jet engine to get full power

[The Basket]

I was reading something about the Asiana crash and wondered how long would it take for any jet to go for landing...go oops...and then initiate a fly off.

how long does the jet take to start producing power to get out of a bad situation?

 

[swampyankee]

If the engine is at flight idle, under 8 seconds, with maximum extraction for bleed air and maximum shaft power extraction. Most will probably do so faster.

 

[FLYBOYJ]

The engines on a modern airliner spool up pretty quickly, but remember, there's a lot of mass to move. I've been in a full motion 737-500 sim at United's training center and remember doing go-arounds, I don't remember any great delay in engine response time or large time lags to get the aircraft airborne again. Now in comparison, when I flew the L29 you could be looking at a 20/ 30 second lag from going to idle to full power and you didn't dare slam the power levers forward (you could induce a flame out). In an aircraft like that you always made sure you had enough airspeed so if you did have to go around you had time for the engine to spool up. Personally I liked to turn base to final a little fast and a little high because of this and could make final corrections with the speed brake.

 

[FLYBOYJ]

If the engine is at flight idle, under 8 seconds, with maximum extraction for bleed air and maximum shaft power extraction. Most will probably do so faster.

errr, that varies engine to engine.....