maxbc wrote:
I do believe there is a warmup time but it’s a lot faster than piston engines because starting up the engine (which can take half a minute) already sets up the thermodynamic flow, close to thermal equilibrium.
Off the A320 normal procedures: Operate the engine at or near idle for at least 2 mins before advancing to high power. Taxi time at idle may be included in the warm up period.
So, as I wrote above there is practically no delay between last engine start, checklists done, PEDs briefed, line-up, and then advance the levers to the FLX/TOGA position.
maxbc wrote:
the savings may not be that great
Yep, the savings are not that great, proof being all these brilliant ideas being on the back burner. For now…
Should the price of oil one day reach its true value as a finite ressource, or stop being subsidised, the following increase by say tenfold or much more would probably lead to the resurgence of those ideas… unless all airliners were to be electrified or hydrogenated by then 
Dan wrote:
unless all airliners were to be electrified or hydrogenated by then
I somehow doubt this will happen soon…
