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<p>This study presents the design and evaluation of eleven Blended Wing Unmanned Aerial Vehicle (BWUAV) configurations developed to enhance aerodynamic performance and structural stability. All models were created in SOLIDWORKS using the MH-91 airfoil and analyzed in ANSYS 2022 with a pressure-based solver and the k-epsilon enhanced wall treatment model at an inlet velocity of 75&#xa0;m/s. Aerodynamic forces, pressure behavior, velocity distribution, and lift-to-drag characteristics were examined for each configuration. Among all designs, Hybrid Model 2 produced the highest aerodynamic efficiency, generating a lift of 108.99&#xa0;N and a drag of 51.85&#xa0;N, resulting in the highest L/D ratio among the eleven models. Other high-performing geometries included Blunt Nose Model 4, Pointed Nose Model 1, and Hybrid Model 1, but Hybrid Model 2 consistently demonstrated superior flow stability and favorable pressure gradients. Structural analysis was carried out using conventional composite materials, where CFRP GY-70 exhibited the lowest total deformation and elastic strain, while S-GFRP produced the lowest equivalent stress. To combine the advantages of both materials, a hybrid composite was developed using ANSYS Material Designer. When applied to the selected models, the hybrid composite further reduced deformation and improved stress distribution, establishing Hybrid Model 2 as the most structurally efficient configuration. The combined aerodynamic and structural results confirm that the proposed BWUAV framework provides a stable, lightweight, and reliable platform suitable for diverse unmanned applications and future development.</p>

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Hybrid BWB UAV configurations with pointed and blunt nose shapes: aerodynamic and structural insights

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Laxana Sourirajan,
  • Hansini Mohanraj,
  • Shakthi Sudarshan Vallchetty Chandrasekar,
  • Beena Stanislaus Arputharaj,
  • Parvathy Rajendran,
  • Senthil Kumar Madasamy,
  • Subhav Singh,
  • Deekshant Varshney,
  • Vijayanandh Raja

摘要

This study presents the design and evaluation of eleven Blended Wing Unmanned Aerial Vehicle (BWUAV) configurations developed to enhance aerodynamic performance and structural stability. All models were created in SOLIDWORKS using the MH-91 airfoil and analyzed in ANSYS 2022 with a pressure-based solver and the k-epsilon enhanced wall treatment model at an inlet velocity of 75 m/s. Aerodynamic forces, pressure behavior, velocity distribution, and lift-to-drag characteristics were examined for each configuration. Among all designs, Hybrid Model 2 produced the highest aerodynamic efficiency, generating a lift of 108.99 N and a drag of 51.85 N, resulting in the highest L/D ratio among the eleven models. Other high-performing geometries included Blunt Nose Model 4, Pointed Nose Model 1, and Hybrid Model 1, but Hybrid Model 2 consistently demonstrated superior flow stability and favorable pressure gradients. Structural analysis was carried out using conventional composite materials, where CFRP GY-70 exhibited the lowest total deformation and elastic strain, while S-GFRP produced the lowest equivalent stress. To combine the advantages of both materials, a hybrid composite was developed using ANSYS Material Designer. When applied to the selected models, the hybrid composite further reduced deformation and improved stress distribution, establishing Hybrid Model 2 as the most structurally efficient configuration. The combined aerodynamic and structural results confirm that the proposed BWUAV framework provides a stable, lightweight, and reliable platform suitable for diverse unmanned applications and future development.