The high-aspect-ratio flying wing eliminates vertical tail and conventional rudder, and uses instead a split drag rudder with large deflection as its directional control surface.

Finally, it is suggested that the flying wing configuration is an optimal selection of aerodynamic configuration design of an UCAV for reconnaissance.

In sum, those new flying quality characteristics must be concerned in the design of flying wings' configuration and flight system design and the enaction and implement of flying quality criterions.