Why nobody should ever fly on a 777

Herr-Berbunch · 09-07-15, 04:09 PM

Please people, stay safe if you're travelling on a 777 soon - they have difficulty staying airborne with no fuel!

CNN's aviation experts don't say if this affects any other aircraft, Boeing or otherwise. Phew.

Schroeder · 09-07-15, 04:28 PM

OMG oh noes!!!!

Even the gliders I flew could maintain altitude without fuel if I found thermal lift. If that plane can't even outperform a glider then Boeing should go building toy planes!

At least the expert found it out in time to warn everybody about it. Just scandalous!

NeonSamurai · 09-07-15, 06:53 PM

I see CNN's excellence in journalism continues unabated.

Admiral Halsey · 09-07-15, 08:00 PM

Ok the way its worded is funny but what i'm guessing they're trying to say is if a 777 runs out of fuel it'll struggle to glide as well as other planes would so there'd be a higher chance of hitting the ground before making it to an airport.

Oberon · 09-07-15, 09:05 PM

Could say that for most* modern aircraft, without fly-by-wire they take on all the control aspects of a breezeblock.

*most is underlined and in italics because I'm aware there are exceptions to this rule, such as the A10.

Admiral Halsey · 09-07-15, 09:28 PM

Quote:

Originally Posted by Oberon

Could say that for most* modern aircraft, without fly-by-wire they take on all the control aspects of a breezeblock.

*most is underlined and in italics because I'm aware there are exceptions to this rule, such as the A10.

True but what i'm guessing they're trying to say is the 777 would be worse then normal.

Aktungbby · 09-07-15, 10:08 PM

Quote:

Originally Posted by Herr-Berbunch

Please people, stay safe if you're travelling on a 777 soon - they have difficulty staying airborne with no fuel!

CNN's aviation experts don't say if this affects any other aircraft, Boeing or otherwise. Phew.

No more than any other airliner. Actually I found the 17:1 glide ratio of the 747 by googling. I couldn't find anything for the 777, but in general, jet wings are designed in such a way that the glide ratios for these aircraft are broadly the same. A clean 727-200 has a glide ratio of 15-17:1. A clean MD-80 has a glide ratio of 28:1. A clean 747-200 has a glide ratio of 17:1 as well. The glide ratio of 17:1 means that for every 17 units the aircraft travels forward, it loses 1 unit of height. So if it's cruising at 40,000', it will travel (40000 feet x 17 feet = 680,000 feet) = 111.914 nautical miles using google convert. So that gives us a longest possible glide from 40,000 feet. In practice, these glides are actually worse because pilots are busy, stressed, and are initially guessing at glide speeds and angles. I know the glide ratio for the Cessna 172 I fly is 9:1; which is for every 1,000 feet of altitude I will cover about 9,000 feet which is 1.7 miles. Let's say a 737 has a glide ratio of almost double 9:1 like 17:1, if it's 10,000 feet in the air and 32 miles away from LAX, it will actually glide right onto a runway, Having practiced nighttime dead stick- no electronics landings at San Jose(Norm Mineta Int'l Airport) myself, in my 'wild youth' with a miserable 9:1 glide ratio, The superior handling of a 777 at 17:1 really makes the concern a non-issue IMHO. GOLDENRIVET is the better go-to on this sort of thing IMHO but I'm not far off the mark.

NeonSamurai · 09-07-15, 11:00 PM

I wonder if Wolf Blitzer had anything to do with the report. He was always infamous for being CNN's know-it-all on just about everything, and getting absolutely nothing right (seriously just about every other word that came out of his mouth was utter nonsense). Never understood how that idiot managed to get promoted on top of it.

Either way, I'm not at all surprised that CNN goofed again, its like their main talent or something

CCIP · 09-07-15, 11:46 PM

By the way, that report was from late March 2014 so it's not a recent goof!

Gargamel · 09-08-15, 01:39 AM

https://en.wikipedia.org/wiki/Gimli_Glider

Or better yet: (NSFW! or kids! or most people actually, it's Kevin Smith just rambling) http://www.smodcast.com/episodes/true-tales-of-canadian-heroism/
Story starts at about the 13:00 mark

Betonov · 09-08-15, 01:44 AM

Isn't 777 the one with the huge for it's size engines. That might explain since they'd present a very large drag on it.

NeonSamurai · 09-08-15, 02:56 AM

Quote:

Originally Posted by Gargamel

https://en.wikipedia.org/wiki/Gimli_Glider

Or better yet: (NSFW! or kids! or most people actually, it's Kevin Smith just rambling) http://www.smodcast.com/episodes/true-tales-of-canadian-heroism/
Story starts at about the 13:00 mark

My parents knew the captain of that flight, he was one of our neighbors when I was a little kid.

09-07-15, 04:09 PM	#1
Herr-Berbunch Kaiser Bill's batman Join Date: May 2010 Location: AN72 Posts: 13,203 Downloads: 76 Uploads: 0	Why nobody should ever fly on a 777 Please people, stay safe if you're travelling on a 777 soon - they have difficulty staying airborne with no fuel! CNN's aviation experts don't say if this affects any other aircraft, Boeing or otherwise. Phew. __________________

09-07-15, 04:28 PM	#2
Schroeder Navy Seal Join Date: Apr 2008 Location: Banana Republic of Germany Posts: 6,170 Downloads: 62 Uploads: 0	OMG oh noes!!!! Even the gliders I flew could maintain altitude without fuel if I found thermal lift. If that plane can't even outperform a glider then Boeing should go building toy planes! At least the expert found it out in time to warn everybody about it. Just scandalous! __________________ Putting Germ back into Germany.

09-07-15, 06:53 PM	#3
NeonSamurai Ocean Warrior Join Date: Jan 2002 Location: Socialist Republic of Kanadia Posts: 3,044 Downloads: 25 Uploads: 0	I see CNN's excellence in journalism continues unabated. __________________ SH3 Newbie Guide Links and other helpfull stuff

09-07-15, 11:00 PM	#8
NeonSamurai Ocean Warrior Join Date: Jan 2002 Location: Socialist Republic of Kanadia Posts: 3,044 Downloads: 25 Uploads: 0	I wonder if Wolf Blitzer had anything to do with the report. He was always infamous for being CNN's know-it-all on just about everything, and getting absolutely nothing right (seriously just about every other word that came out of his mouth was utter nonsense). Never understood how that idiot managed to get promoted on top of it. Either way, I'm not at all surprised that CNN goofed again, its like their main talent or something __________________ SH3 Newbie Guide Links and other helpfull stuff

09-07-15, 11:46 PM	#9
CCIP Navy Seal Join Date: Apr 2005 Location: Waterloo, Canada Posts: 8,700 Downloads: 29 Uploads: 2	By the way, that report was from late March 2014 so it's not a recent goof! __________________ There are only forty people in the world and five of them are hamburgers. -Don Van Vliet (aka Captain Beefheart)

09-07-15, 08:00 PM	#4
Admiral Halsey Best Admiral in the USN Join Date: Apr 2013 Location: USS Enterprise (CV-6) Posts: 1,740 Downloads: 317 Uploads: 0	Ok the way its worded is funny but what i'm guessing they're trying to say is if a 777 runs out of fuel it'll struggle to glide as well as other planes would so there'd be a higher chance of hitting the ground before making it to an airport.

09-07-15, 09:05 PM	#5
Oberon Lucky Jack Join Date: Jul 2002 Posts: 25,976 Downloads: 61 Uploads: 20	Could say that for most* modern aircraft, without fly-by-wire they take on all the control aspects of a breezeblock. *most is underlined and in italics because I'm aware there are exceptions to this rule, such as the A10.

09-08-15, 01:39 AM	#10
Gargamel Lucky Sailor Join Date: Oct 2010 Location: Rome Posts: 4,273 Downloads: 81 Uploads: 0	https://en.wikipedia.org/wiki/Gimli_Glider Or better yet: (NSFW! or kids! or most people actually, it's Kevin Smith just rambling) http://www.smodcast.com/episodes/true-tales-of-canadian-heroism/ Story starts at about the 13:00 mark __________________ Luck is a residue of Design.

09-08-15, 01:44 AM	#11
Betonov Navy Seal Join Date: May 2009 Location: Slovenia Posts: 8,647 Downloads: 26 Uploads: 0	Isn't 777 the one with the huge for it's size engines. That might explain since they'd present a very large drag on it.