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

B-737 Ng: Are Thrust Levers Fly By Wire?

Wikiposts
Search

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

B-737 Ng: Are Thrust Levers Fly By Wire?

Thread Tools
 
Search this Thread
 
Old 15th October 2010 | 16:28
  #1 (permalink)  
Thread Starter
 
Joined: Jun 2001
Posts: 107
Likes: 0
From: Buenos Aires, Argentina
B-737 Ng: Are Thrust Levers Fly By Wire?

Hi,

With no AC power, if we loos all electrical power after the 60 minutes off battery, do we still have the thrust levers working or will thrust stay at the last set?

Regards,

Tango Air
TangoAir is offline  
Reply
Old 15th October 2010 | 17:02
  #2 (permalink)  
20 Anniversary
 
Joined: Apr 2004
Posts: 775
Likes: 2
From: near EDDF
Still working. You forget the EEC alternator.
IFixPlanes is offline  
Reply
Old 16th October 2010 | 13:48
  #3 (permalink)  
 
Joined: Sep 2010
Posts: 1,339
Likes: 0
From: earth
Yes, all FADEC engines I know of are powered by a PMG, if the engines are running your thrust module should be responsive, may loose all indication but you should have control.
grounded27 is offline  
Reply
Old 16th October 2010 | 14:11
  #4 (permalink)  
 
Joined: Jan 2010
Posts: 310
Likes: 0
From: Australia
Loos.......Loose......What is the queens english coming to?
Gas Bags is offline  
Reply
Old 16th October 2010 | 16:11
  #5 (permalink)  
 
Joined: Mar 2001
Posts: 4,563
Likes: 35
From: I wouldn't know.
A language nazi, the most famous kind of internet posters...
Denti is offline  
Reply
Old 16th October 2010 | 18:45
  #6 (permalink)  
25 Anniversary
 
Joined: Aug 1998
Aviation Qualifications: ATPL
Posts: 6,623
Likes: 847
From: Ex-pat Aussie in the UK
Ah! Godwin's Law in action.
Checkboard is offline  
Reply
Old 16th October 2010 | 19:08
  #7 (permalink)  
20 Anniversary
 
Joined: Feb 2005
Posts: 4,581
Likes: 0
From: flyover country USA
I've said it before: Given that several thousand readers may scrutinize your posts, your respectability is somewhat determined by your proper use of the language.

That said, if English is not your first language, I'll cut you some slack so long as I don't have too much trouble understanding you.
barit1 is offline  
Reply
Old 16th October 2010 | 19:08
  #8 (permalink)  
 
Joined: Oct 2008
Posts: 322
Likes: 0
From: Above & Beyond
You only have 30 minutes of battery unless your talking about a dual battery.
punk666 is offline  
Reply
Old 17th October 2010 | 04:18
  #9 (permalink)  
 
Joined: Sep 2010
Posts: 1,339
Likes: 0
From: earth
The Queen is impotent and her language is lost....
grounded27 is offline  
Reply
Old 17th October 2010 | 07:13
  #10 (permalink)  
20 Anniversary
 
Joined: Feb 2004
Posts: 1,410
Likes: 37
From: Australia
Loos.......Loose......What is the queens english coming to?
People in glass houses... should check their grammar

As previously stated, there is no time limit on engine control thanks to dedicated alternators on the engines. If the N2 rotor/gearbox keeps spinning above 15%, I believe, there will be enough power for the EEC.

Just don't let the engines flame out in bad weather. With flat batteries, you won't have ignitor power to relight them (irrespective of EEC power).
NSEU is offline  
Reply
Old 17th October 2010 | 11:17
  #11 (permalink)  
 
Joined: Mar 2001
Posts: 4,563
Likes: 35
From: I wouldn't know.
You only have 30 minutes of battery unless your talking about a dual battery.
Isn't the NG by default allways equipped with dual battery? Dunno really as all of ours are and we have a pretty weird mix.

(Oh, sorry about my bad english by the way, it is after all only a tertiary language for me.)
Denti is offline  
Reply
Old 17th October 2010 | 11:46
  #12 (permalink)  
20 Countries Visited
15 Anniversary
 
Joined: Jul 2008
Posts: 1,146
Likes: 31
From: Skating away on the thin ice of a new day.
I think tango is asking if it is totally electronic ,ie no mech cables attached to levers ( ie airbuses), not so much that the eec will still be powered by the n2 genny or that the engine is fadec.

edited cos I was confusing/combining classic and new gen.

Power is set and controlled electronically tango so yes it is FBW

Last edited by ampclamp; 17th October 2010 at 22:37.
ampclamp is offline  
Reply
Old 17th October 2010 | 11:56
  #13 (permalink)  
20 Countries Visited
15 Anniversary
 
Joined: Jul 2008
Posts: 1,146
Likes: 31
From: Skating away on the thin ice of a new day.
Hi Denti,
No, not all 737ng aircraft have 2 batteries.That, I am 100% sure of.
ampclamp is offline  
Reply
Old 17th October 2010 | 12:59
  #14 (permalink)  
 
Joined: Mar 2001
Posts: 4,563
Likes: 35
From: I wouldn't know.
Ah, thanks for that piece of information, seems my alteon difference CBT is once again incorrect. Honestly wouldn't be surprised if you order a basic 737 without any options all you get is an empty metal hull, even the flight controls can be optioned...
Denti is offline  
Reply
Old 17th October 2010 | 13:58
  #15 (permalink)  
 
Joined: Sep 2008
Posts: 570
Likes: 0
From: MI
Why is this question being asked here and not in the sim or at the company where flown?!
DC-ATE is offline  
Reply
Old 17th October 2010 | 16:42
  #16 (permalink)  
 
Joined: Sep 2010
Posts: 1,339
Likes: 0
From: earth
Why is this question being asked here and not in the sim or at the company where flown?!

Great question, I think I will ask all my stupid questions at work and rant like a lunatic when not asking questions at work from here on out.

Hell, why google anything? there is plenty of resource material at the library..
grounded27 is offline  
Reply
Old 17th October 2010 | 21:53
  #17 (permalink)  
Thread Starter
 
Joined: Jun 2001
Posts: 107
Likes: 0
From: Buenos Aires, Argentina
“-Why is this question being asked here and not in the sim or at the company where flown?”

1) It was asked at the sim center owned by the factory of the NG. No answer!

2) If a forum, specially the Tech Log at Pprune.org, is not a right place to make this kind of question, I'm missing something!

Anyway, thanks for all the replays!

Tango Air
TangoAir is offline  
Reply
Old 18th October 2010 | 09:31
  #18 (permalink)  
50 Countries Visited
15 Anniversary
 
Joined: Jul 2007
Aviation Qualifications: ATPL
Posts: 1,090
Likes: 83
From: Germany
Wink

DC-ACHE wins the prize for stupidest and least helpful answer of the week and as ever there has been some robust competition. How often do you go in the sim? Do you save up questions for six months. As ever there is rarely such a thing as a stupid question, just stupid answers. All our Ngs are dual battery, I cannot imagine any sane person specifying single battery.
lederhosen is online now  
Reply
Old 18th October 2010 | 11:54
  #19 (permalink)  
20 Anniversary
 
Joined: Apr 2004
Posts: 775
Likes: 2
From: near EDDF
Originally Posted by lederhosen
...All our Ngs are dual battery, I cannot imagine any sane person specifying single battery.
A lot of NGs flying around with only 1 battery:
- Most of the Aeroméxico NGs
- All of the All Nippon Airways NGs
- At least 1 of Southwest Airlines NGs
- At least 3 of Virgin Blue Airlines NGs
- At least 2 of COPA Airlines NGs
- At least 49 of Gol Linhas Aereas NGs
- At least 4 of Xiamen Airlines NGs
- At least 1 of Air Vanuatu NGs
- At least 2 of Hong Kong Express NGs
- At least 2 of Hong Kong Air NGs
- At least 2 of Hainan Airlines NGs
- At least 2 of Korean Air NGs
- At least 17 of Shandong Airlines NGs
- At least 2 of Hainan Airlines NGs
(List is not complete and configuration could be changed )
IFixPlanes is offline  
Reply
Old 18th October 2010 | 11:57
  #20 (permalink)  
Per Ardua ad Astraeus
 
Joined: Mar 2000
Posts: 18,575
Likes: 4
From: UK
Like he said?
I cannot imagine any sane person specifying single battery
BOAC is offline  
Reply


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.