Results 221 to 230 of about 542,523 (285)
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Rotor-Blade Interaction During Blade Resonance Drive-Through
Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, 2021Abstract In the future energy landscape, combined cycle power plants will increasingly take the role of providing balancing power for fluctuating renewable energy sources due to their high availability and fast start-up times. This implies more frequent cycling, a larger number of speed cycles and thus new challenges for plant design and
Roland Grein +3 more
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Prediction of transient vibration response of dual-rotor-blade-casing system with blade off
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2019Fan blade off occurring in a running rotor of the turbofan engine dual-rotor system will cause a sudden unbalance and inertia asymmetry, which results in large impact load and consequently induces the rubbing between blade and casing.
Nanfei Wang, Chao Liu, D. Jiang
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Evolution and Progress in the Development of Savonius Wind Turbine Rotor Blade Profiles and Shapes
Journal of solar energy engineering, 2018The blade profiles and blade shapes of vertical-axis Savonius wind turbine rotors have undergone a series of changes over the past three decades. Wind turbine aerodynamicists have carried out numerous computational and experimental research to arrive at ...
N. Alom, U. Saha
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Energy, 2019
The effects of flow variations to the aerodynamic performance of turbomachinery blades are considerable in the real world. Uncertainty quantification of aerodynamic performance is useful for evaluating the mean performance change, robust design, etc. The
Zhiheng Xia, Jiaqi Luo, Feng Liu
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The effects of flow variations to the aerodynamic performance of turbomachinery blades are considerable in the real world. Uncertainty quantification of aerodynamic performance is useful for evaluating the mean performance change, robust design, etc. The
Zhiheng Xia, Jiaqi Luo, Feng Liu
semanticscholar +1 more source
2015
The work done in the previous chapter is further extended to the design of a two-cell airfoil cross-section which is a more realistic model of the helicopter rotor blade. Optimum actuator placement, the effect of the current active twist concept on key characteristics such as blade loads, aeromechanical stability and trim controls is investigated ...
Ranjan Ganguli +2 more
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The work done in the previous chapter is further extended to the design of a two-cell airfoil cross-section which is a more realistic model of the helicopter rotor blade. Optimum actuator placement, the effect of the current active twist concept on key characteristics such as blade loads, aeromechanical stability and trim controls is investigated ...
Ranjan Ganguli +2 more
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The effect of inner blade position on the performance of the Savonius rotor
, 2019In this study, the effect of the inner blade position on the performance of the Savonius rotor has been investigated numerically to determine the best position of the inner blade. Five values of inner blade angles are adopted (180°, 160°, 140°, 120°, and
Mohanad Al-Ghriybah +4 more
semanticscholar +1 more source
1973
The development of fiber reinforced resin-bonded structural composite materials has created a new degree of design flexibility for the helicopter engineer. The development and commercial availability of glass fibers, carbon or graphite fibers, and boron fibers, with their attendant widely varying stiffness properties and material densities, enable the ...
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The development of fiber reinforced resin-bonded structural composite materials has created a new degree of design flexibility for the helicopter engineer. The development and commercial availability of glass fibers, carbon or graphite fibers, and boron fibers, with their attendant widely varying stiffness properties and material densities, enable the ...
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Aircraft Engineering and Aerospace Technology, 1938
NUMEROUS difficulties are encountered in any attempt to ascertain the loads which come into action on a gyroplane rotor blade, and the stresses which these loads impose on the blade. The loads are not steady but variable, complicated and subject to intractable fluctuations. In consequence the blades are in a continual state of agitation.
J. Morris, W. Tye
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NUMEROUS difficulties are encountered in any attempt to ascertain the loads which come into action on a gyroplane rotor blade, and the stresses which these loads impose on the blade. The loads are not steady but variable, complicated and subject to intractable fluctuations. In consequence the blades are in a continual state of agitation.
J. Morris, W. Tye
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The Journal of the Acoustical Society of America, 2011
A fan rotor arrangement comprises a fan rotor ( 24 ) and a plurality of fan blades ( 26 ). Each fan blade ( 26 ) comprises a root portion ( 36 ) and an aerofoil portion ( 38 ). Each aerofoil portion ( 38 ) has a leading edge ( 44 ), a trailing edge ( 46 ) and a tip ( 48 ).
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A fan rotor arrangement comprises a fan rotor ( 24 ) and a plurality of fan blades ( 26 ). Each fan blade ( 26 ) comprises a root portion ( 36 ) and an aerofoil portion ( 38 ). Each aerofoil portion ( 38 ) has a leading edge ( 44 ), a trailing edge ( 46 ) and a tip ( 48 ).
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Titanium UTTAS Main Rotor Blade
Journal of the American Helicopter Society, 1976A description of the design philosophy leading to the development of a high performance rotor blade for the Army UTTAS helicopter is presented. The Army mission requirements of 550 fpm rate‐of‐climb at 4000 ft, 95° conditions and a 1.75 g maneuver at 150 knots translate into Figure of Merit and aeroelastic achievements beyond those of existing rotors.
Peter Arcidiacono, Robert Zincone
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