System for the spraying of spray liquid for aircraft windshield, and cockpit provided with such a spraying system

An aircraft cockpit having a floor, and aircraft cockpit windshield and a system for applying spray liquid to the aircraft cockpit windshield, the system for applying spray liquid to the aircraft cockpit windshield comprising:

• a spray liquid supply circuit comprising:
• a source of pressurized spray liquid;
• at least one control valve for controlling a flow of the spray liquid;
• and
• a first piping portion connecting the source of pressurized spray liquid an the at least one control valve;
• a pressurized-gas supply circuit comprising:
• a tap mounted on a gas container;
• at least one check valve;
• and
• an auxiliary compressor connected between the tap and the at least one check valve;
• the system for applying spray liquid to an aircraft cockpit windshield further comprising:
• a nozzle for applying the spray liquid to the aircraft cockpit windshield;
• and
• a second piping portion connecting the at least one control valve, the at least one check valve, and the nozzle, wherein the pressurized-gas supply circuit delivers gas from the gas container to the second piping portion to purge the second piping portion and the nozzle.