Gas generator with reactive gases

A gas generator with reactive gases, the gas generator comprising:

• a first reserve of pressurized gas delimited by a first wall containing a first reactive gas;
• a second reserve of pressurized gas containing a second reactive gas;
• an ignition device capable of being actuated in order to open the lids and initiate combustion of the first reactive gas with the second reactive gas in order to generate combustion gas, the ignition device provided in a first longitudinal end of the generator and operative to generate a pressure wave upon actuation;
• at least one outlet orifice for the combustion gas;
• a diffusing device for diffusing combustion gas towards an outside, the diffusing device along with the ignition device, the first gas reserve, and the second gas reserve being successively positioned along a longitudinal direction,
• a first closing lid closing the first reserve and capable of being opened, the first closing lid provided between the first gas reserve and the diffusing device;
• a second closing lid closing the second reserve capable of being opened, the second closing lid provided between the diffusing device and the second gas reserve;
• and
• a guiding wall, distinct from the first wall, provided in the first gas reserve for guiding a pressure wave generated by the ignition device up to the first lid in order to open the first lid;
• the diffusing device delimiting a conduit for letting through gas, which is laid out so as to guide the pressure wave from the first lid to the second lid in order to open this second lid, and which communicates with the outlet orifice.