Results 141 to 150 of about 90,052 (317)

Spacecraft

, 2003
Biblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 planta; 28014 Madrid; Tel.
openaire   +1 more source

Application of discrete time sliding mode control to a spacecraft in 6DoF

This paper presents the application of two separate discrete time sliding mode controllers, developed in conjunction with a potential function guidance method, to provide control in both position and attitude for a rigid, holonomic spacecraft body.
Veres, Sandor M., Lincoln, Nicholas K.
core  

Laboratory experiments of resident space object capture by a spacecraft-manipulator system [PDF]

, 2017
The article of record as published may be found at http://dx.doi.org/10.1016/j.ast.2017.09.043A set of laboratory experiments are conducted to demonstrate the autonomous capture of a simulated resident space object by a simulated spacecraft equipped with
Virgili-Llop, Josep, Zappulla, Richard II, Drew, Jerry V., Romano, Marcello   +3 more
core  

Charge Storage, Conductivity and Charge Profiles of Insulators As Related to Spacecraft Charging

, 2003
Dissipation of charges built up near the surface of insulators due to space environment interaction is central to understanding spacecraft charging. Conductivity of insulating materials is key to determine how accumulated charge will distribute across ...
Dennison, J. R., Swaminathan, Prasanna, Frederickson, A. R., Dennison, John R.   +3 more
core  

Spacecraft Vibration Using Pulse-Width Pulse-Frequency Modulated Input Shaper [PDF]

, 1997
The article of record as published may be found at http://dx.doi.org/10.2514/6.1997-3748Minimizing vibrations of a flexible spacecraft actuated by on-off thrusters is a challenging task.
Song, Gangbing, Agrawal, Brij N., Buck, Nick V.   +2 more
core  

Development of and adherence to artificial gravity and resistive vibration exercises during 60 days of hypoxic 6° head‐down tilt bed rest: BRAVE study

Experimental Physiology, EarlyView.
Abstract Artificial gravity (AG) combined with resistive vibration exercise has been proposed as a multi‐system countermeasure for long‐duration spaceflight; however, its operational feasibility during prolonged unloading remains insufficiently characterised.
Jack Fortune, Riccardo G. Sorrentino, Spyridon Zamantzas, Victorien Faivre‐Rampant, Lydia Tsoutsoubi, Adam C. McDonnell, Jason T. Fisher, Sara Podgornik, Leonidas G. Ioannou, Urša Ciuha, Igor B. Mekjavic   +10 more
wiley   +1 more source

Effect of vacuum and air heat treatments on the properties of the electroless Ni−P coating on magnesium alloy

Materials Research Express
Electroless Ni−P coatings on magnesium alloy specimens were heat-treated in vacuum and air atmospheres at 200 °C, 250 °C, and 300 °C. The results showed that the coating grains evolved into fine nodular structures following heat treatment at 200 °C and ...
Sizhen Li, Jinhua Yu, Yan Zheng, Yeshen Qin, Lianjing Zhao, Li Feng, Yunyan Liu, Jingying Bai, Qingxin Cui, Ligong Zhang, Jiaqiang Zhang, Haoran Sun   +11 more
doaj   +1 more source

Autonomous Formation Flying at DLR's German Space Operations Center (GSOC)

, 2007
In the upcoming years, significant changes in the profile of satellite missions are expected as scientists and managers want to benefit from multi-satellite missions.
Gill, Eberhard, Rupp, Thomas, D'Amico, Simone, Montenbruck, Oliver   +3 more
core  

Engineering Polymeric Membranes for CO₂ Separation: Materials, Fabrication, Challenges, and Future Perspectives

Carbon Neutralization, Volume 5, Issue 4, July 2026.
Overview of polymeric and mixed‐matrix membranes for CO₂ separation, highlighting key materials, fabrication techniques, performance challenges, and innovations supporting industrial decarbonization and sustainable development. ABSTRACT Carbon dioxide (CO₂) emissions from anthropogenic sources are major contributors to global warming and climate change,
Muhammad Mansha, Noreen Abass, Faizah Altaf, Shehzada Muhammad Sajid Jillani, Safyan Akram Khan, Shahid Ali   +5 more
wiley   +1 more source

Electrolyte Design Strategies for High‐Energy‐Density Li/Na/K‐Metal Batteries Toward Grid‐Scale Energy Storage: From Liquid to Solid

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
This review summarizes key parameters including cathode loading and electrolyte consumption, clarifies the practical application scope of alkali metal batteries, and research progress on advanced electrolytes for grid‐scale energy storage systems. The growing demand for grid‐scale battery energy storage systems (BESSs) has prompted researchers to turn ...
Hui Shao, Zhiwei Ni, Jinkui Feng
wiley   +1 more source