Device for launching a projectile using a compressed fluid

A device for launching using a compressed fluid, the device comprising:

• a projectile including a front end and a back end;
• a barrel having a first end and a second end, the projectile being positioned inside the barrel, the first end configured to allow the compressed fluid to enter the barrel, the second end configured to allow the projectile to exit the barrel;
• a reservoir of the compressed fluid connected to the first end of the barrel
• and including a connecting device,
• wherein the connecting device includes a first tape configured to make a transition from:
• a first configuration wound about an axis Z around a support that is fixed in the barrel, to
• a second configuration deployed along an axis X that is substantially perpendicular to the axis Z,
• wherein the tape includes an end fixed to the back end of the projectile by a connection element, and
• wherein the connection element is a mechanical component configured to allow the projectile to rotate about the axis X and allow a portion of the tape including the end of the tape fixed to the back end of the projectile to remain along the axis X.