PPRuNe Forums - View Single Post - What spool is driven while starting?

29th October 2004 | 16:49

#7 (permalink)

lomapaseo

Joined: Mar 2002

Posts: 4,569

Likes: 1

From: Florida

While burner howl is possible on the RR I always thought the howl was because with a 3 shaft system the shafts pass through a critical speed during spool up to idle.

I suspect somebody on this forum knows for sure.