Two-dimensional cold-air cascade study of a film-cooled turbine stator blade. 4: Comparison of experimental and analytical aerodynamic results for blade with 12 rows of 0.076-centimeter-(0.030-inch-) diameter holes having streamwise ejection angles [PDF]
Previously published experimental aerodynamic efficiency results for a film cooled turbine stator blade are compared with analytical results computed from two published analytical methods.
Prust, H. W., Jr.
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The effect of blade aerodynamic modelling on the prediction of high-frequency rotor airloads [PDF]
, 2009 Interactions between the blades and vortical structures within the wake of a helicopter rotor are a significant source of impulsive loading and noise, particularly in descending flight.
Brown, Richard, Kelly, Mary E.
core
Root damage analysis of aircraft engine blade subject to ice impact [PDF]
The blade root response due to ice impact on an engine blade is simulated using the NASA in-house code BLASIM. The ice piece is modeled as an equivalent spherical object impacting on the leading edge of the blade and has the velocity opposite to that of ...
Abumeri, G. H. +3 more
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The velocity field of a system of unsteady cycloidal vorticies [PDF]
, 1981 An essential difference between two-dimensional and three-dimensional models of cycloidal rotors, the presence of unsteady trailing cycloidal vorticies in the wake, was studied.
Young, B. J.
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Improvements to tilt rotor performance through passive blade twist control [PDF]
A passive blade twist control is presented in which the twist distribution of a tilt rotor blade is elastically changed as a function of rotor speed. The elastic twist deformation is used to achieve two different blade twist distributions corresponding ...
Nixon, Mark W.
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Optimal rotor blade swirl law for the last stage of a stationary turbine with an axial diffuser
, 2023 L. O. Vokin +6 more
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An integral equation solution for multistage turbomachinery design calculations [PDF]
A method was developed to calculate flows in multistage turbomachinery. The method is an extension of quasi-three-dimensional blade-to-blade solution methods.
Mcfarland, Eric R.
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North Wind 4kW passive control system design [PDF]
, 1981 An overview of a mechanical rotor control design is presented. Operation at constant RPM and rapid response are obtained by using blade pitch moments for both sensing control need and blade pitch actuation. The basic concept, static or equilibrium design,
Currin, H.
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Investigation of the Mechanical Behavior of a New Generation Wind Turbine Blade Technology [PDF]
, 2023 Cihan Çiftçi +2 more
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Design and Testing of an Offset Straw-Returning Machine for Green Manures in Orchards
AgricultureIn order to solve the problems of traditional orchard-specific green manure crushing and returning machines, such as the single operation effect, root system damage, unsustainable green manure growth, and low utilization rate, an offset crushing ...
Quanzhong Zhang +9 more
doaj +1 more source