Results 11 to 20 of about 3,385,985 (242)

Modelling of tilt rotor mission performance to assess environmental impact [PDF]

open access: yes, 2012
New technologies and new rotorcraft operations are being developed in order to meet new environmental requirements such as noise reduction and less pollutant emissions. In this project a parametric study was developed over a tilt rotor model in order to
Ruge Montilla, Jhonn Hamberth
core   +7 more sources

Effects of weak anchoring on C1 and C2 chevron structures [PDF]

open access: yes, 2005
We present a theoretical study of the effect of weak anchoring on the transition between C1 and C2 chevron structures in smectic C liquid crystals. We employ a continuum theory which allows for variable cone, azimuthal and layer tilt angles.
Mottram, Nigel   +2 more
core   +5 more sources

Optimal solar panel tilt angle calculation and simulation in Indonesia: A Liu and Jordan sky isotropic model-based approach

open access: yes, 2023
The efficient utilization of solar energy is crucial for meeting the growing energy demands while reducing greenhouse gas emissions and dependence on fossil fuels.
Irawati, Fenny   +5 more
core   +2 more sources

Facilitating learning adaptive V-tail of a supersonic missile for radar cross-section reduction during interval flight

open access: yesHeliyon, 2023
To study the V-tail inclination of a supersonic missile that meet the requirements of low electromagnetic scattering characteristics in interval flight, an automatic tilt scheme is presented.
Zeyang Zhou, Jun Huang
doaj   +1 more source

Forward polishing process planning of aero-engine blisk blade

open access: yesXibei Gongye Daxue Xuebao, 2023
The surface roughness can be reduced by increasing the forward-tilt angle of polishing process. It is of great significance to explore the influence law of the forward-tilt angle on the quality of the polished surface to improve the polishing efficiency ...
CHEN Zhen   +5 more
doaj   +1 more source

Analysis and Optimization of Wireless Power Transfer Efficiency Considering the Tilt Angle of a Coil [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2018
Wireless power transfer (WPT) based on magnetic resonant coupling is a promising technology in many industrial applications. Efficiency of the WPT system usually depends on the tilt angle of the transmitter or the receiver coil.
Wei Huang, Hyunchul Ku
doaj   +1 more source

Study of Modeling and Optimal Take-Off Scheme for a Novel Tilt-Rotor UAV

open access: yesSensors, 2022
The optimal trajectory planning for a novel tilt-rotor unmanned aerial vehicle (UAV) in different take-off schemes was studied. A novel tilt-rotor UAV that possesses characteristics of both tilt-rotors and a blended wing body is introduced.
Zelong Yu, Jingjuan Zhang, Xueyun Wang
doaj   +1 more source

Impact of solar radiation variation on the optimal tilted angle for fixed grid-connected PV array—case study in Beijing

open access: yesGlobal Energy Interconnection, 2018
A key design parameter for fixed grid-connected photovoltaic (PV) arrays, the optimal tilt angle, does not only depend on the geographic location but is also directly affected by atmospheric conditions.
Yanbo Shen   +3 more
doaj   +1 more source

Re-examining sunspot tilt angle to include anti-Hale statistics [PDF]

open access: yes, 2014
Sunspot groups and bipolar magnetic regions (BMRs) serve as an observational diagnostic of the solar cycle. We use Debrecen Photohelographic Data (DPD) from 1974-2014 that determined sunspot tilt angles from daily white light observations, and data ...
Li, J., McClintock, B. H., Norton, A. A.
core   +1 more source

Solar Panel Tilt Angle Optimization Using Machine Learning Model: A Case Study of Daegu City, South Korea

open access: yesEnergies, 2020
Finding optimal panel tilt angle of photovoltaic system is an important matter as it would convert the amount of sunlight received into energy efficiently.
Gi Yong Kim, Doo Sol Han, Zoonky Lee
doaj   +1 more source

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