WIND TUNNEL EXPERIMENTS WITH LOCAL ACTIVE FLOW CONTROL FOR AIRCRAFT TOWARDS FUTURE FLIGHT TESTING

A high Reynolds number wind tunnel test with a single aisle transport aircraft model at low speed cryogenic conditions is addressing the challenges to apply local active flow control technologies to delay the wing stall at high-lift conditions and enable the close-coupling of UHBR engines. The study considers flow control technologies to be matured towards a future flight test with DLR’s ATRA test aircraft. The research focuses on studying the impact of a so-called slat cutout inboard of the under-wing mounted engine and verifies the aerodynamic benefits of flow control systems towards the fli... Mehr ...