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Basically, you can depend upon small surfaces with massive, high-speed "blowing" or larger surfaces with gentler "blowing." Gentle blowing is a lower risk from an engineering perspective. Well designed fluidic control surfaces would have to equal conventional hinged control surfaces to pass current certification requirements.

Fluidic controls benefit from fewer moving parts and reduced radar signature.


Fluidic controls are not new. Look at the blown landing flaps installed on Lockheed CF-104 Starfighter and Blackburn Buccaneer dating back to the 1960s.


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