AMPHIBIOUS MULTI-PURPOSE AEROPLANE Russian patent published in 1998 - IPC

FIELD: seaplane building; designing of lifesaving amphibious aeroplanes. SUBSTANCE: aeroplane has fuselage, wing, tail unit, power plant and landing module with pillar-like buoy with constant displacement volume-float divided into two cavities by means of cylindrical tight partition: peripheral cavity with light gastight granules and central- cavity whose sections are vertically connected by means of hatches and ladders. Ends of buoy cylinders have centering rings with seals and shock absorbers, springs for example. Upper rings of float and sections of buoy located above them are provided with locks locking the sections in separated position. Counter-weight is movably secured to lower section. Buoy is connected with fuselage by means of quick detachable joints, for example in form of pneumatic coupling. Lift fans may be fitted in side fairings of fuselage at level of wing; lift fans are connected with cruising engines by means of drives. Fuselage bottom may be provided with rescue hatches and embarkation hatch above buoy. Surfaces of upper sections and float may be provided with cells where inflatable bags are located. EFFECT: extended range of weather conditions in lifesaving operations. 3 cl, 6 dwg