaj   +1 more source

Dual-Motor Planetary Transmission to Improve Efficiency in Electric Vehicles

Machines, 2021
Electric cars are typically subject to highly variable operational conditions, especially when they drive in urban environments. Consequently, the efficiency of the electric motors may degrade significantly, possibly leading to lower autonomy and higher ...
G. Mantriota, G. Reina
semanticscholar   +1 more source

Fuel Control Systems for Planetary Transmission Vehicles: A Contribution to the LPG-fueled Vehicles Community

Mechanical Engineering for Society and Industry, 2021
The bi-fuel system vehicle (gasoline/LPG) has been developed for a long time because it has the ability to switch fuels, both built as an original equipment manufacturer (OEM) or as a modified vehicle.
S. Munahar, B. Purnomo, Hasan Köten
semanticscholar   +1 more source

Meshing impact analysis of planetary transmission system considering the influence of multiple errors and its effect on the load sharing and dynamic load factor characteristics of the system

, 2021
The meshing impact on transmission system and internal meshing gear pair and its impact on the load sharing and dynamic characteristics of the system are not well understood yet.
Shengyang Hu, Z. Fang, Yingqiang Xu, Yabin Guan, Rui Shen   +4 more
semanticscholar   +1 more source

Fault diagnosis method of shearer planetary gear transmission systemunder variable speed conditions

Gong-kuang zidonghua, 2021
When the shearer cuts the coal seam, the planetary gear transmission system of the traction unit is in a variable speed working condition, and the structure of the planetary gear transmission system is complicated.
MAO Qinghua1,2,, ZHANG Yongqiang1,2, ZHAO Xiaoyong3, ZHANG Xuhui1,2, FAN Hongwei1,2, ZHANG Fei1,2   +5 more
doaj   +1 more source

The GAPS programme at TNG XXII. The GIARPS view of the extended helium atmosphere of HD189733 b accounting for stellar activity [PDF]

, 2020
Exoplanets orbiting very close to their host star are strongly irradiated. This can lead the upper atmospheric layers to expand and evaporate into space.
Affer, L., Andretta, V., Baffa, C., Baruffolo, A., Benatti, S., Biazzo, K., Bignamini, A., Bonomo, A. S., Borsa, F., Boschin, W., Bourrier, V., Brogi, M., Bruno, G., Carleo, I., Cecconi, M., Claudi, R., Cosentino, R., Covino, E., Damasso, M., Desidera, M., Esposito, M., Falcini, G., Fiorenzano, A. F. Martinez, Fossati, L., Frustagli, G., Ghedina, A., Giacobbe, P., Giampapa, M. S., González-Álvarez, E., Guerra, J., Guilluy, G., Harutyunyan, A., Hernandez, N., Lanza, A. F., Leto, G., Maggio, A., Malavolta, L., Maldonado, J., Mancini, L., Micela, G., Molinari, E., Nascimbeni, V., Pagano, I., Pedani, M., Pino, L., Piotto, G., Poretti, E., Rainer, M., Reiners, A., Scandariato, G., Sozzetti, A.   +50 more
core   +2 more sources

Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]

, 2011
The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Cheng, Zhe, Gu, Fengshou, Hu, Niaoqing, Qin, Guojun   +3 more
core   +1 more source