The wing has a rounded trailing edge to tangentially eject the air through the Coandă effect thus causing lift.
[3] The benefit of the circulation control wing is that no extra drag is created and the lift coefficient is greatly increased.
Finally, the CCW system could be used on multi-engine aircraft in the result of an engine failure to cancel the asymmetric forces from the loss of power on one wing.
[4] The use of a CCW system eliminates the need for large complex components in the free stream such as flaps and slats, greatly reducing the noise pollution of modern aircraft.
Other options are taking the exhaust gases (which must first be cooled) or using multiple, lightweight gas generators, which are separate from the main aircraft engines.