発電用300kWCGTのセラミックタービン動翼の翼形状精度ならびに回転強度評価結果

概要

論文の詳細を見る
The profile accuracy, ±0.1mm required for the high pressure turbine rotor blades in the CGT301 project promoted by NEDO (New Energy and industrial technology Development Organization) was achieved with focusing on the design at the stress concentrating points. The profile accuracy of the complex shaped rotor blades was directly associated with the performance of a CGT (Ceramic Gas Turbine). The newly developed blades showed sufficient reliability in spin tests carried out at room temperature in vacuo; the average burst speed of these blades was over 160% (90,700rpm) of the rated spin speed, at which the atress ratio to the rated speed was over 250%. The calculated burst strength was 790MPa which was close to the bending strength of the test pieces cut out from the blades, 870MPa.
社団法人日本ガスタービン学会の論文
1995-09-10