19-09-2005, 12:36 PM
I'll do what I can, but someone who knows the aircraft better than I may be able to answer better than I...
Okay, the first thing you need to know is that landing speed is not a constant. It is a variable that is based upon several factors but the
most influential is aircraft weight. Now, if your 150 kts is what you calculated as a Vref, great! Thing is, that 150 should be what you're at
passing the threshold...not 8nm out. Also, check your weight to be sure you're not over the max landing weight. That would be another
reason for a stall out.
In the 747, 180 kts for ILS intercept is probably a good speed...you should most likely have around 10 deg of flaps at this point. Just
before intercepting the GS (it begins to move down), lower the gear and start slowing down...if you do this right, you should be adding
flaps incrementally along the way and simultaneously slowing down.
If you are exceeding 250 kts before you are airborne, I am convinced that you are way too heavy. Check your payload and make sure that
you do not have the aircraft overloaded.
With a full load, the 747-400 should still have a V2 speed somewhere between 180-190 kts. Once airborne, that thing should maintain
250 kts climbing out at roughly 4000 fpm.
For practice purposes, empty the plane out except for 25% fuel evenly distributed between the two wing tanks. Once you get the hang of it
there, then you can start boosting your payload and your fuel load for longer ranges. With that weight, just guessing here, your Vr should
probably be in the range of 160 kias, V2 around 170 kias.
Quote:The first is the fact the default plane stalls on ILS with full flaps and using auto throttle keeping the plane at 150kts which I think is
the landing speed.
Okay, the first thing you need to know is that landing speed is not a constant. It is a variable that is based upon several factors but the
most influential is aircraft weight. Now, if your 150 kts is what you calculated as a Vref, great! Thing is, that 150 should be what you're at
passing the threshold...not 8nm out. Also, check your weight to be sure you're not over the max landing weight. That would be another
reason for a stall out.
In the 747, 180 kts for ILS intercept is probably a good speed...you should most likely have around 10 deg of flaps at this point. Just
before intercepting the GS (it begins to move down), lower the gear and start slowing down...if you do this right, you should be adding
flaps incrementally along the way and simultaneously slowing down.
Quote:Second is take off, I take off the 747 with 3 clicks of flaps and almost everytime the plane rips the flaps off, I have tried taking off
using less than 90% full throttle, but the plane is too fast and as soon as you lift off, the plane is doing in excess of 250kts, even if you
take off with only 50% throttle which is way too unrealistic it still lfies too fast and you then stall it just off the ground, and you cannot get
out of stall in a 747 in fs2004, even at 40k feet, any suggestions, I have managed to take off once, using auto throttle to keep the speed
down.
If you are exceeding 250 kts before you are airborne, I am convinced that you are way too heavy. Check your payload and make sure that
you do not have the aircraft overloaded.
With a full load, the 747-400 should still have a V2 speed somewhere between 180-190 kts. Once airborne, that thing should maintain
250 kts climbing out at roughly 4000 fpm.
For practice purposes, empty the plane out except for 25% fuel evenly distributed between the two wing tanks. Once you get the hang of it
there, then you can start boosting your payload and your fuel load for longer ranges. With that weight, just guessing here, your Vr should
probably be in the range of 160 kias, V2 around 170 kias.
![[Image: 101031.png]](http://status.ivao.aero/101031.png)