Hot-gas-generating apparatus with ionic monopropellant and low voltage ignition

A hot-gas-generating apparatus for reacting a propellant comprising

• a combustion chamber (2);
• at least a first injector arranged in front of the combustion chamber (2), the first injector configured to block flow of propellant towards the combustion chamber (2), and the first injector including electrodes (5, 6);
• at least one supply line (1) for the propellant, whereby
• the propellant is a monergolic propellant and a substantially anhydrous ionic solution of very low vapor pressure, with a residual water content of less than five percent by mass, and configured to self-sustain combustion at a predetermined combustion chamber pressure;
• the electrodes (5, 6) comprise at least two electrodes of opposite polarity configured to electrically ignite the propellant by passing an electric current through the propellant when the propellant passes between the electrodes of opposite polarity;
• and
• for blocking the flow of the propellant towards the combustion chamber (2), at least a first automatically sealing injector head (5) situated between the combustion chamber (2) and the first injector, said first automatically sealing injector head (5) allowing the propellant to pass only when an inlet pressure of the first injector is greater than a crack-pressure and represents an overpressure relative to the combustion chamber pressure, and thus a sealing effect is achieved when the combustion chamber pressure exceeds the inlet pressure of the first injector minus the crack-pressure.