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G-force in an airliner (Read 844 times)
Reply #15 - Apr 15th, 2004 at 5:19pm

Nexus   Offline
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What I meant was that the Kaitak turn would probably be a tiny bit steeper than *other* typical approaches... Wink

Thanks for the info Nexus! Grin
Now, what about the vertical speed thing?


Wow, that's a tough cookie. It all depends:
Aircraft gross weight. temperature, pressure altitude, engine settings.

A 737-600 would kick the A340's ass when it comes to climb rate. Twins are generally overpowered (if one engine fails)

But initial climb rates can range everything from 2500ft/min to 4000ft/min. It's impossible to give a general answer here Smiley

As for descents, the Boeing 737 can descend in many different ways:
Vertical speed mode: Select a given vertical speed and the aircraft will adjust power and pitch to maintain the selected VS

VNAV P(A)TH: The aircraft will track the vertical profile of your flightplan while maintaining either 290knots or M.78 (I think). Deviations of the vertical speed, but expect a descent between 1700 to 1500ft/min.

LVL CHG: Short for level change. The aircraft will descend with idle thrust to maintain the selected speed on the MCP (glareshield panel). Speed has authority here so the aircraft will use pitch commands to maintain the speed, this will off course also lead to deviations in vertical speed. Vertical flightplan profile is ignored.
Can also be used during the climb phase.

How's that for a short, direct answer  Grin
 
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Reply #16 - Apr 15th, 2004 at 5:36pm

bm_727   Offline
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So basically what you're saying is that a pilot will generally descend or climb at about 2500->4000 fpm?

I'm just asking about what a pilot would normally climb/descend at to keep his pax comfortable Wink  I know that some people don't like it when the plane is pitched up at a 60 degree angle on take off Cheesy...
 

...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
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Reply #17 - Apr 15th, 2004 at 5:43pm

Craig.   Offline
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I know that some people don't like it when the plane is pitched up at a 60 degree angle on take off
Freaks:) Nothing better than a steep climb. And nothing beats a lightly loaded 757 for steep climbs:)
 
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Reply #18 - Apr 15th, 2004 at 6:37pm

Nexus   Offline
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Quote:
So basically what you're saying is that a pilot will generally descend or climb at about 2500->4000 fpm?


Yes, but not for the descent.
You can't descend too steep or else you'll pick up speed and won't be able to follow the profile of the flightplan by the time you need to reduce the speed to 250kts below 10.000ft.

The descents can be everything from 2000-1000ft when descending from cruise altitude. Hard to give you  specific answers, sorry  Embarrassed
 
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Reply #19 - Apr 15th, 2004 at 7:30pm

bm_727   Offline
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Hard to give you specific answers, sorry  Embarrassed

No problem, you answered my question... Wink
Thanks Nexus!! Grin 

There's no need for barf bags on my flights anymore Grin Grin...
...
 

...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
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Reply #20 - Apr 25th, 2004 at 8:14am

Lux13   Offline
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Hi!
About the maximum variometric rate of climb/descent,in general it's (maximum) 2500 ft per minute.Becouse if you have planned well your Climb/descent,you don't need muche more.....
But during take off,after rotating,it is much more.About 3000 ft per min or also more.......it's just that one necessary to mantain tha take off safety speed (V2) untill the acceleration altitude (generally 1500 ft,or 3000 if there's a noise abatment procedure).
And the maximum bank angle is 15° untill the aircraft reach V-MAN speeds,and then 25° for all the flight time!!
Cheers.
 

Thank God for let me fly!
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