MANEUVERABLE TRAINER MULTI-MISSION AIRCRAFT "YAK- 130" Russian patent published in 2000 - IPC

FIELD: aeronautical engineering; aerodynamic configuration of aircraft. SUBSTANCE: aircraft includes fuselage with deceleration flap in upper portion, landing gear, two-jet engines, swept wing with front root ogival extension and vertical and horizontal tails. Root extension 9 is made with span of 0.15 to 0.18 of span of wing outer panel 8 and with chord of 0.4 to 0.5 of magnitude of local chord. Leading-edge step 12 is made at distance of 0.55 to 0.65 of magnitude of semispan and with chord of on less than 0.074 of magnitude of local chord of wing 8. Step 16 is made distance of 0.25 to 0.35 of span of outer panel of horizontal tail 15 magnitude of its chord is no less than 0.2 of magnitude of local chord with step 16 taken into account. EFFECT: improved maneuvering characteristics of aircraft at increased angles of attack and at high load ratio. 3 cl, 16 dwg