Foam generating device for fire-fighting helicopter

A helicopter for fire-fighting, provided with a foam generating device, comprising:

• first means for mixing water with a chemical emulsion product or emulsifier under pressure;
• and
• second air-pressurized means for creating expanding foam from the water-emulsifier mixture and for projecting said foam on a site on fire, wherein
• said first means are arranged inside the helicopter and include a tank associated with a pump system and a mixer to deliver the mixture of water and emulsifier,
• said second means include a projection system with two base modules arranged on side faces outside the helicopter, each said module having a frame mounted pivotally around an axis between an upward inactive position and a lowered active position;
• a network linked with an outlet pipe of the mixer, the network located under blades of the helicopter and including a grid equipped with a multitude of sprinklers which can spray the mixture of water and emulsifier over a net of tightly knit synthetic material so as to produce the foam by pressurized air generated by the blades;
• and a lifting device of cables attached to the modules that moves the modules between the upward inactive position and the lowered active position.