Engines And APU Flashcards

1
Q

What does the Bowed Rotor Motoring (BRM) do?

A

Straightens the N₁ and N₂ rotor shafts, which bows due to thermal buildup after the engine is shutdown.

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2
Q

When is the Bowed Rotor Motoring (BRM) active?

A

6-90 seconds on the ground only. MOTORING is displayed on the N₂ gauge between 18-24% N₂.

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