SouthernCRJ
Topic Author
Posts: 170
Joined: Tue Sep 18, 2001 5:23 am

Which Airliner Glides The Best?

Tue Oct 30, 2001 1:55 am


Which one?

I heard that the Caravelle and the 752 glide pretty good, is that true?

Best regards
SouthernCRJ
 
AirCanadaMan
Posts: 458
Joined: Sun Feb 27, 2000 4:42 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 2:01 am

If the words "Gimli Glider" ring a bell, you'd think 762.

Just think, a 762, running out of fuel and gliding for 1/2 hour, not to shabby.
 
Mark_D.
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 2:16 am

SouthernCRJ--Which one?

I don't know, and it'd take some doing (money incentives, etc.) to arrange for some kind of comprehensive testing 'bout that  Smile

But who'd you hear that from, about the Caravelle, and 752. I imagine any of the older and/or lower-cruising speed airliners glide the best, just from better lift from the less-swept-back wings. I reckon the Dornier 328 Jet would glide pretty darn well, for instance.

(and then of course there are all the turboprops to consider. You mention "airliner" so I'm not sure if you're excluding 'em entirely)

 
flightsimfreak
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 2:59 am

I'm guessing that a turboprop would glide further then a jet for two reasons: 1, the wings are generally not swept, or swept very little, and 2, you can't feather a jet engine, can ya'.
 
SouthernCRJ
Topic Author
Posts: 170
Joined: Tue Sep 18, 2001 5:23 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 3:30 am

Hi all,

I think you're probably right, the turboprops must glide
better than jetliners.

I took the data about the Caravelle and the 752 from
a magazine. They were probably talking about jetliners.

Anyway they said that one of the prototypes of the Caravelle flown between Paris and Dijon (265 km) with the engines at idle.They also said that actually its glide ratio can only be achieved by the 752 (but they don't said which was that glide ratio)


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Cheers.

PS: sorry me about my bad english.
 
CF-CPI
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Joined: Sat Nov 18, 2000 12:54 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 3:51 am

I don't know about turboprops in general, but the Vickers Vanguard was known to be a terrible glider. In fact, there was a joke amongst pilots:

Q: How do you know where a Vickers Vanguard will land?

(Ans: where you cut power)
 
SouthernCRJ
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Posts: 170
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 4:38 am

lol Big grin
 
ptica2000
Posts: 137
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 4:59 am

A330 and A310 are known as a good gliders.
Remember Happag Lloyd landing in Vienna LOWW and remember Transat A330 landing on Azores. Big grin

Now serious. A320 is realy reporated as a good glider. I was talking with a pilot and he said that they have problems slowing it down.
 
Superfly
Posts: 37735
Joined: Thu May 11, 2000 8:01 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 5:17 am

Wouldn't aircraft with rear-mounted engines glide well?
Like the IL-62, VC-10, 727, DC-9 etc.
Bring back the Concorde
 
azjubilee
Posts: 3384
Joined: Sat Apr 29, 2000 5:26 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 5:19 am

If you think bricks glide well, then most transport category airplanes glide very nicely.



AZJ
 
transswede
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Joined: Fri Sep 21, 2001 9:30 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 5:35 am

Any airliner that has a large wing-to-mass ratio should glide well.

Thus the A330-200 with its HUGE wing should be the one of the best, if not the best.
 
Greg
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Joined: Sat May 28, 2005 1:11 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 5:42 am

Then the 737-600 should be among the best as well.
 
Boeing Nut
Posts: 5078
Joined: Fri Feb 23, 2001 2:42 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 6:12 am

Which airliner glides the best?

I hope I never find out!!!  Laugh out loud
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
prebennorholm
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Joined: Tue Mar 21, 2000 6:25 am

RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 7:46 am

There is very little difference between gliding ratio (or lift/drag ratio) of different airliners.

They were all made to transport the maximum payload as far as possible spending as little fuel as possible.

They all have a gliding ratio very close to 20.

The physical aerodynamic laws involved have been known very well during the last 50+ years.

Some planes have a more generous wing loading. For instance a Caravelle 3 at MTOW has a wing loading of 64lb/sq.ft. while the same value for an A320-200 is almost double at 123lb/sq.ft. It doesn't mean that the Caravelle will glide much further from the same altitude, but it will have its best gliding ratio at a slower speed. It will glide roughly the same distance, but spend longer time doing so.

The great improvements in that period were in engine technology meaning less fuel and more payload or longer range. And stronger and lighter airframe structure meaning more payload and/or more fuel for longer range.

Put a pair of RR RB211-535 on a Boeing B-47 bomber from 1948, and performance will practically copy a 757 of today.

Regards, Preben Norholm
Always keep your number of landings equal to your number of take-offs
 
SouthernCRJ
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 9:35 pm

Thanks for the info Prebennorholm, it was very helpful.
 
cedarjet
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RE: Which Airliner Glides The Best?

Tue Oct 30, 2001 9:42 pm

Interesting stuff. Just off the top of my head, I'd put money on the A330 having the best gliding performance, those huge graceful wings look like they really FLY. It's the (British) Airbus wing that really makes those planes sell (and the financing of course). FBW increases efficiency (and weight) by a tiny amount (like, 0.5%) but when you read about seat-mile costs being 5% better than the equivalent Boeing, it's the brilliant Airbus wing that makes the difference.

Although I bet the 777 has good characteristics, those wings from the cabin look like those high altitude spy planes' wings (Gary Powers got shot down in one), you know, the incredibly long thin straight wings, black aircraft?
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz