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
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Airbus 319 RAT Deployed , Ram Air Turbine use for emergency when electric power is lost on the aircraft. : r/EngineeringPorn
![turbine - Where can I get a high-res photo of the RAT from an A320 Airbus? - Aviation Stack Exchange turbine - Where can I get a high-res photo of the RAT from an A320 Airbus? - Aviation Stack Exchange](https://i.stack.imgur.com/EPo3v.jpg)
turbine - Where can I get a high-res photo of the RAT from an A320 Airbus? - Aviation Stack Exchange
![Know How and When to Operate Ram Air Turbine(RAT) in Aircraft Hydraulic System- Airbus A320 - YouTube Know How and When to Operate Ram Air Turbine(RAT) in Aircraft Hydraulic System- Airbus A320 - YouTube](https://i.ytimg.com/vi/3dz5yMPhnAY/sddefault.jpg)