This paper reviews and highlights recent developments of certain aspects of flow control concerned with reducing the drag of, and delaying flow separation on, wings and bodies over which the flow is turbulent. The study is restricted to devices that extend beyond the viscous sub-layer but are on a smaller scale than geometric features of the aircraft (e.g. wing chord).
The review is mainly concerned with developments within the UK, although significant developments in other countries are discussed.
The review discusses types of flow that need to be controlled, basic features of flow control devices and applications. It concludes with recommendations for future research.