Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
A330 & A340 Climb Rates  
User currently offlineAirEuropeUK733 From United Kingdom, joined Apr 2004, 975 posts, RR: 11
Posted (8 years 9 months 1 week 5 days 10 hours ago) and read 11960 times:

Please note that this is not intended to be a discussion of A v B or A340 v T7 bashing. Here goes...

In these forums I read about the climb rate being not too great on the A340 but no mention of the A330 climb rate.

Am I being ignorant but I thought the A340 was basically and A330 with 4 engines? Is this not the case?

If so would the A330 not suffer from the same 'problem' as the A340?

If someone could shed some light I would be very grateful.

Thanks

AE733


It's nice to fly with firends
11 replies: All unread, jump to last
 
User currently offlineLeanOfPeak From United States of America, joined Oct 2004, 509 posts, RR: 1
Reply 1, posted (8 years 9 months 1 week 5 days 9 hours ago) and read 11954 times:

One of the major limiting factors in the design of an aircraft is regulation governing engine-out performance; First and foremost the case of takeoff distance with an engine failure at the point where it takes the same distance to take off and get 50 feet off the ground or stop, and secondarily requirements governing one-engine-inoperative (OEI) climb gradients.

A side effect of this is that, since an OEI twin is working on 50% of its total thrust, but an OEI quad is working on 75% of its total thrust, the total installed thrust of the twin must be greater to attain required OEI performance.

The A330/A340 are no exception. Each of the A330's engines produces more than twice the thrust of each of the A340's engines.

The side effect of this is, of course, enhanced performance for a twin with both engines operating.


User currently offlineAirEuropeUK733 From United Kingdom, joined Apr 2004, 975 posts, RR: 11
Reply 2, posted (8 years 9 months 1 week 5 days 9 hours ago) and read 11948 times:

Ahh - I was forgetting that the engines on the two are different. Am I right in thinking that the A330 has GE/PW/RR engines whereas the A340 has only the CFM hairdryers?

Thanks

AE733



It's nice to fly with firends
User currently offlineStarlionblue From Greenland, joined Feb 2004, 16908 posts, RR: 67
Reply 3, posted (8 years 9 months 1 week 5 days 7 hours ago) and read 11913 times:

Quoting AirEuropeUK733 (Reply 2):
Ahh - I was forgetting that the engines on the two are different. Am I right in thinking that the A330 has GE/PW/RR engines whereas the A340 has only the CFM hairdryers?

You are right except that the 340-200/300/8000 has CFM hairdryers, which the -500/600 has Rolls Royce hairdryers with the maximum volume attachment.

[Edited 2005-07-12 19:22:26]


"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineSlamClick From United States of America, joined Nov 2003, 10062 posts, RR: 68
Reply 4, posted (8 years 9 months 1 week 5 days 6 hours ago) and read 11892 times:

What he said about the 50% vs. 75% is applicable to other types as well. There seems to be an unwritten rule that you will speak no evil about the 747 but frankly, the early ones at least were pigs!

I saw one a hundred miles up the coast from SFO on its way to Asia, just climbing through eleven thousand feet. That was with ALL FOUR burning. A Piper Apache on one engine would seriously outclimb it.



Happiness is not seeing another trite Ste. Maarten photo all week long.
User currently offlinePihero From France, joined Jan 2005, 4152 posts, RR: 76
Reply 5, posted (8 years 9 months 1 week 5 days 6 hours ago) and read 11888 times:
Support Airliners.net - become a First Class Member!

SlamClick,

Glad you wrote that.
At max takeoff weight,the 747-400 needs more than half-an-hour to climb to FL 290, its opt level eastbound.
I could provide the exact performance figures for both airplanes if you so wish.

And frankly,this "hairdryer" nonsense is getting old.

May I suggest you all find another way to describe it ?



Contrail designer
User currently offlineSlamClick From United States of America, joined Nov 2003, 10062 posts, RR: 68
Reply 6, posted (8 years 9 months 1 week 5 days 6 hours ago) and read 11886 times:

Quoting Pihero (Reply 5):
At max takeoff weight,the 747-400 needs more than half-an-hour to climb to FL 290

By contrast, I took off from sea level in a nearly gross-weight 767 and climbed from liftoff to FL400 in sixteen minutes.



Happiness is not seeing another trite Ste. Maarten photo all week long.
User currently offlinePihero From France, joined Jan 2005, 4152 posts, RR: 76
Reply 7, posted (8 years 9 months 1 week 4 days 16 hours ago) and read 11774 times:
Support Airliners.net - become a First Class Member!

SlamClick,
That's impressive. I used to fly L-1011's from Paris to the Gulf and just about every time I would be restricted to FL 310 because of a horde of 767's from London on the same route. Of course the Tristar is faster,but the 767's were well inside the jetstream tube,thus making a similar ground speed. Very frustrating.
On an other subject, last winter, on a 319, I took off at about max gross from Toulouse to Paris, flying into a well established northerly jetstream with a very nice and progressive wind gradient.The AT controllers played the game with us...Result was 10 minutes from brake release to fl 350. Couldn't go any higher because of an airway restriction. But that can hardly be the performance one can expect everyday from an airplane.

Regards.



Contrail designer
User currently offlineAirEuropeUK733 From United Kingdom, joined Apr 2004, 975 posts, RR: 11
Reply 8, posted (8 years 9 months 1 week 4 days 15 hours ago) and read 11763 times:

Quoting Pihero (Reply 5):
And frankly,this "hairdryer" nonsense is getting old.

May I suggest you all find another way to describe it ?

Apologies Pihero, no offence intended  Smile

AE733



It's nice to fly with firends
User currently offlineHauke From Norway, joined May 2005, 10 posts, RR: 0
Reply 9, posted (8 years 9 months 1 week 4 days 12 hours ago) and read 11710 times:

Hi everyone!

Quoting LeanOfPeak (Reply 1):
The A330/A340 are no exception. Each of the A330's engines produces more than twice the thrust of each of the A340's engines.

Just an added remark to this. Yes, true, the 330 engines produce around 300kN each and the 340 around 140kN each, meaning the 340 has around 40kN less thrust in total. With an engine failure the 330 has only 300kN to get airborne, the 340 though has 420kN meaning the max take-off weight of the 340 may be around 30% higher than that of the 330, although total thrust is actually lower on the 340

Does anyone know the exact rate of climb for a fully loaded A333 and a fully loaded A343? would be interesseting comparing it.

hauke


User currently offlineMir From United States of America, joined Jan 2004, 21092 posts, RR: 56
Reply 10, posted (8 years 9 months 1 week 4 days 7 hours ago) and read 11648 times:

Quoting Pihero (Reply 5):
And frankly,this "hairdryer" nonsense is getting old.

May I suggest you all find another way to describe it ?

The Little Engines that Could?  Wink  stirthepot 

-Mir



7 billion, one nation, imagination...it's a beautiful day
User currently offlineRendezvous From New Zealand, joined May 2001, 515 posts, RR: 0
Reply 11, posted (8 years 9 months 1 week 3 days 17 hours ago) and read 11558 times:

Nice call on that name MIR

Top Of Page
Forum Index

Reply To This Topic A330 & A340 Climb Rates
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
A330 & A340 Fuel Tank Configurations posted Sat Jul 9 2005 05:22:40 by KBGRbillT
A330 & A340 Main Landing Gear - Question? posted Wed Oct 8 2003 20:43:00 by Mr Spaceman
A340 Climb Perf posted Wed Aug 24 2005 19:44:29 by Frequentflyer
A319/A320/A321 Maximum Climb Rates posted Thu Feb 10 2005 11:22:59 by Widebody
Climb Rates On Various Aircrafts? posted Mon Jun 28 2004 06:44:02 by Wardialer
A330 & B767 Engine Component Question? posted Wed Oct 1 2003 01:34:29 by Mr Spaceman
Is This Normal A340 Climb? posted Sat Oct 12 2002 02:22:20 by Airplanetire
A330 & F.O.D. posted Sat Jan 26 2002 17:18:01 by DC10Tony
Initial Climb Rates posted Sat Dec 29 2001 13:11:35 by Rendezvous
A330 Or A340 posted Wed Nov 14 2001 23:45:28 by Kaddyuk
A330 Vs A340 Wing posted Thu Jul 30 2009 12:50:51 by DocLightning
A330 And A340 Exit Door 3 :Design posted Thu Oct 2 2008 15:39:03 by B773A346
Illegal Takeoffs & Safe Climb-Aways posted Sat Nov 10 2007 10:47:16 by Faro
A340 Climb Perf posted Wed Aug 24 2005 19:44:29 by Frequentflyer

Sponsor Message:
Printer friendly format