MOVABLE TAILPLANE FOR AIRCRAFT Russian patent published in 2001 - IPC

FIELD: aviation. SUBSTANCE: tailplane has two separate halves which consist of skeleton 5, intermediate ribs 13 and extreme ribs 12, front wall 9 and swept spar 10. halves of tailplane have half-axles 7 for suspension in tail section of fuselage, brackets of drive and trailing-edges and root parts. Tailplane is also provided with fairing 8 of drive bracket mounted on root part 16 located behind half-axle 7. Second swept spar 11 is connected with front wall 9 together with first spar 10 through ribs. Trailing-edge part is provided with ribs 14 which are used for connection of second spar 11 with root rib 5 and trailing-edge 4. Root part 16 has diaphragms 15 connecting the side wall and trailing-edge of root part with skin. Part of each half of tailplane is provided with upper and lower panels between front wall and second spar 11; these panels are of bonded-and-riveted construction. EFFECT: reduced mass at retained adequate strength and high aerodynamic characteristics. 9 cl, 6 dwg