Results 161 to 170 of about 232,137 (308)

Model rotor icing tests in the NASA Lewis icing research tunnel [PDF]

Tests of a lightly instrumented two-bladed teetering rotor and a heavily instrumented sub-scale articulated main rotor were conducted in the NASA Lewis Research Center Icing Research Tunnel (IRT) in August 1988 and September and November 1989.
Bond, Thomas H., Britton, Randall K., Flemming, Robert J.   +2 more
core   +1 more source

Design and Experimental Study of Pressure Maintenance and Temperature Control System for Hydrate Pressure Core Processing Device

Energy Science &Engineering, EarlyView.
This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan, Jiawang Chen, Qiaoling Gao, Yingjie Liu   +3 more
wiley   +1 more source

A dual-mode dual-stator hybrid rotor synchronous and vernier machine for variable speed applications. [PDF]

Sci Rep
Ali S, Ali Q, Munir HM, Zidan HA.
europepmc   +1 more source

Technoeconomic Assessment of Wind Power Potential in the Vicinity of GolGohar Sirjan Mining and Industrial Company

Energy Science &Engineering, EarlyView.
Graphical abstract of wind energy study in the Vicinity of GolGohar Sirjan Mining and Industrial Company. ABSTRACT Wind energy is a central pillar of sustainable energy transition; however, its feasibility strongly depends on site‐specific wind regimes and economic conditions.
Hossein Amiri
wiley   +1 more source

A novel rotor harmonic winding-based high efficient self-excited brushless wound rotor synchronous machine with improved torque features. [PDF]

Sci Rep
Ul Haq MA, Farooq H, Liaqat R, Khan ZA, Altamimi A.   +4 more
europepmc   +1 more source

Advancing-side directivity and retreating-side interactions of model rotor blade-vortex interaction noise [PDF]

Acoustic data are presented from a 40 percent scale model of the four-bladed BO-105 helicopter main rotor, tested in a large aerodynamic wind tunnel.
Elliott, J. W., Martin, R. M., Schultz, K.-J., Splettstoesser, W. R.   +3 more
core   +1 more source

Blade Count and Rotational Speed Sensitivity of Vertical‐Axis Turbines Under Guided Vehicle‐Generated Transient Wakes

Energy Science &Engineering, EarlyView.
Passing vehicles generate short‐duration wakes that can be redirected toward a vertical‐axis turbine. The interaction between wake structure, blade count, and rotational speed governs transient torque production. Low‐solidity configurations combined with tuned rotational speed enhance energy extraction under vehicle‐induced gusts.
Aydin Ulus, Stefan Ilie Moldovan
wiley   +1 more source

Performance-driven switched reluctance motor drive using multiport cascaded converter and advanced direct torque control scheme. [PDF]

Sci Rep
Deepak M, Santhakumar K, Sathiyasekar K, Chokkalingam B, Padmanaban S.   +4 more
europepmc   +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., Greitzer, E. M., Schlinker, R. H., Simonich, J. C.   +3 more
core   +1 more source

Unsteady Flow Behavior and Radial Force Analysis of a Side Channel Pump Under Different Blade Tip Cutting Angles Using Computational Fluid Dynamics

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, Desmond Appiah, Fan Zhang, Chen Ke   +3 more
wiley   +1 more source