spool down
English
[edit]Verb
[edit]spool down (third-person singular simple present spools down, present participle spooling down, simple past and past participle spooled down)
- (aviation, of a turbine engine) To decrease in rotational speed, producing a decrease in thrust.
- All ground personnel MUST be made aware that big jet engines take a considerable time to spool down. We don't want any more mechanics getting sucked in or catapulted across the apron.