RAT = Ram Air Turbine

Un coleg mi-a aratat odata o chestie interesanta la un avion - Ram Air Turbine.

Cam asa arata turbina 

sursa - https://www.quora.com

Ce rol are? Genereaza curent in timpul zborului.

Detalii aici 

https://www.quora.com/What-would-happen-if-an-Airbus-A320-lost-all-power-in-flight-Would-the-pilots-still-have-control-of-the-plane-because-it%E2%80%99s-flown-by-wire