AIRCRAFT Russian patent published in 2013 - IPC B64C39/10 B64C39/08 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering. Proposed aircraft comprises twin tandem top and bottom airfoils to create positive lift. Front airfoil consists of two outer wings. Outer wings can be arranged at larger angles of attach with respect to rear outer wings. Note here that root chords of outer wings adjoin the end chords of rear airfoil nearby the leading edge. Front airfoil has root chord smaller by magnitude than rear airfoil root chord. Aircraft engine is mounted in nacelle secured to wing front bottom by pylon. The latter is locate in aircraft mirror plane. Aircraft nose leg is secured to engine nacelle or to engine pylon. Passenger or freight compartment is arranged inside the wing. Aircraft wing incorporates arc-like ribs with passenger passageways there between. Said passageways are recessed relative to inner outline of arc-like ribs in direction their outer outline. Passageway floor line is divided in several sections located at different levels.

EFFECT: pitch stability, higher aerodynamics of rear airfoil and aircraft, decreased weight.

15 cl, 18 dwg