Results 21 to 30 of about 7,662 (263)

Environment variables affect CPUE and spatial distribution of fishing grounds on the light falling gear fishery in the northwest Indian Ocean at different time scales

open access: yesFrontiers in Marine Science, 2022
To better develop and protect the pelagic fishery in the northwest Indian Ocean, China’s fishing enterprises have been producing pelagic fisheries in the said area for a long time.
Haibin Han   +14 more
doaj   +1 more source

Design of an Adaptive Landing Gear with Ground Contact Sensing Capability

open access: yesNanjing Hangkong Hangtian Daxue Xuebao
To improve the landing capability of helicopters on complex terrain, this paper proposes an adaptive landing gear with ground contact sensing capability.
LI Qi, MIAO Hongtao, YANG Yun
doaj   +1 more source

Selection Methodology of an Electric Actuator for Nose Landing Gear of a Light Weight Aircraft

open access: yesApplied Sciences, 2020
Landing gear system of an aircraft enables it to take off and land with safety and comfort. Because of the horizontal and vertical velocity of aircraft, upon landing, the complete aircraft undergoes different forcing functions in the form of the impact ...
Taimur Ali Shams   +5 more
doaj   +1 more source

Impact of ground gear design on catch efficiency in demersal trawl fishery

open access: yesRegional Studies in Marine Science, 2023
The choice of ground gear design in demersal trawls can significantly affect both catch composition and efficiency. The preference for a specific design depends on the fishing ground. In the North-Eastern Mediterranean, two types of ground gears, Single Line and Double Line are commonly used.
Y.E. Fakıoğlu   +4 more
openaire   +4 more sources

A Rational Numerical Method for Simulation of Drop-Impact Dynamics of Oleo-Pneumatic Landing Gear

open access: yesApplied Sciences, 2021
Oleo-pneumatic landing gear is a complex mechanical system conceived to efficiently absorb and dissipate an aircraft’s kinetic energy at touchdown, thus reducing the impact load and acceleration transmitted to the airframe.
Rosario Pecora
doaj   +1 more source

Adaptive Nonlinear Dynamic Inversion with Ground Taxiing Dynamics for Trajectory Tracking and Safe Autonomous Take-Off/Landing of Fixed-Wing UAVs

open access: yesDrones
The design of control systems for aircraft autonomous takeoff and landing, as well as full-flight-envelope operations—including taxiing, takeoff, climb, cruise, descent, and landing—presents significant challenges.
Yingdong Xia   +8 more
doaj   +1 more source

Study of Brake Disc Friction Characteristics Effect on Low Frequency Brake Induced Vibration of Aircraft Landing Gear

open access: yesAerospace, 2022
During aircraft braking, the change of ground adhesion forces can cause forward and backward vibration of the landing gear, and the performance of the brake disc may exacerbate this vibration.
Songyang Zhang   +4 more
doaj   +1 more source

Unleashing the Power of Machine Learning in Nanomedicine Formulation Development

open access: yesAdvanced Functional Materials, EarlyView.
A random forest machine learning model is able to make predictions on nanoparticle attributes of different nanomedicines (i.e. lipid nanoparticles, liposomes, or PLGA nanoparticles) based on microfluidic formulation parameters. Machine learning models are based on a database of nanoparticle formulations, and models are able to generate unique solutions
Thomas L. Moore   +7 more
wiley   +1 more source

Analysis of Coordinated Steering Performance in Multi‑wheel Landing Gears

open access: yesTransactions of Nanjing University of Aeronautics and Astronautics
During aircraft ground steering, the nose landing gear (NLG) tires of large transport aircraft often experience excessive lateral loads, leading to sideslip. This compromises steering safety and accelerates tire wear.
GUI Xiwen   +4 more
doaj   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy