Patent ID: 6471485
Filing Date: 2002-10-29
Classification: F01D,F04D,F05D,Y02T

Abstract:
A compressor rotor for a propulsion plant, said compressor rotor comprising a rotor blade carrier (18), rotor blades (1) secured to said rotor carrier, each rotor blade (1) comprising a metal blade root (2) securing said rotor blade to said rotor carrier (18), a first blade section (3) made of metal and a second blade section (4) made of fiber composite material, said first metal blade section (3) forming at least a portion of a blade leading edge (5), said second fiber composite material blade section (4) forming a blade trailing edge (11), means connecting said first metal blade section (3) and said second fiber composite material blade section (4) to each other along a trailing rim (12) of said first metal blade section (3), and wherein said first metal blade section (3) has a radial length along said leading edge (5) shorter than a length of said leading edge (5) and a surface area (15) extending between said radial length and said trailing rim (12) so that said surface area (15) has a size enabling said propulsion plant to deliver emergency power even if said second fiber composite material blade section (4) is broken off.