scholarly journals Aeroacoustic and aerodynamic optimization of propeller blades

2020 ◽  
Vol 33 (3) ◽  
pp. 826-839 ◽  
Author(s):  
Peixun YU ◽  
Jiahui PENG ◽  
Junqiang BAI ◽  
Xiao HAN ◽  
Xiang SONG
Keyword(s):  
Aerodynamic Optimization ◽  
Propeller Blades

Wake Analysis of an Aerodynamically Optimized Boxprop High-Speed Propeller

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
Alexandre Capitao Patrao ◽  
Tomas Grönstedt ◽  
Anders Lundbladh ◽  
Gonzalo Montero Villar
Keyword(s):  
High Speed ◽  
Tip Vortex ◽  
Lower Amount ◽  
Optimized Design ◽  
Aerodynamic Optimization ◽  
Vortex Strength ◽  
Percentage Point Increase ◽  
Aerodynamic Loading ◽  
Point Increase ◽  
Propeller Blades

The Boxprop is a novel, double-bladed, tip-joined propeller for high-speed flight. The concept draws inspiration from the box wing concept and could potentially decrease tip vortex strength compared with conventional propeller blades. Early Boxprop designs experienced significant amounts of blade interference. By performing a wake analysis and quantifying the various losses of the flow, it could be seen that these Boxprop designs produced 45% more swirl than a conventional reference blade. The reason for this was the proximity of the Boxprop blade halves to each other, which prevented the Boxprop from achieving the required aerodynamic loading on the outer parts of the blade. This paper presents an aerodynamic optimization of a 6-bladed Boxprop aiming at maximizing efficiency and thrust at cruise. A geometric parametrization has been adopted which decreases interference by allowing the blade halves to be swept in opposite directions. Compared with an earlier equal-thrust Boxprop design, the optimized design features a 7% percentage point increase in propeller efficiency and a lower amount of swirl and entropy generation. A vortex-like structure has also appeared downstream of the optimized Boxprop, but with two key differences relative to conventional propellers. (1) Its formation differs from a traditional tip vortex and (2) it is 46% weaker than the tip vortex of an optimized 12-bladed conventional propeller.

INVESTIGATION OF FLOW SEPARATION PROPAGATION ON PROPELLER BLADES BY THE TUFTS AND LIGHT SHEET TECHNIQUES

2009 ◽  
Vol 40 (1) ◽  
pp. 103-115
Author(s):  
V. E. Mosharov ◽  
A. A. Orlov ◽  
S. P. Ostroukhov ◽  
V. N. Radchenko
Keyword(s):  
Flow Separation ◽  
Light Sheet ◽  
Propeller Blades

A STUDY OF DISCRETE ADJOINT-BASED GRADIENT METHOD IMPLEMENTATION FOR AERODYNAMIC OPTIMIZATION

2020 ◽  
Author(s):  
Gilberto Bueno Luque Filho ◽  
Marco Aurélio Leonel Matunaga ◽  
João Luiz F. Azevedo
Keyword(s):  
Gradient Method ◽  
Aerodynamic Optimization ◽  
Discrete Adjoint

scholarly journals Drifting potential humps in ionization zones: The “propeller blades” of high power impulse magnetron sputtering

2013 ◽  
Vol 103 (14) ◽  
pp. 144103 ◽  
Author(s):  
André Anders ◽  
Matjaž Panjan ◽  
Robert Franz ◽  
Joakim Andersson ◽  
Pavel Ni
Keyword(s):  
Magnetron Sputtering ◽  
High Power ◽  
Propeller Blades
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