HULL-TYPE FUSELAGE OF SEAPLANE AND ALIGHTING GEAR OF SEAPLANE Russian patent published in 2004 - IPC

FIELD: aircraft manufacture; designing alighting gears for seaplanes and ground-effect vehicles. SUBSTANCE: hull-type fuselage is provided with hydrofoils located immovably along fuselage and hatch doors hinged to fuselage in area of its hydrodynamic part. Hydrofoils are located on extension of frames and are made in form of bows of aerodynamic contour; hatch doors are mounted in between them. Profile of doors corresponds to aerodynamic contour of lower part of fuselage. Doors may be opened when seaplane is water- borne for direct contact of hydrodynamic bottom and hydrofoils with water; in closed position, doors are supported hydrofoils, thus ensuring streamlined aerodynamic shape. Seaplane alighting gear includes fixed hydrofoils and hatch doors articulated in upper part of wells. Hatch doors are located along fuselage. Bows of hydrofoils are located discretely. EFFECT: minimum aerodynamic drag; simplified construction; reduced mass of seaplane. 3 cl, 3 dwg