FAN ROTOR BLADE OF AIRCRAFT JET ENGINE Russian patent published in 2016 - IPC F01D5/14 F04D29/38 

FIELD: instrument making.

SUBSTANCE: fan rotor blade comprises blade body and shell made more rigid than blade body. Blade body is made from composite and includes trough, backrest, section of front edge section rear edge end tip in longitudinal direction and end of base in longitudinal direction, held by fan disc. Shell extends in lengthwise direction of blade body, covers section of front edge and is fixed on it. Shell includes tip end section, which is located closer to end side of fan rotor blade tip in lengthwise direction than end tip blade body to cover end tip blade body. End section end extends from front edge to section rear edge of housing of blade, and ends located downstream end section of tip end section. Lying downstream end section end section of tip of shell is located within the range of 20 % from rear edge of rotor blade or extends downstream than section rear edge of housing of blade.

EFFECT: invention allows reducing weight of blade and increasing its resistance to impacts by foreign object.

2 cl, 8 dwg