automatic pilot
noun🔊/ˌɔːtəmætɪk ˈpaɪlət/
🔊/ˌɔːtəmætɪk ˈpaɪlət/
(also autopilot)
[countable, uncountable]Idioms a device in an aircraft or a ship that keeps it on a fixed course without the need for a person to control it （飞机的）自动驾驶仪；（船的）自动操舵装置 The aircraft was set on automatic pilot. 飞机上配置自动驾驶仪。