RADAR CIRCULAR SCANNING AIRCRAFT Russian patent published in 1996 - IPC

FIELD: aeronautical engineering. SUBSTANCE: aircraft has fuselage in whose center portion engines are mounted by means of pylons for rotation in vertical plane, wing articulated of lifting surfaces secured in nose and tail sections of fuselage and forming closed loop around it as convex polygon, mainly of regular shape in plan, for example, square, vertical and horizontal tails. Wing fairing is made of radioparent material on side of radar scanning. Arranged inside wing along radioparent fairing are antennae mounted over external contour of wing lifting surfaces with outer wing panels secured in wing span in direction of bisector of exterior angle at intersection of adjacent lifting surfaces. Wing is inclined to horizontal plane of fuselage and is secured on vertical tail; horizontal tail is located under wing inside its outer contour; tail is twin-finned; nose horizontal tail is located in parallel with nose lifting surfaces of wing; rear horizontal tail is articulated from lifting surfaces forming closed polygon whose rear lifting surfaces are located in parallel with rear panels of wing; additional antennae may be arranged inside horizontal tail along fairing made of radioparent material which makes it possible to use antenna-feeder assembly separately in reception and transmission modes. EFFECT: similar resolving power in all directions due to reduction of effect of parts of airframe on directional pattern of antennae at enhanced aerodynamic and flight characteristics. 6 cl, 14 dwg