w_a_s_p_i_e
Posts: 170
Joined: Fri Feb 22, 2002 8:43 pm

Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:04 am

In my opinion the 3 engined aircraft are the best (too look at and fly in, it doesnt matter to me if its small or big leg room, youre still flying a 3 engined aircraft!!). L1011 Tristar (my favourite) was brilliant, DC10 and MD11 are great, B727 was good, TU-154 is good and Trident was good. But now with all these nice 2 engined aircraft that seem to be coping very well (777/A330...) do you think the 3 engined jets will come back? There is still a need for 4 engined aircraft, the A380 is being made!! But what is your opinion on the future of 3 engined jets?

Mark
 
clipperno1
Posts: 641
Joined: Tue Jun 01, 1999 12:47 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:07 am

Engines got stronger and more relieable over the last decades. So with efficeny and maintance costs in mind, I don't think we're going to see any again...maybe from the russians.
"I really don't know one plane from the other. To me they are just marginal costs with wings."� Alfred Kahn, 1977
 
srbmod
Posts: 15446
Joined: Tue Mar 20, 2001 1:32 pm

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:09 am

With engine reliablity being what it is these days, the days of the tri-jet are numbered. You still have some airlines that will not use two engined aircraft (Virgin Atlantic), and others are using them, but only because it's the only option they have. The tri-jet is a good design, but it has one drawback, the #2 engine (the tail mounted one) is a MX nightmare.
 
astrojet
Posts: 553
Joined: Thu Aug 31, 2000 9:11 pm

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:10 am

I do like 3 holers, but I think the reason of placing 3 engines is when 2 engines are not enough powerfull, and this problem doesn´t exists now, even the big B777 has plenty with 2 engines. Anyway, it would be nice to see new three holers.
 
philb
Posts: 2645
Joined: Mon May 24, 1999 5:53 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:15 am

You missed one of the best 3 engine aircraft of all - the Trislander!!

As for tri-jets, sadly their day has probably gone, just as rear engine, T-tail jets are diminishing as well.

 
aamd11
Posts: 866
Joined: Sat Nov 17, 2001 11:54 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:24 am

That boeing BWB... doesnt that have 3???
they are all rear mounted ones from what i remember...
wether we will ever see one of them is up in the air, but who knows.

Best three holer: Trident!

A^A MD-11
 
Guest

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 4:40 am

Don't forget that there are still two quads out there ... the B747 and A340. Twins are fine until an engine (or two) stops operating. Also, don't forget that ETOPS is difficult and expensive to both obtain and maintain.
 
concorde1518
Posts: 723
Joined: Thu May 17, 2001 12:02 pm

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 5:19 am

Well, i remember reading that the third engine doesn't work anymore because, nowadays, 2 engined jets are just fine, and burn less gas. they are also very reliable. I think there was a debate not too long ago as to weather ETOPS saved an airline money or cost them.

The four engined jets are also good, because some planes need those extra engines, and the 4 engines allow the plane to have a higher cruising speed, and the extra 2 engines save wear and tear, since they don't have to run the engines as high.

Anyway, I read this on a post a couple of months ago, so I'm just guessing.

 Smile
 
Boeing Nut
Posts: 5078
Joined: Fri Feb 23, 2001 2:42 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 5:28 am

I think there is the possibility of an all new three holer in the future. The size and weight of the aircraft may not warrant four engines, then again, two may not be enough.
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
DIA
Posts: 3053
Joined: Sun Jan 28, 2001 2:24 pm

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 5:44 am

Boeing nut has it right.

Never say never. How about an aircraft the size of an A340-600 that runs on three engines. It might save money on fuel, money engines, and no expensive ETOPS.

I'm not going to get technical, I'm just saying you can't rule it out.

Besides, not too long ago, who ever thought we'd see something like a twin-engined jumbo the size of a 777-300 making Trans-Pacific routes? No one.

Now, when that idea was finally excepted as reality, who would've thought Airbus to throw us another line of four-engined airliners when everybody said two-engined airliners was sufficient for theis day and age?

Well, let's make everyone happy and surprise the industry with an all-new state-of-the-art three-engined jumbo.

I, for one, will definately not rule this scenario out.

Maybe Boeing will replace the 747 with a three-holer, we don't know. You say no way still? Well, I guess you may be right. Besides, you saw the Sonic Cruiser coming all along, didn't you.

My point exactly.

DIA

Ding! You are now free to keep supporting Frontier.
 
777236ER
Posts: 12213
Joined: Sat Aug 18, 2001 7:10 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 5:45 am

How about an aircraft the size of an A340-600 that runs on three engines

Or how about an aircraft the size of an A340-600 that runs on two engines?

*cough*777-300ER*cough*
Your bone's got a little machine
 
DIA
Posts: 3053
Joined: Sun Jan 28, 2001 2:24 pm

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 5:50 am

777236ER:

Exactly my point, nobody thought a twin-engined airliner the size of an A340-600, or 747, could be achieved and accepted. But it was with the *777-300*!

So why not a three-holer the size of all these aircraft!? Not two engines, not four engines, but a happy middle-ground of three engines.

DIA
Ding! You are now free to keep supporting Frontier.
 
4holer
Posts: 2733
Joined: Tue Feb 05, 2002 1:47 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 6:28 am

Ghosts appear and fade away.....................
 
BR715-A1-30
Posts: 6525
Joined: Thu May 30, 2002 9:30 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 6:31 am

Virgin Atlantic operates A320s and A321s don't they? They operate Twin Jets. I liked the 727 the best out of ANY Tri-Jets.
Puhdiddle
 
houstondallas
Posts: 89
Joined: Thu Jul 26, 2001 9:27 am

RE: Another 3 Engined Commercial Liner?

Wed Jul 17, 2002 9:57 am

Concorde1518, What are you talking about?

"The four engined jets are also good, because some planes need those extra engines, and the 4 engines allow the plane to have a higher cruising speed, and the extra 2 engines save wear and tear, since they don't have to run the engines as high."

The number of engines on a plane has absolutely nothing to do with it's cruise speed. It's about thrust and drag. Wear and Tear? The engines on a 4 engine plane runs as "high" as those on a 2 engine plane. It's not like they bolted some GE90's onto an A340 and idle her up to cruise!

houston

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