STATOR BLADES OF AXIAL-FLOW COMPRESSOR Russian patent published in 2001 - IPC

FIELD: aviation engine Manufacture; swivel stator blades of axial-flow compressors of gas-turbine engines. SUBSTANCE: proposed apparatus has variable blades secured in outer case by means of upper trunnions and in detachable inner ring by means of lower trunnions; spherical base bushes are secured on lower trunnions and inserts are fitted between outer surfaces of spherical bushes and inner of detachable inner rings; these inserts have spherical inner surfaces made from antifriction materials, thus making it possible to press them to spherical bushes. EFFECT: enhanced efficiency and reliability due to reduced wear of control surfaces in axial and radial directions. 2 cl, 5 dwg