Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

Absoulute and Service


Notices
Tech Log The very best in practical technical discussion on the web

Absoulute and Service

Old 5th February 2001 | 23:45
  #1 (permalink)  
captmu2
Guest
 
Posts: n/a
Post Absoulute and Service

Hello all,
Can anyone add any elightening information on the Absolute ceilings and Service ceilings. I know that this seems rather basic but I cant find it anywhere to verify my thoughts...500fpm (service) and 100fpm (absolute).....

Thanks in advance for any of your thoughts.
 
Old 5th February 2001 | 23:56
  #2 (permalink)  
m&v
Guest
 
Posts: n/a
Talking

old FAA reference stipulted 'service ceiling' required 100'rate of climb.
 
Old 6th February 2001 | 00:49
  #3 (permalink)  
NIMBUS
Guest
 
Posts: n/a
Talking

captmu2,
Service ceiling is altitude where 100fpm climb can be sustained. (50fpm for multi engine with one engine inop)
Absolute ceiling is altitude where airspeed for best angle of climb equals airspeed for best rate of climb (in effect, 0fpm, I guess!)
Not sure of the exact textbook definitions, but pretty close.

For turbine, I think absolute is defined as altitude where max available power is required to maintain level flight. Been a while, but I'll look it up and post here unless someone else does it first!
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.