core lock

英語（米国） (en-US) 英語（イギリス） (en-GB)

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.

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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.

詳細

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.

詳細