Patent ID: 6655921
Filing Date: 2003-12-02
Classification: B23P,F01D,F04D,F05D,Y02T

Abstract:
Rotor blade of hybrid design comprising:a vane and a blade root, said vane having a first vane portion made of a metallic material and a second vane portion made of a lightweight material, wherein: a rear edge of said rotor blade is formed on said second vane portion, and said second vane portion is joined to said first vane portion in a single-section-type manner, said second vane portion and said first vane portion are joined together in a joint surface formed at an area of said first vane portion and at an area of said second vane portion; and a curve formed by the section of said joint surface with a profile section is in one-to-one correspondence with the median line of said profile section.