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Basic Helicopter Aerodynamics

Machine Learning in Aerodynamic Shape Optimization

Multiscale and Multiresolution Approaches in TurbulenceP. Sagaut, S. Deck, and M. Terracol, 2nd ed., Imperial College Press, London, 2013, 448 pp., 128 hardcover and 96 ebook.

Aerodynamic optimization of helicopter rear fuselage

Automatic modeling of aircraft external geometries for preliminary design workflows

CFD simulation of helicopter rotor flow based on unsteady actuator disk model

Hover computations were undertaken for a helicopter model rotor using Computational Fluid Dynamics (CFD). The influence of CFD mesh construction peculiarities and mesh parameters on the results was considered. Aerodynamics performance of the rotor were obtained including the rotor polar, loads per unit length, and vortical flow below the rotor disk was also visualized.

Estimates of hover aerodynamics performance of rotor model

This paper investigates the aerodynamic lift and drag of the ANSAT helicopter fuselage prototypes using Computational Fluid Dynamics. The CAD model of the fuselage was meshed using an unstructured grid and computed using a viscous flow model under the assumption of steady flow conditions. To account for the influence of the helicopter rotor an actuator disk model was used and the results were compared with computations for the isolated fuselage. The contributions to the total drag of the individual helicopter fuselage components were also studied using different turbulence models. The key components of the fuselage drag were identified.

CFD Simulation of Fuselage Aerodynamics of the "ANSAT" Helicopter Protype

The aim of this paper is to present aerodynamic analyses of realistic fuselage configurations using computational fluid dynamics. A development model of the Ansat helicopter is employed. The model is tested at the subsonic wind tunnel of the Kazan National Research Technical University/Kazan Aviation Institute for a range of Reynolds numbers, pitch, and yaw angles. The computational fluid dynamics results were found to be in fair agreement with the test data and revealed flow separation at the rear of the fuselage. Once confidence in the computational fluid dynamics method was established, further modifications were introduced to the fuselage model to demonstrate drag reduction via small shape changes. The contribution to the overall drag from each fuselage part and the interference drag between the main fuselage components were also investigated.

S.A. Mikhailov

Papers

Aerodynamic optimization of helicopter rear fuselage

CFD simulation of helicopter rotor flow based on unsteady actuator disk model

Estimates of hover aerodynamics performance of rotor model

CFD Simulation of Fuselage Aerodynamics of the "ANSAT" Helicopter Protype

Computational Fluid Dynamics Modeling of Helicopter Fuselage Drag