Results 41 to 50 of about 22,979 (144)
Aircraft Propellers—Is There a Future?
Energies, 2020 The race for speed ruled the early Jet Age on aviation. Aircraft manufacturers chased faster and faster planes in a fight for pride and capability. In the early 1970s, dreams were that the future would be supersonic, but fuel economy and unacceptable ...
Pedro Alves +2 more
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Journal of Aerospace Technology and Management, 2013 http://dx.doi.org/10.5028/jatm.v5i2.229 حفز البحث عن السمية المنخفضة وعدم الإضرار بالبيئة على تطوير خطوط تحقيق محددة في العديد من المجالات. حتماً، لا تزال معايير المناولة الآمنة والحساسية، وقبل كل شيء، الدوافع (الكفاءات) المحددة لتركيبات الوقود الدافع متفوقة فيما يتعلق بالنداءات البيئية.
Gilson da Silva +2 more
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Speedboat Propeller Injuries [PDF]
BMJ, 1974 Six patients are reported who were severely injured by high-speed boat propellers. With reasonable precautions such accidents need never occur, and people should be more aware of these and ensure that safety measures are enforced.
openaire +2 more sources
Engineering Applications of Computational Fluid MechanicsIn this work, the cavitation erosion risks of PC456 propeller blades surface in a ship-propeller-rudder system under different cavitation numbers are explored.
Yu Sun +6 more
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3D CFD Simulation and Experimental Validation of Small APC Slow Flyer Propeller Blade
Aerospace, 2017 The current work presents the numerical prediction method to determine small-scale propeller performance. The study is implemented using the commercially available computational fluid dynamics (CFD) solver, FLUENT. Numerical results are compared with the
Hairuniza Ahmed Kutty +1 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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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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Journal of Applied Science and EngineeringThe posture of water flow velocity generated by the rotation of the ship’s propeller needs to be studied to see the performance of the propeller and the potential for scouring that the seabed can cause.
Abdul Kadir +13 more
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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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