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BlackAlpha
Joined: 20 Jan 2007
Posts: 41
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| Posted: Tue Apr 03, 2007 1:56 am Post subject: Descent rate |
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What are the average descent rates from high flight levels... above FL300
for....
737s
747s...
767...
777...? |
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bromster
Joined: 28 May 2006
Posts: 166
Location: Cape Town, South Africa
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| Posted: Tue Apr 03, 2007 10:42 am Post subject: descent profile |
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Hi Blackalpha.
It varies depending on the pilot. I would consider an "normal" descent rate for any heavy aircraft about 2000ft/min. One day, with no speed restrictions from ATC, we did 4000ft/min. and it felt no different.
The "descent profile" is calculated during flight before the descent, so the pilots know exactly when to start descending and what descent rate to use. The calculation is based on things like distance to destination, aircraft speed, cruise altitude etc.
If you do The ATP pilot Descent Lesson, it makes it much clearer.
Bromster. |
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Shankar
Joined: 08 Dec 2005
Posts: 331
Location: Thiruvananthapuram, India (VOTV)
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| Posted: Sat Apr 14, 2007 1:14 pm Post subject: |
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Hi,
Would higher rates cause any discomfort to passengers? |
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heeshung
Joined: 07 Dec 2005
Posts: 549
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| Posted: Sat Apr 14, 2007 8:44 pm Post subject: |
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Usually no.
Once the G's of the initial descent has passed, it's 1G no matter if at -2000 feet/min or -5000. The only discomfort is if the aircraft is in free fall or that the pressure difference in your ears occur sooner. |
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