Figure Description: Separation lines on the flap with and without AFC(Active Flow Control). The AFC set up provides lift enhancement of 21 drag-counts in the linear lift regime, in comparison to the numerical results without AFC. The large flow separation is significantly reduced by AFC.
Reference: Vlad Ciobaca, Timo Kühn and Ralf Rudnik, “Active Flow Separation Control on a High-Lift Wing-Body Configuration”, Part 2: The Pulsed Blowing Application, AIAA 2011-3169
Within the European funded research project JTI – SFWA(Joint Technology Initiative – Smart Wing Fixed Aircraft), system technologies and system architectures for the realization of active flow control(AFC) for high lift systems shall be developed and assessed.
Objective of the integration of active flow control technologies is the increase of the efficiency of modern high lift systems for commercial aircraft. One major issue to be investigated is the realization of suitable system concepts to fulfill functional requirements with minimum impact on weight and power consumption. In this work, assessment tools, methods and concepts for systems performing the active flow control are developed and evaluated.
In a first step, a multidisciplinary process and suitable tools for the system design are implemented to achieve the involvement of various disciplines in an optimized workflow. With regard to the assessment objectives appropriate evaluation methods and tools are defined and implemented. Appropriate components are defined for the system design and suitable system architectures for active flow control are developed and evaluated. The assessment criteria include the necessary degree of redundancy to fulfill the safety and reliability requirements, system behavior with consideration of failure cases, system weight and energy consumption. Main contents of this study are: