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

A320neo Rotation

Wikiposts
Search

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

A320neo Rotation

Thread Tools
 
Search this Thread
 
Old 2nd June 2019 | 06:27
  #41 (permalink)  
25 Anniversary
 
Joined: Nov 1998
Posts: 2,135
Likes: 77
From: 🇬🇧🇪🇸
On the NEO, I don't notice any difference in the initial pitch up from the runway. However, approaching the initial climb pitch attitude, the required pull back on the stick is much less. This gives a tendency to overpitch if you don't anticipate it.
Totally agree with that. Also, I’ve been landing the sharklet equipped A320 NEO a lot recently onto 30 metre runways, judging the flare to touchdown smoothly is a lot more challenging than the non NEO imho.
Nightstop is offline  
Reply
Old 2nd June 2019 | 16:32
  #42 (permalink)  

Only half a speed-brake
20 Anniversary
 
Joined: Apr 2003
Posts: 4,459
Likes: 136
From: Commuting not home
@vilas you are describing the landing, and the opinions of my more experienced colleagues (albeit with PW) mirror your words. That is below 30 ft. If you cut the thrust on NEO to idle “IAE” style, the plane’d come to a standstill at around 10 feet.

Two different phases there.

The effect of decaying wind from which GS mini protects us is something that tends to happen below 150 ft, down to 25 I would say. Due to more lively thrust (whatever that is) the delta GS buffer needed reducing to 1/3 in order to prevent excessive energy at flare for the NEOs. That is my explanation of the article.

Last edited by FlightDetent; 3rd June 2019 at 01:34.
FlightDetent is offline  
Reply
Old 2nd June 2019 | 22:27
  #43 (permalink)  
15 Anniversary
 
Joined: May 2006
Posts: 911
Likes: 9
From: FL510
vilas, I think the difference is airspeed.
High airspeed, high idle thrust.
Descend with 280 kt idle thrust will still be high.
Cut the thrust at 20 feet doing 125 kt, residual thrust is far less.
safelife is offline  
Reply
Old 3rd June 2019 | 07:00
  #44 (permalink)  
15 Anniversary
 
Joined: Jun 2007
Posts: 3,443
Likes: 39
From: Wanderlust
About CFM 56 ceo having higher thrust than IAE at higher altitude there is a graph published by Airbus. About the rest I am also seeking an answer.
vilas is offline  
Reply
Old 29th June 2019 | 06:18
  #45 (permalink)  
 
Joined: Feb 2011
Posts: 1,893
Likes: 297
From: Oz
Have any pilots been briefed by your carrier on this rotation difference when converting to the Neo?

Or just like MCAS, is it just a wait and find out?

We are 12 months out from the Neo and I’ve asked the question but nobody knows. We’ve had issues with cadets slamming 321 tails down the runway so this could essentially get ugly if not properly briefed.
PoppaJo is offline  
Reply
Old 29th June 2019 | 13:16
  #46 (permalink)  
20 Anniversary
 
Joined: Mar 2006
Posts: 2,633
Likes: 137
From: USA
Originally Posted by PoppaJo
Have any pilots been briefed by your carrier on this rotation difference when converting to the Neo?

Or just like MCAS, is it just a wait and find out?

We are 12 months out from the Neo and I’ve asked the question but nobody knows. We’ve had issues with cadets slamming 321 tails down the runway so this could essentially get ugly if not properly briefed.
We got a paragraph saying that there are differences.
Check Airman is offline  
Reply
Old 30th June 2019 | 00:28
  #47 (permalink)  
20 Anniversary
 
Joined: Jan 2004
Posts: 3,246
Likes: 202
From: Here and there
Originally Posted by PoppaJo
Have any pilots been briefed by your carrier on this rotation difference when converting to the Neo?

Or just like MCAS, is it just a wait and find out?

We are 12 months out from the Neo and I’ve asked the question but nobody knows. We’ve had issues with cadets slamming 321 tails down the runway so this could essentially get ugly if not properly briefed.
​​​​​​

We didn’t get anything regarding rotation differences and having flown it a number of times I don’t see any need to spell out the differences. If you are in the habit of flying the result rather than the input then it should be no issue at all, ie, raise the nose to 15° at the appropriate rate and let you hand do whatever is required to make that happen.
AerocatS2A is offline  
Reply
Old 30th June 2019 | 22:11
  #48 (permalink)  
20 Anniversary
 
Joined: May 2002
Posts: 379
Likes: 4
From: Sale
Originally Posted by AerocatS2A
​​​​​​

We didn’t get anything regarding rotation differences and having flown it a number of times I don’t see any need to spell out the differences. If you are in the habit of flying the result rather than the input then it should be no issue at all, ie, raise the nose to 15° at the appropriate rate and let you hand do whatever is required to make that happen.
I agree completely. It is definitely different, however my technique is the same. Pull back a bit, see what happens and then adjust accordingly.
Field In Sight is offline  
Reply
Old 1st July 2019 | 11:40
  #49 (permalink)  
25 Anniversary
 
Joined: Feb 2000
Posts: 4,704
Likes: 589
From: 500 miles from Chaikhosi, Yogistan
FCOM has been reworded “based on customer feedback” jun 19 changes.

but the rotation “mode” technique is unchanged from CEOs. Renamed from law to a mode.

havent flown it, just the FCOM messenger.
compressor stall is offline  
Reply

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



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.