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صفحه اصلی
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دومین سمپوزیوم منطقه ای نوآوری در علم و فناوری
Investigating Effects of sinusoidal leading edge on a lambda-wing UAV at pre-stall angles
نویسندگان :
Amir Hosseinikargar
1
Mohammad Hassan Djavareshkian
2
Amir Hossein Gholami
3
1- Ferdowsi University of Mashhad
2- Ferdowsi University of Mashhad
3- Ferdowsi University of Mashhad
کلمات کلیدی :
Sinusoidal leading edge،Flying wing،Numerical simulation،Lift-to-drag ratio
چکیده :
This study examines the aerodynamic benefits of implementing a sinusoidal leading edge on a lambda-shaped, subsonic flying wing with a 56-degree sweep angle and -3-degree twist. Numerical simulations, validated by experimental data over angles of attack from -5° to 20°, focused on optimizing lift, drag, and vortex formation. Results show that the sinusoidal leading edge improves the lift-to-drag ratio by approximately 20% within the 5° to 15° range, enhancing range and reducing fuel consumption. Unlike conventional dual-vortex structures, vortices form at each crest along the sinusoidal edge, potentially delaying flow separation at higher angles of attack by adding turbulent energy and promoting lateral reattachment.
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