초록 ▼

An axial flow compressor for a bypass type jet engine has a low pressure stage which includes a one-piece, annular hoop shroud mounted to the airfoil of each of the rotor blades in the low pressure stage to divide the airflow entering the compressor into an outer, bypass airflow path and an inner ai

An axial flow compressor for a bypass type jet engine has a low pressure stage which includes a one-piece, annular hoop shroud mounted to the airfoil of each of the rotor blades in the low pressure stage to divide the airflow entering the compressor into an outer, bypass airflow path and an inner airflow path directed to the higher pressure stages of the compressor. The hoop shroud is formed of circumferentially wound, parallel fibers such as silicone carbide fibers embedded in a metal matrix material such as titanium, wherein the volume ratio of the hoop shroud is approximately one-third fibers and two-thirds metal matrix material.

대표청구항 ▼

Apparatus for dividing the airflow entering a low pressure stage of a jet engine compressor having low and high pressure stages, wherein a stage includes a rotor blade having a tip and root, said apparatus comprising: a one-piece, continuous annular hoop shroud bonded to said airfoil directly within

Apparatus for dividing the airflow entering a low pressure stage of a jet engine compressor having low and high pressure stages, wherein a stage includes a rotor blade having a tip and root, said apparatus comprising: a one-piece, continuous annular hoop shroud bonded to said airfoil directly within a notch formed at a location intermediate the root and tip of the rotor blade; said annular hoop shroud forming an outer air flow path for a portion of the air entering the compressor to bypass the higher pressure stages of the compressor, and an inner airflow path for another portion of the air entering the compressor to flow into the higher pressure stages thereof.