[HTML][HTML] Development and validation of a hybrid aerodynamic design method for curved diffusers using genetic algorithm and ball-spine inverse design method

M Nili-Ahmadabadi, F Aghabozorgi, DS Cho… - Alexandria Engineering …, 2021 - Elsevier
The inverse design is one of the aerodynamic design methods, in which the pressure
distribution along the wall is known, and the duct geometry is unknown. To obtain the best …

Numerical and experimental investigations on non-axisymmetric D-type inlet nozzle for a squirrel-cage fan

H Liu, B Jiang, J Wang, X Yang… - Engineering Applications of …, 2021 - Taylor & Francis
In this study, the unique reverse-flow around the inlet nozzle of a squirrel-cage fan was
numerically studied by computational fluid dynamics (CFD), and a non-axisymmetric D-type …

A new blade tip geometry to improve aerodynamic performance and acoustic noise of helicopter blade in hovering flight

R Afshari, SMH Karimian - Aerospace Science and Technology, 2023 - Elsevier
The goal of the present study is to improve aerodynamic performance of the helicopter main
rotor by geometric redesign of its blades' tips. In this process, the generated noise is …

Numerical study on the stability enhancement mechanism of self-recirculating casing treatment in a counter-rotating axial-flow compressor

Y Guo, X Mao, L Gao, Y Yu - Engineering Applications of …, 2022 - Taylor & Francis
Counter-rotating axial-flow compressor (CRAC) is a promising technology to increase the
thrust-to-weight ratio of aero-engines. Self-recirculating casing treatment (SRCT) is selected …

Optimization of a transonic axial-flow compressor under inlet total pressure distortion to enhance aerodynamic performance

L Da, L Hanan, Y Zhe, P Tianyu, D Hai… - … of Computational Fluid …, 2020 - Taylor & Francis
In a boundary layer ingestion (BLI) propulsion system, the compressor rotor operates under
the condition of a severe inflow distortion because the boundary layers on the surface of …

Squirrel-cage fan system optimization and flow field prediction using parallel filling criterion and surrogate model

Q Xiao, X Shi, L Wu, J Wang, Y Ding, B Jiang - Processes, 2021 - mdpi.com
In this study, the blade shape of the squirrel-cage fan system inside the range hood was
optimized using the surrogate model to improve the maximum volume flow rate. The …

[PDF][PDF] Cooperative trajectory and launch power optimization of UAV deployed in cross-platform battlefields

NZ Azeemi - International Association of Engineers, Engineering …, 2021 - researchgate.net
Trajectory planning is a complex problem, which involves meeting the physical constraints of
the Unmanned Aerial Vehicles (UAVs), constraints from the operating environment and …

Learning radar cross section of an intermeshing-rotor helicopter with blade pitch

Z Zhou, J Huang - Aircraft Engineering and Aerospace Technology, 2023 - emerald.com
Purpose This study aims to study the radar cross-section (RCS) of an intermeshing rotor with
blade pitch. Design/methodology/approach The variation of rotor blade pitch is designed …

Manufacturing Process of Helicopter Tail Rotor Blades from Composite Materials Using 3D-Printed Moulds

R Torpan, SM Zaharia - Applied Sciences, 2024 - mdpi.com
Conventional processes require a mould for the manufacture of each test product, which
often results in high costs but is ideal for large series of products. In contrast, for prototypes …

Application of Leading-Edge Tubercles on Rotor Blades

R Colpitts, RE Perez - AIAA Journal, 2023 - arc.aiaa.org
This study explores the effects of leading-edge tubercles applied to a canonical rotor blade
in an effort to improve aerodynamic performance of a rotor in hover, without sacrificing …