Results 91 to 100 of about 131,875 (310)
Numerical Study of the Scale Effect on Flow Around a Propeller Using the CFD Method
Polish Maritime ResearchThis paper presents an investigation of the scale effect on the flow around a propeller using the CFD method. The differences in the numerical setup and the results obtained for the characteristics of an open water propeller are described and analysed in
Van-Vu Huynh +4 more
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A shock wave approach to the noise of supersonic propellers [PDF]
To model propeller noise expected for a turboprop aircraft, the pressure ratio across the shock at the propeller tip was calculated and compared with noise data from three propellers.
Dittmar, J. H., Rice, E. J.
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Advanced Materials, EarlyView.SPARC (spatio‐chimeric, plasma‐based, anisotropic, and shear‐responsive construct) that integrates myogenic and vascular microenvironments within a single construct. The dual‐modulus matrix directs aligned myotube formation and endothelial network development, enabling a vascularized muscle implant that seamlessly anastomoses with host tissue and ...
Su Hyun Jung +6 more
wiley +1 more source
Topological optimization of a ducted propeller of UAV
Авіаційно-космічна техніка та технологіяThe subject of this study is the minimization of the duct mass for a ducted propeller of UAV. The object of this study is a two-bladed ducted quadcopter propeller. The peripheral diameter of the propeller is 128 mm, and the hood is 2 mm thick.
Anton Balalaiev +4 more
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Numerical simulation on bearing force of propeller for machining errors in non-uniform inflow
Zhongguo Jianchuan Yanjiu, 2017 In order to study the bearing force caused by the machining errors of composite material propeller in non-uniform flow, the propeller was computed by changing the machining error of the propeller in six degrees of freedom, in which the main blade ...
YU Anbin, YE Jinming, ZHANG Kaiqi
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Effect of angular inflow on the vibratory response of a counter-rotating propeller [PDF]
This report presents the results of a propeller vibratory stress survey on the Fairey Gannet aircraft aimed at giving an assessment of the difference in vibratory response between single and counter-rotating propeller operation in angular inflow.
Brown, P. C., Turnberg, J. E.
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Plasmonic Nanomachines: Creating Local Potential Gradients and Motions
Advanced Materials, EarlyView.Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim +3 more
wiley +1 more source
Application of Vortex Flow Model in Propeller-Stator System Design and Analysis
Polish Maritime Research, 2018 The paper covers basics of the vortex model used for propeller-stator systems. The outline of the design algorithm is given and the results of its application are shown.
Król Przemysław, Bugalski Tomasz
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Modelling a Propeller Using Force and Mass Rate Density Fields
Journal of Marine Science and Engineering, 2018 A method to replace a propeller by force and mass rate density fields has been developed. The force of the propeller on the flow is calculated using a boundary element method (BEM) program and used to generate the force and mass rate fields in a Reynolds-
David Hally
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High speed turboprops for executive aircraft, potential and recent test results [PDF]
Four high speed propeller models were designed and tested in an 8x6 foot wind tunnel in order to evaluate the potential of advanced propeller technology.
Mikkelson, D. C., Mitchell, G. A.
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