Development Study of Carbon-Carbon Turbine Disk for ATREX Engine

摘要

Cold spin test of 3DC/C disk were carried out to elucidate the feasibility for the turbine disk of ATREX engine. The fly-out behavior occurred before the total fracture of the disk and the shaft vibration simultaneously increased. The fly-out behavior was characterized by the delamination of the fiber bundles from the surface of the 3DC/C disk. Partial siliconization was shown to be effective to improve the onset speed of fly-out behavior. The machinability of 3DC/Cs for turbine blade are also examined and the tip radius can be machined with 0.5 mm.