747-400 tilted upwards?

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747-400 tilted upwards?

Postby Barbr » Tue Dec 02, 2008 11:58 am

Hi all:

My 747-400 at 35,000ft and 0.86mach seems to always have its nose pointed upwards at about 5-degrees.  Is this normal for this airplane with a standard weight and full fuel? I do not remember feeling like I was tilted upwards when I'm in a real airplane!

Kinda weird!

Thanks,
Barb  ;)
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Re: 747-400 tilted upwards?

Postby Wii » Tue Dec 02, 2008 12:30 pm

There is a fix for it SOMEWHERE...looked for a few minutes but couldn't find it. Have you installed FSX service pack 1 and 2 yet? I think the SP's solve this problem :)
http://www.fsinsider.com/downloads/Pages/default.aspx
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Re: 747-400 tilted upwards?

Postby N. Chapman » Tue Dec 02, 2008 1:28 pm

Yes this is normal for a plane to cruise with a nose up attitude. Planes are never perfectly level when they cruise.

and .86 in a 747? were you in a hurry or something? max cruise speed for the 747 is .85. and the MMO is .92 but you are burning excess fuel at that speed and lowering your range ;)
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Re: 747-400 tilted upwards?

Postby OVERLORD_CHRIS » Tue Dec 02, 2008 1:36 pm

Yes this is normal for a plane to cruise with a nose up attitude. Planes are never perfectly level when they cruise.



Like he said, this is normal all planes cruise like that, except maybe the SR-71. Then air up high vs thicker air down lower.
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Re: 747-400 tilted upwards?

Postby Barbr » Tue Dec 02, 2008 8:55 pm

Great, thanks guys for the info! It looks weird pointing a bit upwards, but anyways...


and .86 in a 747? were you in a hurry or something? max cruise speed for the 747 is .85. and the MMO is .92 but you are burning excess fuel at that speed and lowering your range ;)


Huh? The reference page on the clipboard (inside the program) says the cruising speed is M0.88, no?

:-?
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Re: 747-400 tilted upwards?

Postby Slotback » Tue Dec 02, 2008 9:07 pm

It's normal.

And if you're heavy you should probably start cruise at FL280 - FL300. Cruise speed is usually around .855 but can be higher or lower.
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Re: 747-400 tilted upwards?

Postby N. Chapman » Wed Dec 03, 2008 12:03 pm

Great, thanks guys for the info! It looks weird pointing a bit upwards, but anyways...


and .86 in a 747? were you in a hurry or something? max cruise speed for the 747 is .85. and the MMO is .92 but you are burning excess fuel at that speed and lowering your range ;)


Huh? The reference page on the clipboard (inside the program) says the cruising speed is M0.88, no?

:-?

dude you need to do your research. go on Boeing's website and it says the cruise speed right there. .85 is the number ;)

the MMO RVSM is .90 and the over all the MMO is .92 ;)
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Re: 747-400 tilted upwards?

Postby Barbr » Wed Dec 03, 2008 12:05 pm

dude you need to do your research. go on Boeing's website and it says the cruise speed right there. .85 is the number ;)

the MMO RVSM is .90 and the over all the MMO is .92 ;)


What is MMO, and RVSM? Sorry, I'm quite new at this...

So funny being called "dude" LOL  ::)
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Re: 747-400 tilted upwards?

Postby C » Wed Dec 03, 2008 12:33 pm

dude you need to do your research. go on Boeing's website and it says the cruise speed right there. .85 is the number ;)

the MMO RVSM is .90 and the over all the MMO is .92 ;)


What is MMO, and RVSM? Sorry, I'm quite new at this...

So funny being called "dude" LOL
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Re: 747-400 tilted upwards?

Postby BAW0343 » Wed Dec 03, 2008 2:33 pm

[quote]So funny being called "dude" LOL
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Re: 747-400 tilted upwards?

Postby Barbr » Wed Dec 03, 2008 4:47 pm

[quote][quote]So funny being called "dude" LOL
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Re: 747-400 tilted upwards?

Postby Anxyous » Wed Dec 03, 2008 4:51 pm

Great, thanks guys for the info! It looks weird pointing a bit upwards, but anyways...


and .86 in a 747? were you in a hurry or something? max cruise speed for the 747 is .85. and the MMO is .92 but you are burning excess fuel at that speed and lowering your range ;)


Huh? The reference page on the clipboard (inside the program) says the cruising speed is M0.88, no?

:-?

dude you need to do your research. go on Boeing's website and it says the cruise speed right there. .85 is the number ;)

the MMO RVSM is .90 and the over all the MMO is .92 ;)


It would be 'dudess' :P

Barbr, I believe N1 is the engine output in percent.

N2 would be RPM...

But don't take my word for it, I'm a small-prop guy myself :P :)
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Re: 747-400 tilted upwards?

Postby N. Chapman » Thu Dec 04, 2008 12:06 pm

Sorry if I came across a bit blunt :-[

Yeah I'm very sure that the most that you want to cruise at is Mach .85. If the sim was really detailed then you could do .855.

N1 and N2 are your low speed and high speed compressors in the engine. N1 is the first stage (Low speed) and then the N2 is the second stage (high speed). Since turbines work differently than piston driven engines the air needs to be compressed and then shot through and turns the fans at the back of the engine. these fans are connected to a shaft that turns the main fan in the front.

here is a neat video of the process.
http://www.rolls-royce.com/education/schools/how_things_work/journey02/flash.html

Hope that helps on how things work with the jet engine. :)
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Re: 747-400 tilted upwards?

Postby Fly2e » Thu Dec 04, 2008 12:13 pm

here is a neat video of the process.
http://www.rolls-royce.com/education/sc ... lash.htm...

Interesting!
COMING SOON!
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Re: 747-400 tilted upwards?

Postby BAW0343 » Thu Dec 04, 2008 1:36 pm

[quote][quote][quote]So funny being called "dude" LOL
Last edited by BAW0343 on Thu Dec 04, 2008 1:36 pm, edited 1 time in total.
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