Results 71 to 80 of about 94,319 (292)
Energy Science &Engineering, EarlyView.The Radial Force (RF) distribution under different cutting angles is presented in Figure 1. Generally, the distribution of RF displays divergence across different flow conditions. The pattern of force distribution reveals a total of 24 peaks, which corresponds to the number of blades of the impeller of the SCP.
Kofi Asamoah Adu‐Poku +3 more
wiley +1 more source
On the Effect of Tip Flow on the Noise of a Ducted Rotor
International Journal of Turbomachinery, Propulsion and PowerThis study focuses on the aeroacoustic aspects of ducted rotors that could possibly be used in future electrically driven helicopter tail rotor systems. It provides a comprehensive understanding of the tip flow evolution, and of the interaction with the ...
Jose Rendón-Arredondo, Stéphane Moreau
doaj +1 more source
Investigation of Anti-Phase Asymmetric Quiet Rotor Technology [PDF]
The future of urban air mobility has a well-known tall pole challenge in the form of community acceptance which largely comes from the noise. This paper presents a proposed anti-phase rotor technology that could reduce noise sources such as blade vortex ...
Cramer, Nicholas B. +3 more
core +1 more source
Energy Science &Engineering, EarlyView.This study develops and evaluates a solar PV‐fed electric bicycle system optimized for university campuses in Pakistan. The techno‐economic analysis demonstrates significant fuel savings, emission reductions, and sustainability benefits, promoting a cost‐effective, eco‐friendly, and renewable transportation alternative amid rising global fuel and ...
Muhammad Abdullah Khan +4 more
wiley +1 more source
Helicopter rotor noise due to ingestion of atmospheric turbulence [PDF]
A theoretical study was conducted to develop an analytical prediction method for helicopter main rotor noise due to the ingestion of atmospheric turbulence.
Amiet, R. K. +3 more
core +1 more source
Advanced Functional Materials for Marine Energy Utilization
Interdisciplinary Materials, EarlyView.Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu +7 more
wiley +1 more source
Zhongguo Jianchuan YanjiuObjectiveComposite materials offer advantages such as low weight, corrosion resistance and a high damping ratio. To enhance the overall performance of underwater vehicles, this study investigates the characteristics of a composite rotor pump-jet ...
Bo LU +5 more
doaj +1 more source
Effect of rotor-to-stator spacing on acoustic performance of a full-scale fan (QF-5) for turbofan engines [PDF]
A study was made of the effect of increasing the fan rotor-to-stator spacing on the noise level of a full-scale, single-stage, 1.6-pressure-ratio fan. Noise data were obtained with axial spacing of 1.14, 1.65, and 2.27 rotor chord lengths.
Balombin, J. R., Stakolich, E. G.
core +1 more source
Laser &Photonics Reviews, EarlyView.Optically confined gold nanorods exhibit cooperative light‐driven dynamics, forming mobile end‐to‐end dimers with orientation‐dependent propulsion. Using structured laser traps and an opto‐thermo‐hydrodynamic model, we uncover how optical binding, polarization‐induced torque, and near‐surface hydrodynamics govern their motion.
José A. Rodrigo, Tatiana Alieva
wiley +1 more source
Turbulence distortion matters in predicting inflow turbulence noise of future wind turbines [PDF]
Wind Energy ScienceThis study examines the role of turbulence distortion in predicting inflow turbulence (IT) noise generation from large wind turbines via Amiet's theory.
Ö. Yalçın +5 more
doaj +1 more source