FIELD: rocketry. SUBSTANCE: drive has housing 1 where pneumatic control devices are arranged for automatically locking and unlocking movable hollow rod 7 provided with control member 9. Motion of rod 7 is effected due to aerodynamic resistance acting on control member 9 when pressure in combustion chamber increases (reheat power) and due to elastic force of spring 13 when pressure in combustion chamber decreases (cruising regime). EFFECT: enhanced efficiency. 2 dwg
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