US Air Force Selects Boeing 747-8 To Replace Air Force One 293
Tyketto writes Following up on a previous story about its replacement, the US Air Force has selected the Boeing 747-8 to replace the aging Presidential fleet of two VC-25s, which are converted B747-200s. With the only other suitable aircraft being the Airbus A380, the USAF cited Boeing's 50-year history of building presidential aircraft as their reason to skip competition and opt directly for the aircraft, which due to dwindling sales and prospects, may be the last 747s to be produced.
track record (Score:5, Interesting)
which due to dwindling sales and prospects, may be the last 747s to be produced.
the 747 has been around forever, with many upgrades over that time. it has a proven track record. Now, generally im against no bid contracts, but this one makes sense.
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And yes, because america, I think the president should rock american made transportation, and if the 747 is the only american made option, so be it
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Better yet, why don't we scrap Air Force One and pay Russia for POTUS to take flights on its Ilyushin Il-96-300PU.
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Well I am surprised we don't have someone complaining and saying we should just by POTUS a bicycle yet.
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Well I am surprised we don't have someone complaining and saying we should just by POTUS a bicycle yet.
Specifically [wordpress.com].....
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Great quote. :) Offtopic follows.
As much as I loved Joshua Malina, Rob Lowe was fantastic as Sam Seaborn.
This was probably due to Sorkin and Schlamme checking out for season 5 though. Malina could have had better dialog if Sorkin had written any of it...
Re:track record (Score:5, Insightful)
This is approximately the same arrangement "our" astronauts use at the moment.
Boeing makes a lot of passenger planes, and the US has really expensive new fighter jets, but apart from that the US aerospace establishment is kinda earning a C+ at the moment. The US doesn't make any of the current highest/fastest/heaviest aircraft, our military procurement system is completely sclerotic and over-managed, the best thing we have going for us is a PayPal billionaire who's building rockets effectively as a hobby...
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The AC is sarcastic, but I'd point out that Elon Musk is a South African who got most of his education in Canada. As a matter of fact, of the five founders of PayPal listed on the Wiki page, only one of them is from the US...
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It would be a bit cheaper to just reconfigure and re-paint a few existing USAF C-5 Galaxies, no? It would have the bonus of having more interior room, yet able to land on the same runways as the existing 747.
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I wondered that, too.
In any case, Boeing saw no business case for larger planes, while tons of room for smaller, direct jets. More to more airports with less hub crap.
The Airbus decision flabbergasted them. Officially, anyway. Cynics realized it was some European Union pride/multistate boondoggle as pieces were mandated to be made in most countries. Business case is irrelevant to politicians in such a situation. See also perennial money-loser SST.
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The Galaxy is utterly different than a passenger plane like the 747.
Significantly slower, worse safety record, horribly worse range (you don't want to be in-flight refueling every 2500 miles), and in no way adapted to a 2-level, passenger focused layout they obviously want in "Air Force One". Not to mention the last C-5 was built in 1989. They just don't want to recondition a 25 year old plane as the flagship aircaft of the United States...
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Also, Airbus refused to submit a proposal for this when approached several years ago (while there was no bidding process, basic proposals were requested from both Airbus and Boeing) because they knew it was a no contest decision.
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Also, Airbus refused to submit a proposal for this when approached several years ago (while there was no bidding process, basic proposals were requested from both Airbus and Boeing) because they knew it was a no contest decision.
Does the contest have to come from Airbus though? The last big scandal for the KC-135 tanker replacement came from Northrup Grumman, who wanted to buy Airbus jets and refit them for for aerial refueling here in the US.
http://en.wikipedia.org/wiki/K... [wikipedia.org]
Of course, that was a much larger project with more money at stake.
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Fully aware of the KC-X contest, NG was the prime contractor but it was actually Airbus that did all the work.
The KC-X contest was only ran because Boeing got caught firstly trying to lease replacement tankers to the USAF at a rate which was several times more than they cost to buy, and then Boeing got caught in the first round buying the Airbus bid details from the US DOD procurement officer in charge of the bids.
Even with a US prime contractor and a US assembly line, there was massive uproar over the fact that Airbus had won the second round of bidding, before it got out back out to tender and Boeing magically found a way to make the 767 offering several billion dollars less than their previous bid...
There is no way the US political arena would accept a non-American plane as AF1. Which raises an interesting problem when the next replacement comes round...
Re:track record (Score:4, Interesting)
747 is the only american made option, so be it
Airbus, oddly enough, would be another "American" option - maybe even more American than Boeing.
When the US was looking at replacing it current generation of aerial refueling aircraft, Airbus' bid was more American based on "value". Both companies subcontract much of the work and not all of the subcontractor are in America or Europe. (I don't think the Mobile Alabama can produce the 380, but you never know what type of modifications they would make to win the contract.)
If we Americans want to be the "best" and on the cutting edge we can rest on our laurels and hid behind "Buy American". Let the Europeans come and I will be happy – as long as we can bid on their president's plan. (or prime misters, or whatever)
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The issue is that the 3 planes being ordered would have to be built in the US, and it would not be cost-effective to build only 3 A380s in the US.
dom
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I kind of wonder why my own country went for totally unproven foreign F35 JSFs (yay budget overruns), then decided to get totally proven "domestic" NH90 helos. Proven to be crappy rustbuckets.
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As a European, I agree. To the military I say: buy the best on the market, with a proven track record, with a slight bias for buying local.
Slight? It has to be either local, maintainable local, spare-parts generally available or from an ally so close that if you ever break up you are pretty much fucked anyway.
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The Soviet Union adopted with the AK-74 in 1974
He was speaking about AK-74M, which was adopted in early 1990s.
But anyway, even if you look at AK-74, it was already in many ways outdated back when it was introduced. Only two locking lugs, and not in a barrel extension, craptastic safety, slow iron sights, a large open gap in the receiver when bolt is closed permitting dust and dirt in, very inconvenient optics quick mount on the side rail (on AK-74M with its folding stock, if you use the rail, you can't fold the stock - WTF?) etc. Also pretty heavy in its basic configuration, and even heavier with optics because of that aforementioned side rail necessitating heavy mounts.
A good example of a modern AK-derived design is SIG SG 550. Same basic action, but it uses modern layout, modern ergonomics, and is much more accurate and flexible while being every bit as reliable.
and most Eastern European and former Soviet Republics use it today.
Most Soviet republics - true, but which of them are "allies"?
Most Eastern European states - not really true anymore, and wasn't really true even when USSR was still there. The only two I can think of that still use AK chambered in 5.45 round are Bulgaria and Romania (and for Romania it's not AK-74, but their own independently developed variant), and both are looking at options to migrate to, generally in 5.56 for NATO conformance. Poland uses the 5.56 Beryl, also not derived from AK-74, and significantly improved compared to the latter. All ex-Yugoslavian states either still use the original AK chambered in 7.62, or else have migrated to something in 5.56 (e.g. FN F2000 for Slovenia or VHS in Croatia). Czechs and Slovaks have both used their indigenous Vz.58 until recently, and are now switching to CZ-805. Hungarians use their own FEG AK variant, also in 7.62. Albanians use the original AKM. Did I forget anyone?
The only nation states I know of that still use the old AK-47 are in the Middle East, Africa, and Southeast Asia (including, I think, India). The big advantage of the AK-47 is that it is cheap enough to hand out like candy to guerrilla fighters, and it's reliable enough to still work after years of little to no maintenance (though it's effectiveness drops quite a lot when doing so).
Well, you kinda lump them together - it's not like there are a few nations in Middle East or Africa, and a great many of them use AK. But, as noted, in Europe, you're looking at least at Serbia, Montenegro, Bosnia, Albania and Hungary. And if you look at who else uses AK-derived guns chambered in 7.62x39, you'll have to also add Czech Republic and Slovakia (tho not for long) and Finland.
FWIW, I don't see the point of differentiation. AK-74 is only marginally different from AKM in matters other than caliber (and muzzle brake, but that can be easily retrofitted). All ergos are the same, reliability is the same, and all deficiencies are also the same.
In any case, I don't see why anyone in a sane mind would adopt AK-74M as a new service rifle in 2015. There are far better options available for anyone not sorely short on cash and not running a guerrilla army.
I mean, sure, you could take AK-74 and modernize it - make the receiver cover non-detachable so that a rail can be put on top, replace handguards with rails or something else allowing different mounts, replace leaf sight with a peep, replace the safety with a switch that can be manipulated by a thumb, replace the stock with folding and length-adjustable one that also has a cheek riser for better weld.
Russians did just that in their own modernization program, and the result is now known as AK-12 and is undergoing trials. Though it has a bunch of other changes (like lightened bolt) that are suspect wrt reliability, especially given the results of the trials so far.
But then again, unless you're short on cash, you could just get SG 551, which was designed with all those things in mind from ground up.
Re: track record (Score:2, Informative)
Correct, but the 4-engine requirement is actually for power and survivability.
It really has nothing to do with all the other reasons, in this situation.
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yes but a 4-engine plan can land on just 2 engines [wikipedia.com]. that's one less engine.
Re: track record (Score:5, Funny)
A four engine plane will land on no engines.
Re: track record (Score:4, Insightful)
A four engine plane will land on no engines.
Yes it will, but the more engines you have still running, the more options you have about exactly WHERE you land.
Re: track record (Score:5, Funny)
"All the way to the crash site."
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your head of state needs safety and redundancy, not fuel economy
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A British Airways jumbo jet lost power in an engine on takeoff from Los Angeles International Airport last month, but the pilot elected not to make an emergency landing for repairs, deciding instead to continue the 5,400-mile, transatlantic flight to London on the remaining three engines, officials said Monday.
Because of unfavorable winds and inefficiencies resulting from the engine loss, the Boeing 747-400 burned more fuel than anticipated, and the pilot was forced to cut the nonstop flight short and land in Manchester, England, the airline said.
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Takeoff is the absolute worst time for an engine failure.
They still made it from LAX to Manchester with a failed engine. That's pretty impressive.
A dual-engine aircraft would not have fared nearly as well. The best expected outcome would be an emergency landing at the nearest airport.
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The reason they landed at Manchester was not because they burned more fuel, but it was because they thought that the fuel on the outer wing tank on the wing that had the shut down engine on was inaccessible - this turned out to be false, they could have made it all the way to LHR without issue.
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A 767 once landed safely with 0 of 2 engines [wikipedia.org].
As for takeoff, the weight limits are set so that the aircraft is capable of climbing at an adequate gradient...with one engine inoperative. [wikipedia.org]
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true, but with a 4 engine plane, if 1 fails, you are still good, if 2 fail, chances are you are still good. Ive even heard of 3 engines going down and a plane landing safely with 1 of 3 engines.
So true. if 3 engines fail on a 2 engine plane, it pretty much destroys everything and resets the universe. a 4 engine plane is just the sane choice.
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If the two-engine planes are such a risk, how the hell have they got air safety certificates?
Unless, due to scheduling issues they intentionally want to run the plane with broken engines, I don't see any good reason why it needs four engines.
Fair enough, buy American - especially when the A380 is more expensive. But given that it is a completely custom fit out, I don't see why the smaller size of a 787 should be a problem either.
The 787 would make it practical / possible to fly into smaller airfields too. A
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The 787 would make it practical / possible to fly into smaller airfields too. And be much, much cheaper - to purchase and run.
If you would eat your caviar and drink your Crystal on a smaller, cheaper plane, then you clearly lack what it takes to be president. Or in the senate.
Re:track record (Score:5, Interesting)
Because the certification for twin-engine planes only looks at engine reliability and environmental factors like rain and hail. It doesn't consider being shot at with missiles and small arms fire, which is a required safety criteria for Air Force One.
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Two and three engine planes are quite safe, but I suppose the President's plane is more likely to be the subject of hostile action that could take out one or more engines. Also I would think that the Secret Service would not want the President's plane to have to land suddenly at an unexpected emergency airport, which is generally OK for everyone else.
Re:track record (Score:5, Funny)
Etops:
Engines
Turn
Or
Passengers
Swim
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Thanks for the perfect setup for this old joke...
On a four-engine plane over the Atlantic the pilot announces on the intercom, "Ladies and gentlemen, we've just lost an engine, but there's nothing to worry about. This plane flies perfectly well on three engines. It just reduces you speed a little so we'll be about a half-hour late."
A few minutes later, another announcement: "Ladies and gentlemen, we've lost another engine. We'll still make it, but that'll slow us down a little more. We'll be about an hour l
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I hear a presidential limo made from a Chevy Bolt, with an electric engine and no armor, is much more fuel efficient, too.
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That entirely depends on the use you have for the aircraft - high oil price or not, no aircraft has the CASM of the A380 (not even the proposed 777X), which puts it in a league of its own. Consequently, the 747-8 falls foul to the 777 so the sole VLA competitor to the A380 would be killed by its own sibling...
Oil can go through the roof, but if you can fill an A380 then thats the aircraft you need for the job. You can't shoehorn 600 into a 777 no matter how hard you try.
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You can't shoehorn 600 into a 777 no matter how hard you try.
Not to diminish your point (you were probablly talking about legality rather than feasability) but I expect you probablly could get over 600 passengers on a 777 if you were prepared to throw the safety rules out the window. el-al once put over a thousand people on a 747 http://www.guinnessworldrecord... [guinnessworldrecords.com] . If we assume a similar ration of "maximum legal passenger capacity" to "maximum possible passenger capacity" then you should be able to stuff about 742 passengers on a 777.
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You can't shoehorn 600 into a 777 no matter how hard you try.
Yes you can, you just can't get them out again in the same shape/form they went in.
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Why does it make sense? Because America? Even with this token gesture, it will likely be the last Boeing plane used for the president's fleet.
No. It means they will be the last 747's in the president's fleet. Boeing isn't going out of business. They are just winding up construction of 747's. The next time around, they will have to choose a different airframe. But it may still be made a Boeing.
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Apparently because of safety considerations, they really want a four-engine plane. But those are getting scarce on the ground. Jet engines are getting big and reliable enough that even the largest jets made these days have only two engines.
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An airplane flying over the Atlantic lost one of its four engines, and the pilot came on to reassure the passengers. “Nothing to fear,” he said, “we’ll just be half an hour late arriving in New York.” A while later, another engine was lost. “Nothing to fear,” said the pilot again, “we’ll be an hour late now but we’re still safe.” Later, a third engine went out, and the pilot informed the passengers that arrival time would now be two hours late. One of the passengers turned to his seatmate and said, “If that last engine goes, we’ll be up here forever!”
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Well, with 2^2 as many parts on a 4 vs a 2 engine airplane, more failures make sense.
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Number of failures does not matter near as much as number of catastrophic faliures. If 'number of failures' was all that mattered nobody would ever use redundancy.
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2^2? Are you sure you don't mean 2? Math challenged?
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Never been inside an airplane, have you.
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Your math fails. How can a 4-engine aircraft have 2^2 = 4 times as many (engine) parts as a comparable 2-engine aircraft? It would only have 2 times as many.
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LOL. You're funny.
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Jet engines are getting big and reliable enough that even the largest jets made these days have only two engines.
The largest commercial jets made these days are the 747 and the A380 - and both have four engines.
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the Antonov 225 has six engines. OK, there was only ever one built. BUT, its immediate predecessor, the AN-124, is a commercially available, fully configurable airlifter/cargo/passenger airframe, which remains the largest of its type in the world. 25% greater carrying capacity than the Lockheed C5 Galaxy.
Ukrainian, for the win.
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Or a MCC-197 surface to air missile...
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They are not even close to stopping production of the 747. With the new 747-8 she has more then a decade of production left in her. Who knows, they may even do a -900 model in ten years.
Re:track record (Score:5, Insightful)
"Because America" is a legitimate requirement for a Presidential aircraft. The President and what he uses is a powerful statement about the strength of US industry. That's why Queen Elizabeth II has a Bentley, and the French President is driven around in a Peugeot or a Citroën.
It is legitimate for politicians to have political reasoning behind the selection of their conveyances. I'd be surprised that they'd even consider Airbus for AF1, even if it was cheaper or slightly better.
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"Because America" is a legitimate requirement for a Presidential aircraft. The President and what he uses is a powerful statement about the strength of US industry. That's why Queen Elizabeth II has a Bentley, and the French President is driven around in a Peugeot or a Citroën.
That makes sense though Bentley and all other UK cars are no longer UK (now owned by companies from other countries). Boeing is a US company but I was talking with someone who was familiar with the USAF tanker selection and competition. He said if a tanker from EADS will provide more US jobs because much of what Boeing has been off shored (though some of this may have reversed after 787 debacles).
Re:track record (Score:5, Informative)
the Bentley Jubilee 2002 was built and furnished entirely in England. The engine is a Rolls Royce TT 6.75l V8 purpose-built in Derby. Coachwork and chassis assembled by hand in Crewe, and the furniture by Hield in West Yorkshire. It might be *owned* by Volkswagen but the manufacturing is entirely still British labour.
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and all other UK cars are no longer UK
That's a slight overstatement. Whilst we focus on the niche end of car production, the following companies, inter alia, are still UK-owned and doing quite nicely:
Noble
Westfield
Caterham
(Bristol - not doing so well...)
Morgan
Ultima
McLaren
Ginetta
Caparo (really very niche)
Lightning
Not sure old Queeny would want to be driven in any of those, though. Her Majesty's R620 (http://uk.caterhamcars.com/cars/seven-620-r) would certainly make for rapid meet-the-peoples.
The UK also pro
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having a look around, it seems that a lot of the Government fleets (Estonia and Argentina to name two) are comprised primarily of Audi A8s.
Re:No it isn't (Score:5, Insightful)
I don't think any other country is unduly concerned about us not opening up bids on a project like AF1. It's one or two planes. The symbolic value of the plane is significant, and honestly, isn't really what is beggaring the country.
No foreign corporation is going to seriously complain that they didn't get to build the one plane for the head of state for another country over a local builder.
The symbolic requirement isn't good enough to force the rest of the government to buy all Boeing, but unless the 747-8 was a complete pile of shit or twice the price of the comparable Airbus model, that one plane is not really a big deal.
Re: track record (Score:2)
I think everyone's ignoring an important point. The aviation industry is extremely intolerant of accidents; especially due to manufacturing and design defects. This is a good thing for the presidents safety. The president doesn't give a crapy about fuel economy or the latest carbon fiber designs like the rest of us. They need something with a proven track record of safety.
Plus it's probably easier to add to the 747 Missle defense and reuse the radiation hardened avionics
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Plus it's probably easier to add to the 747 Missle defense and reuse the radiation hardened avionics
Yes to the first, no to the second. The 747-8 uses the 787 avionics suite which is an all digital setup, almost nothing is common between the old 747 and the 7474-8 from that perspective.
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and the rest - the 747 has been flying commercially since 1970. That's 45 years, easily the longest continuous run of any aircraft model anywhere ever. And I swear some of the first airframes are still in service.
Last 2 planes? (Score:3)
Re:Last 2 planes? (Score:5, Informative)
As for why the 747 could be discontinued, at least for awhile; there's an upper limit on the number of superjumbos needed on the planet, and I expect that we're probably not far from that point. So long as the current fleet continues to operate safely then there's simply no need to produce more planes. As the current fleet wears though, eventually new replacements will be needed for those routes where moving this many passengers makes sense, especially if the manufacturers can get the efficiency up. That's part of what's eating into the superjumbos; the ability for multiple flights a day with smaller planes to get equal fuel economy per passenger and at the same time offer more flexibility (ie more than one flight per day) due to the use of smaller planes.
My wife used to fly fifteen times a year. There was one city that she flew to the most, and she chose the airline with the most daily flights because airlines will often move one up to an earlier flight or two that same day if there's empty space, because they can sell the seats on the later flights to last-minute purchasers. She could come home four or eight hours early if she was done early and didn't need to be there anymore. An airline flying two or three 777s or A320s per day offers her more flexibility than one flying one 747 or one A380, and that's worth something.
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Apparently, the 747 lost its market-share to twin-jets such as the 777 and the Airbus 320 when the smaller jets were able to fly just as far as the 747. There are international standards on how far you can be from a landing strip based on the presumed flight time of your engines. The 747 has four engines, which was, for a while, necessary to maintain that rating. However, better technology allowed smaller twinjets to have similarly high ratings.
I agree, however, that the 747 will be around for a super long
Re:Last 2 planes? (Score:5, Funny)
Planes last pretty much forever if you want them to. I'm part owner of a 1957 DeHavilland DHC-1 Beaver. It's only three years newer than I am. It's much easier to buy replacement parts for the it than me.
caveat (Score:3, Informative)
Your Beaver is NOT pressurized. Airliners have airframes whose service lives are based in part on the number of pressurizations/depressurizations. Every time the airliner ascends it inflates a bit like a balloon and when it descends it contracts again, and each of these cycles not only stresses the Aluminum skin generally but it specifically stresses any area around a hole (like around rivet holes and large holes like doors and windows).
This is why a B-25, for example, can be kept flying forever but a press
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Well, sure. Otherwise the money will go to someone who doesn't make campaign contributions...er, that is, isn't American!
Re:Last 2 planes? (Score:5, Informative)
There will be hundreds of 747s flying for the next three to four decades, so parts are not an issue - Boeing makes the majority of its money on aftermarket care and parts, they won't close those lines down fast.
Re:Last 2 planes? (Score:5, Informative)
So...$1.65 billion to buy the planes from Boeing, and how many millions per year to have Boeing keep a tooling line up for spare parts?
Since airlines were still ordering new 747-8s (the platform on which the new Air Force One(s) would be built) in 2014 - and might still continue to do so - this isn't exactly an obsolete aircraft. I mean, the first 747-8s weren't delivered to customers until 2011. There are still-flying 747-variant fuselages in commercial (passenger and freight) service that have been in the air since the late 1970s and early 1980s. Based on that history, it seems likely that Boeing will need to support its commercial customers through to at least 2045 or so.
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the only difference between the 8 and the other 747 series is the 8 is 19 feet longer. Hell, they're being built on the same plant floor that the first -100 was built on. There is no special retooling required.
Not going to disappear quickly.... (Score:5, Interesting)
Even if Boeing stopped building 747 variants tomorrow, they'd be around for ages. They're the mainstay for long-haul travel, and dwindling sales probably are more related to market saturation - as in, there are enough in the air now to meet current demand - than any inherent shortcoming in the design.
I suspect that there are more refinements to come - it's just too useful an airframe to discard. It may take Boeing a bit to roll in some of the working dreamliner tech but it seems reasonable that they'd try to do that when time and demand permit.
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The 747-8 has new engines, a new wing definition and loft, new winglets, new avionics and significant aerodynamic improvements across the board. The only thing left to do is switch construction to CFRP or another modern material, and its cheaper to do an all new aircraft for that as you have to redesign the framework completely for the new material loading. The -8 will be the last 747.
Plus, while iconic, the 747 carries a lot of unnecessary weight around due to its short upper deck (there is a lot of wasted
Re:Not going to disappear quickly.... (Score:5, Informative)
Based on Wikipedia, the freighter variant of the 747-8 is unexpectedly popular. The 747 already dominates the civilian air freighter market so it's a good bet the 747-8 will be around for a very long time, if only due to the numerous freighter versions being operated around the world.
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Outside of Lufthansa (which bought the 747-800) pretty much every other passenger airline has planes on the book to get rid of their 747s. I would expect by 2020-2022 you'll see them confined to cargo use and third world airlines.
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Well that's good for the presidential budget - plenty of cheap spare 747 parts for decades!
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Looking at Wikipedia, Korean Air, Arik Air, Air China and Transaero have also ordered the 747-8 along with sales of 9 aircraft to what Boeing labels "business jet/VIP" (i.e. sales to entities that aren't airlines). Order numbers for the passenger variant aren't that far behind the numbers for the freight variant.
The older 747s are going away because they are inefficient and expensive to run and maintain. But the -8 contains technology from their latest aircraft like the 787 and the 737-9 to make it more fue
Re:Not going to disappear quickly.... (Score:4, Interesting)
Old 747s have terrible fuel economy which is their highest operating cost, plus they have to be completely torn down (seats out, overhead bins out) for a complete airframe inspection, engines rebuilt etc every 6 years or so and it costs millions of dollars to do this "frame off restoration" with qualified FAA certified mechanics. After the fourth or so complete restoration the cost-benefit ratio slips in favor of buying a whole new airplane. This isn't like buying a pickup truck for personal use which you can just drive until the wheels fall off, swap in a new rear axle and drive it another 500,000 miles without ever doing a proper inspection of the frame, wheel bearings, etc.
In addition to the major overhauls, they do slightly less major overhauls every 4 years, and they still do a full 2 day inspection every 18 months or so.
Eventually these old 747s get sold for a song because the maintenance to keep them flying isn't worth it. There's a 747 in the background at the Top Gear test track (which is a converted airfield) that is parked most of the time or used as a prop for movies but is still airworthy when someone needs an extra cargo jet, or needs to fly a football team to Australia or something for top dollar. But they're not economical for daily use by major commercial airliners anymore.
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The 747-400 is rapidly disappearing from the long haul passenger travel market. The A380 is being used on some high demand routes and on the longest flights (the current world's longest nonstop flight is Dallas-Sydney, operated by a Qantas A380). Virtually everything else is going to twins, with the 777-300ER proving particularly popular by providing near 747 capacity and range on two engines.
Re:Not going to disappear quickly.... (Score:4, Interesting)
An individual airframe is typically retired before 100,000 pressurization cycles. This is a limitation of the aluminum used to make the skin, which unlike other ferrous metals does not have a fatigue limit [wikipedia.org]. In other words, aluminum always grows weaker with use. As you get closer to 100,000 cycles, you increase the odds of a catastrophic fatigue failure [wikipedia.org] where the aluminum literally unzips like plastic shrinkwrap after you've cut a notch in it. (Aloha 243 had nearly 90,000 cycles due to its short-duration island-hopping history.)
The 747 is typically used on long-haul overseas flights lasting 10+ hours. This drastically reduces the rate at which airlines can rack up pressurization cycles. Even if one were flown 2x a day every day, it would take over 130 years to reach 100,000 cycles. By comparison, a 737 used for the 40-minute LAX to Las Vegas route may fly 10x a day and reach 100,000 cycles in a little over 25 years. This is why 747s are hanging around - their skins simply have less wear and tear on them despite being in service for more years and logging more flight hours than other planes.
The 747-8 was always a bit dodgy. When Boeing made the original 747, they weren't planning to make it with a partial second deck. It was supposed to be a stepping stone to future models with a full second deck (designing the 747 nearly bankrupted the company). Boeing pitched the full two-decker model to the airlines for decades but could never get enough interest to justify actually building it. Then Airbus came with its "who cares if we'll sell enough to make money, our governments will pay for it if it doesn't so let's build it" A380, and Boeing threw together the 747-8 as a possible alternative.
The slow rate of A380 sales (nearly 10 years old, 318 orders, 147 deliveries) seems to substantiate Boeing's marketing research that there just wasn't sufficient demand (yet) for such a large plane. By comparison, the 747-400 had 465 deliveries in its first 10 years. The 747-8 has 119 orders, 83 deliveries in the same timeframe as the A380. As you state, in the 400-525 passenger category, the market is pretty well-saturated by older 747s which are still airworthy.
In terms of airline operating economics, the number of passenger per flight nearly always has a larger magnitude of effect than efficiency gains for new technology. For an airline you are almost always nearly best-off flying a plane with slightly more capacity than the number of passengers. Airbus tried to claim the A380 would be so efficient this wouldn't matter, and you could fly a 747-sized number of passengers on a A380 for cheaper than a 747. I was very skeptical, and the fact that airlines aren't tripping over themselves to replace their old 747s with A380s is a pretty good indication that it's still cheaper to fly a 747 for 747-sized passenger capacities.
The next place to watch is to see if Airbus will roll out a twin-engine competitor to the 777 (maybe a longer A350-1000?). Airbus' competitor to the 777 had been the A340 (both are in the 300-450 passenger range). But the A340 is a 4-engine plane which uses much more fuel. Consequently, the 777 beat the A340 into a bloody pulp in the market. The 777 has had 1827 orders in 20 years, vs 379 orders
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And, 2 engines are actually more reliable than 4 - less that can go wrong.
Right, which is why nobody would ever buy a server with 2 power supplies when 1 will do. Nobody would ever build a cluster of low power systems rather than using a single high power machine, etc.
Re:777 (Score:4)
And, 2 engines are actually more reliable than 4 - less that can go wrong.
No.
Let p be the probability of one engine failing during a typical flight. We can assume p is a very small number, because the engines are designed and maintained well.
The probability of both engines failing on a 2-engine aircraft is p^2, an even smaller number. The probability of all 4 engines failing on a 4-engine aircraft is p^4, a number that is even smaller still than p^2. So, having 4 engines instead of 2 reduces the probability of all engines failing, and makes the plane more reliable.
Convert an existing B-52 (Score:2)
After all, they are expected to be flying for *another* 50 years....
non-surprise (Score:2)
Was anyone really expecting anything else? They certainly wouldn't ever have considered Airbus, the GOP and the public would have slaughtered whomever made the decision to buy non-American, regardless of the benefits the alternatives might have had. That plane is as much an ambassador for the US, as the passengers flying on it.
Why not a C17 (Score:3)
Why not convert a C17 - its more manoueverable, and can use smaller airfields
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Has the Cold War really ramped back up to the point where that system needs a replacement?
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Re: Big Surprise (Score:4)
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Right, because in the 46 or so years he was alive and not president, he probably never flew coach.
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And if there's a national security emergency, does everyone without clearance just have to step outside while he takes the call?
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Cone of Silence?
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And when America is under attack by Martians, the nation is unable to defend itself because the entire Executive Branch was destroyed while waiting for a flight at Dulles International Airport.
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The Airbus A-380 is about 20% less costly than the 747-8. They're wasting taxpayer money as usual.
So you think that flight time costs have much all to do with the total bill for shuttling the president of the United States around?
You need to get out more often.
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The Airbus A-380 is about 20% less costly than the 747-8. They're wasting taxpayer money as usual.
Since the 747-8 is closely related to the older model 747s that they modified for the current AF1 fleet it should but much easier and less costly to make the modifications for the new ones. Modifications for the A-380 would be completely new designs.