spool up
Avancé (C1) neutral
When a jet engine or machine speeds up to full power; or to wind something onto a reel
"The pilot waited for all four engines to fully spool up before requesting clearance for takeoff."
When a jet engine or machine speeds up to full power; or to wind something onto a reel
"The pilot waited for all four engines to fully spool up before requesting clearance for takeoff."