| 摘要 |
A gas propellor having at least one pair of diametrically opposed lateral nozzles for supplying a thrust force directed towards the rear of the missile or projectile includes a cake of solid propellant relatively insensitive to the combustion pressure, and opening-closing valves for each of the nozzles. These valves have sliding elements provided with pneumatic flip-flop actuators that are controlled by control circuits including a logic operator which prevents the simultaneous closing of the two nozzles of a same pair. The sliding elements of the valves are provided with mechanical safety means in order to limit the relative displacement of these sliding elements.
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