What is "kytoon"

n. A lighter-than-air kite, filled with gas and capable of staying aloft even without wind.

A kytoon or kite balloon is a tethered aircraft which obtains some of its lift dynamically as a heavier-than-air kite and the rest aerostatically as a lighter-than-air balloon. The word is a portmanteau of kite and balloon.

The primary advantage of a kytoon is that it remains in a reasonably stable position above the tether point, irrespective of the strength of wind, whereas ordinary balloons and kites are less stable.

The kytoon has been used for many purposes both civil and military.