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Advances in Aircraft and Spacecraft Science
  Volume 10, Number 2, March 2023 , pages 141-158

Numerical analysis of the effect of V-angle on flying wing aerodynamics
Zahir Amine and Omer Elsayed

    In current research work, the aerodynamics performance of a newly designed large flying V aircraft is numerically investigated. Three Flying V configurations, with V-angles of 50o, 70o and 90o that represent the minimum, moderate, and maximum configurations respectively, were designed and modeled to assess their aerodynamic performance at cruise flight conditions. The unstructured mesh was developed using ICEM CFD and Ansys-Fluent was used as an aerodynamic solver. The developed models were numerically simulated at cruise flight conditions with a Mach number equal to 0.15. K-w SST turbulence model was chosen to account for flow turbulence. The authors performed steady flow simulations. The results obtained from the experimentation reveal that the maximum main angle configuration of 90o had the highest CLmax value of 0.46 compared to other configurations. While the drag coefficient remained the same for all three configurations, the 50o V-angle configuration achieved the maximum stall angle of 35o. With limited stall delay benefits, the flying V possesses no sufficient stability, due to the flow separation detected at whole elevon and winglet suction side areas at AoA equal and higher than 30o.
Key Words
    blended wing body; flying V; flying wing; fuselage-wing design; numerical analysis; V-angle
Zahir Amine: Aerospace Engineer, Brussels, Belgium
Omer Elsayed: International University of Rabat, School of Aerospace Engineering, LERMA Lab., Campus UIR Parc Technopolis, Rocade, Rabat-Sale, 11100-Sala Al Jadida, Maroc

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