Translation guide
An aircraft that operates without a human pilot on board. In Japanese, the most common term is ドローン (drone), but more formal or technical terms exist depending on context.
Referring to a drone or unmanned aircraft in casual or general contexts.
The most common and widely understood term for an unmanned aircraft, especially small multirotor types. Used in news, conversation, and commercial contexts.
Recently, more people are enjoying aerial photography with drones.
Abbreviation for Unmanned Aerial Vehicle. Used in technical or military contexts, often by professionals or enthusiasts.
UAV technology is advancing rapidly.
Referring to unmanned aircraft used for reconnaissance, combat, or other military purposes.
Common term for military drones or unmanned vehicles (air, ground, sea). Often used in news about defense.
An enemy unmanned aircraft was spotted near the border.
Specifically 'military drone'. Clear and widely understood, though slightly less formal than 無人機.
Technical term for 'combat unmanned aircraft' (UCAV). Used in defense white papers or specialized articles.
Referring to unmanned aircraft in the context of aviation regulations, engineering, or research.
The standard term in Japanese aviation law and technical documents. Covers all unmanned aircraft, including fixed-wing and rotorcraft.
Safety standards for unmanned aircraft have been revised.
Unmanned Aircraft System, including ground control. Used in international or technical contexts.
Operating a UAS requires special training.
ドローン is the everyday word for a drone, especially small multirotor types. 無人航空機 is the formal, legal term that includes all unmanned aircraft, such as fixed-wing drones and large military UAVs. In casual conversation, ドローン is almost always preferred.
Flying a drone in the park is prohibited.
Registration of unmanned aircraft has become mandatory.
While 無人の航空機 is grammatically possible, it sounds unnatural. Use 無人航空機 or ドローン instead.
The company develops unmanned aircraft for delivery services.
He bought a new drone.
Formal term for unmanned aircraft, used in legal, technical, or official documents. Covers all types, including fixed-wing and rotorcraft.
Permission may be required to fly an unmanned aircraft.
A military drone was used for a reconnaissance mission.
Development of combat unmanned aircraft is underway.