The Hellenic Civil Unmanned Aerial Vehicle (HCUAV) RX-1 is a Greek research project, which has currently produced a prototype of a Medium Altitude - Long Endurance (MALE) Unmanned Aerial Vehicle (UAV), with aim for the aircraft to enter production in the future and be utilised in civil and potentially, military operations.

[1][2] The development started in 2013 and involved a consortium consisting of 6 partners, among them three University research groups including the Laboratory of Fluid Mechanics and Turbomachinery (LFMT) of the Department of Mechanical Engineering or the Aristotle University of Thessaloniki (AUTH), the CSL and the Laboratory of Robotics and Automation (LRA), as well as three private companies including MLS Innovation Ltd, Spacesonic Ltd and Intracom Defense Electronics (IDE).

[3][4] The HCUAV RX-1 prototype was designed, developed and built as a small to medium-sized MALE-UAV with main objectives surveillance and data gathering for civil protection authorities, making its first and successful flight 36 months after the initiation of the project.

In November 2020, Intracom Defense Electronics (IDE) was placed head of the consortium that now also included other Greek and European companies from Cyprus, Spain and the Netherlands, for the design and construction of stealth swarm drones, codenamed Project LOTUS (Low Observable Tactical Unmanned System),[6] based on the RX-3 prototype with ISR as its primary mission.

[8] These endogenous aircraft could be used in border and maritime patrol missions, high value target reconnaissance and surveillance, while utilising data-fusion technologies to cooperate with the Hellenic Air force future 4.5 and 5th generation fighters.