| Citation: | Tian Zhuoyue, Huang Longtai, Ruan Yuan, et al. Study on lift enhancement effectiveness of co-flow jet technology in hybrid wing-body amphibious aircraft[J]. Journal of Aerospace Power, 2026, 41（X）：20250262 doi: 10.13224/j.cnki.jasp.20250262
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A single-slotted Fowler flap high-lift device for a hybrid wing-body (HWB) configured amphibious aircraft was designed, incorporating blowing/suction zones on the upper surface of the main wing. It systematically validated the lift-enhancement effectiveness of the co-flow jet (CFJ) technology on this novel aerodynamic configuration and elucidated the mechanisms behind its aerodynamic performance improvements. Numerical simulation results demonstrated that: when the flap deflection angle reached 40°, the maximum lift coefficient of the high-lift configuration attained 2.7; after implementing CFJ, the flow velocity over the upper wing surface increased, accompanied by a significant rise in negative pressure. The initial flow separation on the wing surface was effectively controlled, with the maximum lift coefficient increasing to 3.2, stall angle of attack extended by 4°, drag coefficient reduced by over 20%, and available range of pitching moment expanded. Additionally, CFJ enhanced the surface flow velocity on the flaps and suppressed the potential local separation under high angle-of-attack conditions, increasing the leading-edge negative pressure peak by up to 30% and significantly improving the flap lift-enhancement efficiency.
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