Inside The Airbus A321XLR’s Fuel Tank System

It is well known that commercial aircraft store their fuel in the wings, but while that is mostly true, it is not completely true. Some long-range variants have extra tanks installed, and at the heart of the Airbus A321XLR’s long range is the Rear Centre Tank. While the tank comes with some trade-offs and penalties, it allows the A321 to exploit the mid-sized aircraft market without having to design a cleansheet aircraft.