METHOD OF FIRE PREVENTION IN TAIL COMPARTMENTS OF LAUNCH VEHICLES AND FIRE PREVENTION SYSTEM IN THESE COMPARTMENTS Russian patent published in 2005 - IPC

FIELD: protective and emergency equipment for servicing ground launch structures.

SUBSTANCE: in launching the vehicle, compressed gas is fed through collector nozzles to engine zone via one of mains to main circular main where pressure more than 0.6 Mpa is maintained. Simultaneously, air is fed to engine zone through nozzles of additional collectors via two mains. As pressure drops below 0.6 Mpa, air is fed via two other mains supplying gas to main collector and via three mains of additional collector. In case of repeated drop of pressure to 0.6 Mpa, air is fed via two remaining mains of main collector. Proposed system includes compressed gas bottles and gas supply mains with controllable shut-off fittings. Mains are combined (five mains) by means of main and additional collectors. Additional collector is provided with two or more divergent nozzles. Fittings are made in form of normally closed pneumatic valves controlled by separate groups. Circular collector nozzles are conical in shape and are located at angles of 30 deg. and 45 deg. relative to vertical axis of launch vehicle.

EFFECT: enhanced efficiency of fire prevention.

3 cl, 6 dwg