Concorde planes don't have fuel tanks

What do you guys make of this?






Concorde tank info can be found here


[link to www.heritageconcorde.com (secure)]




Concorde’s fuel is stored in thirteen sealed tanks which are integral with the wing and fuselage structures. The fuel tanks are formed as sealed cells integral with the wing, centre fuselage and rear fuselage structure.To prevent fuel vapour entering the cabin, a vapour-seal membrane forms a double skin over the fuselage fuel tank cells. This area is pressurized and vented overboard.

Intermediate ribs and spars within the tanks reduce fuel surging and sloshing. As a result of modifications carried out between the years 2000 & 2001, tank numbers 5, 6, 7 and 8 are fitted with liners on the wing lower surface, which limit fuel leakage to a minimum in case of foreign object damage. The tanks also have structural expansion joints, located on the lower surface between the wing and fuselage, to allow for expansion and contraction of the aircraft structure caused by the thermal cycle induced by the supersonic/subsonic flight profile. The expansion joints are formed from two top hat sections which ramp down to a flat surface at either end where they attach to the spar cap flanges. The inner expansion joint forms part of the aircraft fuel tanks.