Results 71 to 80 of about 1,282,048 (295)

A Framework to Estimate Local Atmospheric Densities With Reduced Drag‐Coefficient Biases

open access: yesSpace Weather, 2022
An accurate estimation of upper atmospheric densities is crucial for precise orbit determination (POD), prediction of low Earth orbit satellites, and scientific studies of the Earth's atmosphere.
Vishal Ray   +4 more
doaj   +1 more source

Numerical Modeling of Photothermal Self‐Excited Composite Oscillators

open access: yesAdvanced Robotics Research, EarlyView.
We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu   +6 more
wiley   +1 more source

Aerodynamic analysis of wind turbine blades: A numerical study

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi
In this study, the aerodynamic performance of different wind turbine blades including FX 63-137, NACA 6415, NACA 63-415 has been investigated. XFLR5 has been employed to analyze the wind turbine blade at Reynolds numbers ranging from 1.5x105 to 1x106 and
İlker Yılmaz   +2 more
doaj   +1 more source

An assessment of sphere drag coefficient data [PDF]

open access: yes, 1969
Wind tunnel test data for falling sphere drag coefficient ...
Heinrich, H. G., Noreen, R. A.
core  

Modular, Textile‐Based Soft Robotic Grippers for Agricultural Produce Handling

open access: yesAdvanced Robotics Research, EarlyView.
This article introduces textile‐based pneumatic grippers that transform simple textiles into robust bending actuators. Detailed experiments uncover how cut geometry and fabric selection shape performance. Successful handling of fragile agricultural items showcases the potential of textile robotics for safe, scalable automation in food processing and ...
Zeyu Hou   +4 more
wiley   +1 more source

Design and numerical analysis of bicycle driver compartment area through CFD simulation

open access: yesResults in Engineering
Upright-seat bicycles exhibit poor aerodynamics, with both rider and bicycle generating significant drag intensified by wind resistance, cold air, and rainfall.
Boru Godana Golo   +3 more
doaj   +1 more source

Push the Limits: Human‐Like Multimodal Extreme Embodied Intelligence for Autonomous Racing

open access: yesAdvanced Robotics Research, EarlyView.
Autonomous racing tests embodied intelligence under extreme control limits of speed, actuation, and decision‐making. Inspired by human multimodality, we present Apex, an embodied agent deployed on a super‐formula racing car at Yas Marina. Integrating physics‐informed perception, multimodal learning, and tasking, Apex cuts lap times by 15% and achieves ...
Yanxin Zhou   +13 more
wiley   +1 more source

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

open access: yesAdvanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali   +6 more
wiley   +1 more source

Investigation of relationship between drag and lift coefficients for a generic car model [PDF]

open access: yes, 2014
The paper presents a study of aerodynamic characteristics of a car, which has the simplified geometric shape, so called Ahmed body. Flow around the body and the influence of its rear slant angle on drag are widely studied by numerous researchers. However,
MASSOUH, Fawaz, DOBREV, Ivan
core  

Wireless Precise Manipulation of Tumor Spheroids Using a Millirobot Controlled by Permanent Magnetic Traps

open access: yesAdvanced Robotics Research, EarlyView.
A magnetic donut‐like millirobot is developed for label‐free pick‐and‐place of a tumor spheroid wirelessly controlled by a magnetic trap. Spheroids are important 3D multicellular culture systems that recapitulate key structural and functional features of native tissues.
Yue Gao   +8 more
wiley   +1 more source

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