SEAPLANE UNSINKABILITY SYSTEM Russian patent published in 1995 - IPC

FIELD: hydroaviation. SUBSTANCE: unsinkability system of seplane 1 has tight compartments, compressed air unit 6 connected with inlet hole 11 and delivery pipe line 13 passing through all pressurized compartments. Exhaust pipe line 14 has branch pipes 18 brought out to lower points of pressurized compartments and outlet hole with check valve 15. Exhaust pipe line 14 and delivery pipe line 13 are fitted in each compartment with remotely-controlled exhaust valve 16 and intake valve 16, respectively. EFFECT: enhanced unsinkability through avoidance of penetration of water into pressurized compartments via ventilation openings and through intensive dewatering of pressurized compartments. 3 dwg