Mr.BA From Singapore, joined Sep 2000, 3423 posts, RR: 22 Posted (12 years 2 months 6 days 18 hours ago) and read 1194 times:
I came across this question when I am playing my FS 2000 B747-400 proffesional pack.
At what Vspeed and IAS generally does a B747-400 climb when it took off from maximum take-off weight in reality? On my FS2K, I am about half of the maximum take-off weight of the B744, climbing to FL350, only passing 15,000 feet and with a IAS of 270 knots, I am at full power. If this is the case, how does the B747-400 climb in reality with full weight? And, I virtually cannot climb when I took off on Maximum take-off weight but in reality I see those close to MTOW B744s can climb at a reasonable rate. Or is it just FS2K inaccuracy?
Can someone explain to me what are the procedures to climb a B744, may it be light or heavy? I would really love to know.
AJ From Australia, joined Nov 1999, 2380 posts, RR: 26 Reply 1, posted (12 years 2 months 6 days 7 hours ago) and read 1065 times:
In reality a heavy B744 would only just be completing flap retraction at 270kts.
Depending on the cost index being used for the flight an economy climb would be at about 340kias, transfering to M0.84 or so in the higher levels. The local ATC 250kias below 10,000' does not normally allow economic climb at high weights.
By 'half Max Takeoff' what do you mean?
AJ From Australia, joined Nov 1999, 2380 posts, RR: 26 Reply 4, posted (12 years 2 months 5 days 23 hours ago) and read 1005 times:
Hey Alvin, considering the average zero fuel weight of a B744 on a commercial operation is about 220 T, and you'd want at least 30 T of fuel you are looking at a minimum weight of about 250 T out of a possible 397 T. To be realistic half weight of 200 T is very light!
AJ From Australia, joined Nov 1999, 2380 posts, RR: 26 Reply 6, posted (12 years 2 months 5 days 6 hours ago) and read 947 times:
30T is our minimum flight load to prevent fuel pump uncovering in all flight regimes, critically in an aborted take off, when you don't want to have all the fuel flow forward and uncover the pumps, shutting the engines down when you need full reverse!
KU104 From Kuwait, joined Dec 2000, 29 posts, RR: 0 Reply 9, posted (12 years 2 months 4 days 10 hours ago) and read 921 times:
For what its worth I have asked many pilots about what V-speed and IAS to use on climb. Usually they say it depends on the weight of the Aircraft. The average say for a 6 hour trip on an A340 that is 3/4 full is 2100FPM. Also on takeoff you need a high trim number say about +7 or +8. ON FS2K this would give you a climb speed of 180kts with 20degree flaps, and 2500fpm and N1 at 92% (I never use full power as pilots say it reduces engine "wear & tear" and increases engine performance and life. You can tell most my flights are as realistic as possible lol). That is what I normally use and it is a believable climb speed. Stepping up the altitude I use 250 until 10000ft. Then 290 until FL250 (trim would still be at Take-off setting) I switch to Mach and let it hold 0.80 (on a 744) until it reaches a stable fuel flow. Finally let her climb to cruise altitude and set the cruise Mach. This is all depending in info I gathered and what I do to complete succesful flights on FS.
747-400buff From Australia, joined Jul 2001, 43 posts, RR: 0 Reply 10, posted (12 years 2 months 4 days 7 hours ago) and read 918 times:
Nice to meet another fellow flight simmer....
As many others seem to have responded to your question I will not bore you by repeating the answers of others. I will however, only point you in the direction of an EXCELLENT (sorry mate, but I have NO affilliation with this site and this is NOT a paid commercial) Website, that REALLY teaches you to fly the 747-400 .
The guys there are real gurus when it comes to technical questions...even if you DONT fly their software (It's designed for commercial pilots who want to upgrade their rating to a 747-400) feel free to ask your questions of them anyway
AJ From Australia, joined Nov 1999, 2380 posts, RR: 26 Reply 14, posted (12 years 2 months 3 days 7 hours ago) and read 880 times:
The Aerowinx sim is more of a procedural trainer, designed for 'real thing' type training. Don't expect to fly under the Harbour Bridge etc. in this one. The outside graphics consist of permently darkened runways and poor weather!
The inside graphics, however, are excellent.
Ryu2 From Taiwan, joined Aug 2002, 474 posts, RR: 0 Reply 16, posted (12 years 2 months 3 days 2 hours ago) and read 858 times:
There's a addon for PS1 called Scenery Injector that lets you connect it to a second computer running FS2000 to generate the scenery views, so you can have the best of both worlds -- PS1 realism and FS2000 graphics.
Sounds great -- I only wish I had a second computer!