The rotary weapons bays of the B-2 Spirit stealth bomber seen from the inside

The Northrop Grumman B-2 Spirit, besides being the most expensive airplane in aviation history, is undoubtedly one of the most unique.

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Designed without fins and with a giant wing shape to reduce its radar signature, this stealth bomber is equipped with two weapons bays located between the engines. These bays can carry up to 23,000 kg of various types of weapons, with different configurations using two types of racks: the BRA (Bomb Rack Assembly), a vertical rack for free-fall bombs (similar to those used by bombers in World War II), and the RLA (Rotary Launcher Assembly), a rotary launcher similar to those used by the B-52 and B-1B to carry nuclear weapons, including both bombs and cruise missiles.

The YouTube channel 3D Mil-Tech recently published an interesting computer-generated video showing the inside of these bomb bays, specifically demonstrating how the aforementioned rotary launcher works. In this case, the video shows the RLA launcher with GBU-31 bombs, the designation for conventional Mk-84 free-fall bombs equipped with Boeing's JDAM kit. These are bombs weighing 924 kilograms. To give you an idea, that's almost the weight of a Fiat 500. Each rotary launcher carries 8 of these bombs, 16 in total between the two bays.