Results 81 to 90 of about 9,875 (299)

Analysis and safety evaluation of steam turbine last stage blade vortex-induced response under deep peak shaving conditions

open access: yesJixie qiangdu
To compensate for the intermittency of renewable energy generation, coal-fired power units are required to operate under low-load conditions over a long time, which causes the last stage blades of steam turbine low-pressure cylinders under small flow ...
BIAN Long   +3 more
doaj  

Nonlinear Dynamics of the High-Speed Rotating Plate

open access: yesInternational Journal of Aerospace Engineering, 2018
High speed rotating blades are crucial components of modern large aircraft engines. The rotating blades under working condition frequently suffer from the aerodynamic, elastic and inertia loads, which may lead to large amplitude nonlinear oscillations ...
Minghui Yao, Li Ma, Wei Zhang
doaj   +1 more source

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

open access: yesAdvanced 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   +14 more
wiley   +1 more source

Determination of angle of attack for rotating blades

open access: yesINCAS BULLETIN, 2012
For a rotating blade the flow passing by a blade section is bended due to the rotation and the local flow field is influenced by the bound circulation on the blade. As a further complication, 3-D effects from tip and root vortices do a precise definition of the angle of attack (AOA) a difficult task.
Alexandru DUMITRACHE   +3 more
openaire   +2 more sources

A method for analysing fluid structure interactions on a horizontal axis tidal turbine

open access: yes, 2011
Free stream tidal turbines are rotating bodies in fast flowing tidal currents, and as such are exposed to fluctuating loads from the surrounding fluid.
Nicholls-Lee, R.F.   +2 more
core  

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

open access: yesAdvanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis   +7 more
wiley   +1 more source

Finite element analysis of flexible, rotating blades

open access: yes, 1987
A reference guide that can be used when using the finite element method to approximate the static and dynamic behavior of flexible, rotating blades is given.
Mcgee, Oliver G.
core  

VAWT with controlled blades : influence of wake of one turbine on power coefficient on the next turbine [PDF]

open access: yes, 2013
Power production from wind turbines is affected by several conditions like wind speed, turbine speed, turbine design, turbulence, changes of wind direct ion, wake of previous turbines.
SIMONET, Sophie   +2 more
core  

Generation of rotating intensity blades by superposing optical vortex beams

open access: yes, 2011
A kind of optical beam with controllable rotating intensity blades is generated by coaxially superposing two optical vortex beams with frequency difference (Delta omega), different topological charges (m(1) and m(2)) and equal amplitude.
Dexing Yang   +7 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

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