Go Back  PPRuNe Forums > Aircrew Forums > Biz Jets, Ag Flying, GA etc.
Reload this Page >

Biz Jet Cruise Altitude

Biz Jets, Ag Flying, GA etc. The place for discussion of issues related to corporate, Ag and GA aviation. If you're a professional pilot and don't fly for the airlines then try here.

Biz Jet Cruise Altitude

Old 26th Apr 2012, 14:14
  #21 (permalink)  
Join Date: Apr 2009
Location: Massachusetts, USA
Age: 54
Posts: 12
Maximum ceiling

Another factor limiting max ceiling is the requirement to return to (I believe) 15,000ft within 4 minutes - so wing design, speed brakes, MMO/VMO are all factors that contribute towards how fast an aircraft can descend and therefore the maximum attainable rate of descent can be a limiting factor in setting the service ceiling. Thrust is not always a factor - I believe the GLEX, G550 and C-750 engines are all designed to operate up to FL600.

As previous posts have noted, even though these aircraft all have FL510 as a ceiling, completions and empty weight are usually too high for the majority of these aircraft to reach or maintain FL510 for any useful length of time.

We operate a Global Express and similar to the G-IVSP that I used to fly, we target FL390-FL410 as our initial cruise altitude, step climbing several hours later to FL450. ISA and weight are the two controlling factors. The Global wing is optimized at M0.83, with normal cruise at M0.85 - long range cruise is usually a function of optimum TAS, but can be as slow as M0.77 for a 12 + hour leg.
GIVSP is offline  

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 - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.