English Dictionary

core lock

名詞

不可算名詞

(aviation, mechanical engineering) Seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.

日本語の意味

航空・機械工学分野において、タービンエンジンの停止後または火炎失火後に、異なる温度変化により各部品（固定部と回転部）のクリアランスがなくなり、位置ずれが生じた結果、エンジンが固着する現象

After the flameout, the engineers diagnosed a core lock in the left turbine when uneven cooling caused the rotating and stationary components to lose clearance and seize.

フレームアウト後、回転部品と固定部品が不均一に冷却されてクリアランスを失ったため、整備士は左タービンのコアの固着を確認した。

意味（1）

(aviation, mechanical engineering) Seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.

The lack of core rotation on the accident airplane engines was similar to the instances of core lock experienced by CF34 engines during Bombardier’s acceptance testing, except that the accident airplane engines were exposed to more severe thermal distress than the engines on the production airplanes. Specifically, the accident airplane’s engines flamed out from high power and high altitude, whereas the engines installed on the production airplanes were shut down only after their internal temperatures were stabilized.