e/Prehistory of endurance UAVs

Information
has gloss	eng: The idea of designing an Unmanned Aerial Vehicle (UAV) that could remain in the air for a long time has been around for decades, but only became an operational reality in the twenty first century. Endurance UAVs for low-altitude and high-altitude operation, the latter sometimes referred to as "high-altitude long-endurance (HALE)" UAVs, are now in full service. This chapter describes the evolution of the endurance UAV concept.
lexicalization	eng: Prehistory of endurance UAVs
lexicalization	eng: The Prehistory Of Endurance UAVs
instance of	c/Unmanned vehicles