I know Concorde engines were FADEC. Were the Thrust levers gated like on Airbus? I noticesd cocncorde pilots shovved the levers forward for take off thrust..not the gentle easing forward like most other turbojets..why was there this need?Did they take too much time to spool up?
The engine was electrically signalled, but it wasn't FADEC; the control system(s) were analogue.
I suspect the zero bypass Ol 593 would take less time to spool up than todays high bypass engines.