Effect of Static and Dynamic Motions on Aerodynamic Loads and Vortical Structures on a Chined Forebody Delta Wing

The effect of static and dynamic pitch and roll on the aerodynamic loads and the flow field on a tailless chined forebody delta wing model were explored experimentally at 𝑅𝑒𝑐¯ = 2.33×105 . For the wing level case (no roll) the aerodynamic loads suggested vortex breakdown at 𝛼 = 28◦ − 30◦. Introducing a roll angle decreased the overall lift and drag coefficients for 𝛼 > 22◦ while an increase in side force was observed. Roll angles also introduced non-zero roll and yaw moments caused by asymmetry between the vortices. When dynamically pitching or rolling, a hysteresis was observed in the lift and drag forces. Stereo particle image velocimetry experiments showed how the motions influenced the strength and location of the vortices, and thus explained the hysteresis.

Year
2025
Publication Date
Published In
AIAA SciTech
Authors
Remneff, P. and Amitay, M.
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