Why is there an RAT in the aircraft when we already have an APU in the aircraft? Doesn't it just add weight to the aircraft? - Quora
Planes, Aviation & Aerospace - Asian Chapter - The Ram Air Turbine (RAT) is at the heart of an aircraft's emergency power system. In extremely rare instances when airplanes lose power, the
![Airbus 319 RAT Deployed , Ram Air Turbine use for emergency when electric power is lost on the aircraft. : r/EngineeringPorn Airbus 319 RAT Deployed , Ram Air Turbine use for emergency when electric power is lost on the aircraft. : r/EngineeringPorn](https://external-preview.redd.it/VbCQzc6zbVFNYu4GiS1irdalOe-UWNeXmGfTT-QaKMg.png?format=pjpg&auto=webp&s=77dc3624bafa21865d45cbc2e7871c4c6817de6a)