Abstract: A simulator of free-fall containing air power generators (1) and appreciably cylindrical aerodynamic vein (2), in which evolve the persons (6) in state of free-fall, the wall (24) of which is realized by means of a film of flexible material stretched only by means of two frames (28) (29) fixed at the extremities of the aerodynamic vein (2) and to the superstructure (5) maintaining the aerodynamic vein (2). In particular the film of flexible material forming the wall (24) of the aerodynamic vein (2) is translucent and serves as screen to display from the outside of the vein (2) real or simulated images intended to be seen from inside of the aforementioned vein (2). In a particular mode of realization the air power generators (1) are arranged in a container for transport (74) and the superstructure (5) of the simulator can be disassembled so that the simulator is easily transported.