AIRCRAFT TAIL UNIT Russian patent published in 2003 - IPC

FIELD: aviation. SUBSTANCE: T-shaped tail unit includes fin with swivel stabilizer secured on its upper portion and provided with drive and articulated attachment points consisting of pair of forks; each fork includes inner and outer ears on stabilizer spar and ear of fin; connection unit is mounted in their holes in bearings. Each ear of fin consists of two parts where sleeve with ball bearing is mounted. Each outer and inner ears of stabilizer fork are connected with ears of fin by means of hollow bolt with duplicating bolt located inside it; duplicating bolt is tightened by nut and nut with lock is fitted for locking fin ears in required position relative to fork. Ends of said hollow bolts are located between forks at end clearance and are interconnected by means of intermediate bush embracing them; outer side of intermediate bush is provided with control crank secured by means of locking ring with bolt. EFFECT: enhanced survivability of aircraft. 6 dwg