Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
divemaster08
Topic Author
Posts: 209
Joined: Fri Jul 18, 2008 1:45 pm

A350-1000 VS B77W

Wed Apr 19, 2017 3:54 pm

Just doing some research on these two aircraft. Found some interesting numbers....

A3510
Length: 242ft
Wingspan: 212ft
MTOW: 679,000lb
Range: 7990nm (to possibly change with EIS)
Max Engine Thrust: 97,100lbf

B77W
Length: 242ft
Wingspan: 212ft
MTOW: 775,000lb
Range: 7370nm
MAX Engine Thrust: 115,300lbf

Ok so some numbers wise, both same length, same wingspan, around same range.

Huge difference however in MTOW and Engine Thrust!

Its also a note to take than the 77W is now around 12 years in service, and been in development for the past 20 years more than likely.

Is the A350 just then showing what a modern airliner can achieve now with modern technology and build materials? I was very impressed to see how much lighter she is compared to her competitor right now!

Its no wonder then why Boeing are pulling out the 777X if the A350 is going to be able to perform with these numbers.

Thoughts?
 
User avatar
LAX772LR
Posts: 15185
Joined: Sun Nov 09, 2014 11:06 pm

Re: A350-1000 VS B77W

Fri Apr 21, 2017 6:53 pm

divemaster08 wrote:
Is the A350 just then showing what a modern airliner can achieve now with modern technology and build materials? I was very impressed to see how much lighter she is compared to her competitor right now!

Its no wonder then why Boeing are pulling out the 777X if the A350 is going to be able to perform with these numbers.

Thoughts?

You sound surprised that a new generation aircraft will surpass a prior market holder + prompt a competitive response.

It's sort of a big "duh!".....
 
User avatar
77west
Posts: 1808
Joined: Sat Jun 13, 2009 11:52 am

Re: A350-1000 VS B77W

Fri Apr 21, 2017 8:35 pm

Part of the reason for the big difference in MTOW is that the operating empty weight is 155t for the A35J vs 168t on the 77W. 13t difference, with all the reduced fuel consumption, drag, smaller engines etc that that brings.
 
User avatar
keesje
Posts: 15156
Joined: Thu Apr 12, 2001 2:08 am

Re: A350-1000 VS B77W

Fri Apr 21, 2017 11:39 pm

What is the difference in fuel consumption moving 40t payload over 6000NM?
 
BenTheGreat97
Posts: 46
Joined: Sat Jul 16, 2016 5:18 am

Re: A350-1000 VS B77W

Sat Apr 22, 2017 1:45 am

keesje wrote:
What is the difference in fuel consumption moving 40t payload over 6000NM?


I heard from a captain on the 737 that for every 1,000 lbs of extra payload they bring, it costs an extra 100 pounds of fuel to haul it. No idea how that translates into an a350, but it gives some idea.
 
User avatar
Starlionblue
Posts: 21730
Joined: Fri Feb 27, 2004 9:54 pm

Re: A350-1000 VS B77W

Sat Apr 22, 2017 4:11 am

Apart from OEW, a big difference is the wing. The 777-300ER is a bit "underwinged" as it inherited the wing of the much lighter older variants (with the addition of raked wingtips). It is a lovely aircraft but there was a bit of brute force approach mounting massive engines to compensates. The 777-9x "corrects" this by making the wing larger, which will allow less powerful engines despite a larger aircraft.

The 350, on the other hand, has a very modern "long range cruise wing".

On the same route, in the 350we are almost always 4000-6000 feet above the triples.

Who is online

Users browsing this forum: No registered users and 35 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos