RESCUE TRIMARAN-TYPE GROUND-EFFECT CRAFT Russian patent published in 2005 - IPC

FIELD: shipbuilding; designing rescue trimaran-type ground-effect craft.

SUBSTANCE: proposed ground-effect craft includes three fuselages-hulls which are interconnected by means of rectangular wings. Fuselage-hull located in axis of symmetry of ground-effect craft is extended forward. Ground-effect craft has keel and swept stabilizer. Fuselages-hulls are stepped in construction and are provided with several tiers; they are divided lengthwise into compartments. Length of side fuselages-hulls exceeds length of center fuselage-hull by at least twice. One of rectangular wings has passage inside it for connection with side fuselages-hulls. Swept wings at negative dihedral angle (v) are provided on external side of two fuselages-hulls in accordance with position of rectangular wings. End of each wing is secured to mooring rod protected on the outside with streamlined elastic belt. Lower part of said rod performs function of stall fence during flight. Bottoms of each fuselage-hull have recesses where extensible hydrofoils are mounted; area of hydrofoils is variable which is effected by means of remote control system. At the top each fuselage-hull is provided with evacuation and inspection openings covered with acrylic plastic and located at distance relative to one another. Mounted on front upper part of fuselage-hull lying in axis of symmetry of ground-effect craft is aerial rudder; tail parts of two side fuselages-hulls are provided with extensible coaxial propellers and hydrodynamic control surfaces. Mounted on last rear rectangular wing between side fuselages-hulls on streamlined brackets are ramjet engines located at equal distances. Turbo-jet engines are mounted on similar brackets at the same level with ramjet engines.

EFFECT: improved service characteristics of ground-effect craft.

4 cl, 9 dwg