Note: Subproject C2 was discontinued after the first funding period. All ongoing activities are for an affiliated project funded by DLR.
Extremely high lift along with low dynamic pressure puts high demands on the trim and controllability of an aircraft. In addition there is a strong cross-coupling between lift and thrust resulting in the need for active control to achieve acceptable handling qualities. To provide the necessary manoeuvre capability for take-off and landing and to cope with external disturbances conventional control surfaces seem to be not very well suited. It is assumed that concepts based on direct circulation control are more efficient. The basic principles and the capabilities of the developed control concepts will be analysed in general.