Connection system and connecting method for transferring fluids between two vehicles or between a vehicle and a fixed structure

A connection system for transferring a fluid between two vehicles, the connection system comprising:

• an active unit configured to be fixed to one of the two vehicles;
• the active unit comprising:
• an active connection assembly connected to a first supply conduit, the active connection assembly including a first connector coupled to the first supply conduit, an active sleeve externally coupled to the first connector, and first sealing means fixed inside the active sleeve which, in a fluid disconnection position, surrounds the first connector in a manner that prevents an outflow of the fluid from the first connector;
• drive means configured to move the active sleeve from the fluid disconnection position to a fluid connection position;
• a passive unit configured to be fixed to the other of the two vehicles, the passive unit comprising:
• a passive connection assembly connected to a second supply conduit, the passive connection assembly including a second connector connected to the second supply conduit;
• the drive means configured to move the active sleeve from the fluid disconnection position to the fluid connection position without axially moving the first and second connectors, in the fluid connection position, the active sleeve partially housing the second connector, the first sealing means being arranged on the second connector such that fluid communication between the first and second supply conduits occurs through the respective first and second connectors.