Archive > Technical discussions

A320 problems

<< < (3/3)

EHM-1001 Robert:
Well,

jet pilots (as far as I know) use different climb tactics: basically the A/T is always ON.

When climbing above 10000 ft, climb rate is reduced a bit from +2000...3000 fpm down to +1000, and they gain speed of around 300...320 kts. Then, the role is to keep this speed through the climb. You need to adjust your V/S according to the speed, thus the airplane could keep the 320 kts. A typical climb profile could be (depends on actual plane and payload):
+2500 fpm until FL150
+2000 fpm until FL200
+1500 fpm until FL250

When the airplane reaches FL250, the A/T is switched to MACH mode, and the cruise speed is set, say M0.83 From this time they hardly go over +1000...1500 fpm, and slowly decrease it so much on the last few thousand feets, that the aircraft climbs only with +500fpm. Speaking about THEY, they ususally means the FMC or FMS computer in reality, but you can always spin your knobs in FS by yourself.

At EHM we tune the flight dynamics, until the aircraft is able to fly that climb profile. For this we need to tune engine power, and aerodynamics charts. If you feel your airplane could not do this profile, then something probably wrong with your FS.

And if you be able to fly that profile, and keep an eye on your speed, you will not get into 30 degrees nose up situations. Any plane that is reaching 30 degrees up will soon fall down like a brick...maybe not if it was a Red Bull acrobatic plane ;D

EHM-2198 Didimo:
Hey Robert thanks a lot for that new insight into the climbing profile. Normally I do the climbing myself and only engage the AP when I reached cruise altitude but I am going to try this.

Thanks again!

EHM-1001 Robert:
Your welcome ;) If you can afford to buy and try some payware aircrafts, you can learn a lot from their behavior in the air ;)

EHM-2204 Dmitri:
I use a payware A320. Usually I set Optimum climb after engine out ALT. She climbs at about 2400 fpm and reduces climb rate the closer you get to crz alt. With regards to stalling, I have done it. How I recovered was , AT off, AP off, Throttles IDLE, Nose down and once speed established, AT on AP on, set SPD. I have on occasion had to manually fly as the AT would not re-engage for some strange reason.

Taxxing. I use thrust of about 40% N1 to get rolling and then Idle. She rolls at about 23 kts. Corners should be between 10-15 kts.

Navigation

[0] Message Index

[*] Previous page

Go to full version