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Module 15. Gas turbine engine

An abradable lining in the fan case
• prevents fan blade tip rub.
• produces less leakage at tips for anti-ice.
• provides acoustic medium.

bucks asking:
• how can it reduce noise?

Community comments: 3

Matas24
Posts: 7
21.06.2017 / 13:15

it's soft, chalk like material disables high frequencies exiting the fan blades

vale
Posts: 5
25.06.2021 / 15:14

I thought the primary purpose was to prevent fan blade tip rubbing against the case, can someone confirm?

c.stravopodis
Posts: 4
01.10.2025 / 13:18

Student here, it does reduce noise, but its main cause is to prevent tip rubbing of the fan blades with the case. To me, answer needs to be switched (Acoustic lining).

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