FIELD: engines and pumps.
SUBSTANCE: turboprop comprises at least of assembly (24a) of controlled-orientation fan blades (26) fixed with rotary ring (28a) articulated with turbine rotor. Every blade of said assembly is coupled with sync ring (30a) for orientation control. Additionally, this device comprises frictionless bearing (54a) with inner cage (56a) to slide on turbine crankcase. Said cage is connected with power cylinder (38) rod (44) and with outer cage (52a) engaged with sync ring with the help of multiple connection levers (40a). Levers are coupled with power cylinder rod and articulated with sync ring so that power cylinder actuation turns said sync ring about lengthwise axis. Turboprop comprises, preferably, turbine (20) with two rotors (22a, 22b) of opposite rotation and two fan (26) blade assemblies (24a, 24b) with controlled orientation.
EFFECT: reliable and accurate control, lower weight.
10 cl, 4 dwg
