Term Definition
UCASUnmanned Combat Air System...
UCAVUnmanned Combat Air Vehicle...
UCLASSUnmanned Carrier-Launched Airborne Surveillance and Strike System ...
UMASUnmanned Mapping Aircraft System...
UMAVUnmanned Mapping Aerial Vehicle...
Unmanned Aerial Vehicle "Unmanned aerial vehicle" means an aircraft that:  (a) does not carry a human operator; and (b) is capable of flight under remote control or autonomous programming. Indiana Code 35-33-5-0.5(7)...
Unmanned Aircraft System“Unmanned aircraft system” means an unmanned aircraft  and associated elements, including communication links and the components that control the unmanned aircraft, that are required for the pilot in command to operate safely and efficiently in the national airspace system. - California AB 1327...
Unmanned Aircraft System.. the term "unmanned aircraft system" (UAS) means an unmanned aircraft vehicle, drone, remotely piloted vehicle, remotely piloted aircraft or remotely operated aircraft that is a powered aerial vehicle that does not carry a human operator, can fly autonomously or remotely and can be expendable or recoverable. Unmanned aircraft system does not include: (i) Model flying airplanes or rockets including, but not necessarily limited to, those that are radio controlled or otherwise remotely controlled and that are used purely for sport or recreational purposes; and (ii) An unmanned aircraft system used in the taking of commercial photography. Idaho Senate Bill 1134...
Unmanned Aircraft System"Unmanned aircraft system" means an unmanned, powered aircraft that does not carry a human operator, can be autonomous or remotely piloted or operated, and can be expendable or recoverable. "Unmanned aircraft system" does not include any of the following: (a) A satellite orbiting the earth. (b) An unmanned aircraft system used by the federal government or a person who is acting pursuant to contract with the federal government to conduct surveillance of specific activities. (c) An unmanned aircraft system used by the state government or a person who is acting pursuant to a contract with the state government to conduct surveillance of specific activities. (d) An unmanned aircraft system used by a local government law enforcement agency or fire department. (Louisiana House Bill 1029)  ...
VLOSVisual Line of Sight...
WAASWide Area Aerial Surveillance ...