SCRAPPED - The Unreleased Boeing 747s
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- Опубликовано: 24 мар 2024
- During the latter stages of the 1900s, Boeing studied several conceptual designs to advance its 747 programs. This included a trijet configuration, extended-range aircraft, and a quieter variant, amongst other changes. Was there a common theme as to why Boeing never went on to develop these more advanced and obscure types?
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You forget that ETOPS operations were being devised at the same time, this meant that for certain operations the aircraft had to survive losing half it's power and continue to an alternate airport.
It was simpler and cheaper for Boeing to support stricter ETOPS, rather than build a trijet. It was also a strategy to destroy Lockheed L1011 and MD DC-10, and then aquire them through merger.
The Trijet 747 had always been a fake proposal, that, no one at the time took seriously.
I travelled several times in a 747 at the beginning of the 80’s. One of them was a 747-100 from the famous company Panam.
NASA originally requested the 747SP turned into SOFIA be upgraded with the wings and engines from the 747-8. This would have provided a cruise altitude above 50,000 feet for the 747 Airborne Telescope!
That plane you mentioned was a former Pan American aircraft.
The 747 trijet would have made an interesting case right now. Designed with the capacity of the 747-8, it probably would sell quite well, even now.
But will engine development catch up with it too? 115,000 lbs is already possible.
The 747 SP was underrated and under used
for what reason, airlines want planes with high capacity that are fuel efficient, shortening a plane but keeping the same engines hurts efficiency no matter how much you fine tune the engines
Of all the variations of the 747 you’d shown in this video, it’d be interesting to see if Boeing could pull off the Tri-jet or even a twin jet 747…..
I remember a moment in my childhood when sitting in our backyard with my dad to see a 747 fly straight at us then appear to hang motionless in the sky before making a 90 degree turn then fly to the big international airport not far from us.
Talk about an amazing moment.
I liked the 747 100 and 200's. The 100's had twin lights on the tail . The 200's only came with 1. But both had a spiral stair case which led to the upper deck that looked really cool.
With the stupendous amounts of thrust that some engine makers are either achieving or aiming for, I do have to wonder if a 747 twin might be possible...?
Considering they have used the wing design on the 747-8 from the newer twin jet designs of the 777 or the 787, the aircraft could possibly fly with the new Rolls Royce Trent 1000 engines or the GE NEXGEN engines. The issue is the cost of certification, while Boeing could build the aircraft the certification process would drain what little money they have left. As of March 2024 they are in a major crisis with safety issues, their CEO resigning among other issues so certification would probably bankrupt them.
@@Subgunman Based on past performance, I'm sure the US government will shower them with bailout money. It's the right thing for the taxpayers apparently.🤦♂️
@@Subgunman Prove me wrong but I couldn't find a reengining/redesign of a plane yet where they reduced the number of engines, were there any twin-engine 707s (except the 737 which started as a twin-engined, shortened 707; the -900 and MAX 9/10 have almost the same length as a 707-100/-200.
And development of planes like the A330/A340 went parallel, Airbus thought the A340 would sell better but then the ETOPS rules were lifted and the A330 sold better.
I guess it would be also possible to build a quad-engined or even twin-engined B-52 but they now began to adapt the Rolls-Royce BR725/F130 to keep the original four pods with two engines each to replace the ancient JT3Ds.
Seems like it was to much effort because it would have been necessary to redesign the wings and it would have also changed the characteristics significantly.
@@kuchenblechmafiagmbh1381 the A340’s downfall came with the fact that the company who was designing a larger engines for it failed to come through with a working design sot AirBus was relegated to smaller engines which if ran hard to provide the performance the A340 was to have would have meant excessive fuel burn and premature engine wear. Can’t help but think what it’s pilots refer to the A340, the 747’s replacement powered by four hair dryers.
A 747X with 2 engines would be awesome, you know the one with 2 decks.
A truly beautiful flying machine
Nice video, mon!
Priceless flying-machine ever made in. our life time. ❤
Ty dj!!
So amazing
It is and still will be an great xcwiient a'c, got it!!
❤ queen of many hearts.
It’s amazing that the 747 and 737 are still around. They are such old designs. I’m sure there will be a new clean sheet design in 10 years for both aircraft. There will absolutely be demand again in the future for new aircraft the size of the 747 or larger.
Making 777X longer will do the job.
@@composimple364I can imagine much bigger than the 747. There are only so many slots at the biggest airports, always more people flying and pilot shortage. There are a lot of really old aircraft and pilots out there.
"Clean sheet design" LOL. That trope only appears on DJ channels. Lame.
@@tylerduchesneau fuel savings from a bit smaller airplane saves significant fuel cost, so much that it can cover overpaying pilots to keep them in the job. That’s why A321neo sells so well replacing Boeing 757 and 767.
@@tylerduchesneauthe A380 was that aircraft, and there turned out to be too little demand.
Only thing can save Boeing is the 747 ,767,757 bring em back
737Max10 should be 757Max8
Thing?
The SF variant of the 747 was designed for domestic flights in Japan. These planes lacked winglets and had modified landing gear to handle the extra wear and tear caused by frequent landings.
I like to hear more about the 747 trijet if they bring that jet back that’s why I like to see
Not gonna happen…
I think I'd go with the variant that was built to the safety standards of the original 747's.
I never knew that a tri-engine 747 had been built. Together with 747 SP are interesting alternatives
It never was built. It was a dud from the get-go…
Indestructible, no cost cutting.
It’s been a few years since I’ve watched a DJ’s aviation video. Somebody’s T35T135 have dropped 😅
We were fortunate to have lived through the latter part of the quad jet era. BIG twins are here to stay, maybe even two decks, but I don't think there will be any more civilian quads or trijets - they just can't ever reach the efficiency offered by fewer power units...
...as long as development isn't centered on the 737 (also a design over a half century old for a totally different mission than long haul flights) Boeing may have a chance to take back some ground. They had that chance in 2011 when they cancelled what could have been the NMA (the 757 replacement) as focus on international operations was beginning to shift from focusing on big hubs to more direct point to point service. By that time the 757 was certified for such operations with the further easing of ETOPS.
A 757 follow on using the technology of the 787 wold have been a big hit, but "Boeing/McDonnell" decided sales of a new (and flawed) version of the 737 was more important than pushing the envelope like they did in the past..
Flying a lot back in the mid 80s and early 90s i never felt safer in a airplane than sitting in a Boeing 747.
Obviously that was then, how the mighty have fallen, not the plane but the company that built it.
Now isn't it a interesting coincidence that the 747 isn't built anymore? I know it's got nothing to do with the topic of current day Boeing and it's problems, but an era being over that stood for a fundamentally safe plane, that isn't built anymore, and then the planes that are built by the same company today, and the fact that planes coming out of that company are anything but fundamentally safe.
What no mention of the 747 VC-25... 🇺🇸 Aka, Air Force One
Airbus missed the boat with the A380 by not designing in features for cargo conversions. The 747-8 wasn't all that great of a pax aircraft but it it made for a damn good cargo aircraft.
it would be interesting ge test 747 with the big engine could prove the plane can fly with 2 engines and customers who had a 747 and loved would like to buy the jet again if it became a twiner
What happened to the new Air Force 1 747s that seem to have gone over budget and disappeared? 1:24
It did not disappear, it’s being worked on as we speak
E aquele 747-236B montado com dois turbofans em único pod ao estilo B-52 ? É só montagem para um filme ? Seria possivel? Alguém já viu ?
Just for a movie, on a stored example that never ever flew again.
I really don't understand the difference between an upgraded 747 model and a brand new plane. New technology and more efficient engines could be put in any plane, upgrade or new model. In the end it probably boiled down to overall cost.
My fuel free engines will eliminate major fires after impact and slash air transport costs.
Say no to drugs. Your concept speaks of drug abuse.
Hit the ground running does not make a person go faster. The Mythbusters busted that myth.
Imagine if 747 is a twin jet instead 4.
Sounds linke a Boeing advertisment.
All three
Am not wishing more danger on air.
747 full length double-decker
That is known as the 747x. I personally like it
Powered by the incredibles? Riiiigght....
7 47 Trijet
Airbus took the step needed (in hindsight) And produced the double decker Super Jumbo, what Boing should have done maybe? But Boing were working on the 777 which proved a hit.
You realise the 777 was WAYY more popular than the 380
On a strictly 'Units sold' comparison absolutely @MG101. But the King is still swinging punches beyond its used-by-date. I was a sceptic because it wasnt A Boeing & its wing was glued together, imagine that. Airbus took them on at their own game & had a relative win. But 'Boing' have always done well with clean sheet designs. Those big GE90s make up for the two missing engines, stroke of genius everyone would agree.
The A380 didn't sell well for a handful of different little reasons that added up to too much. The Boeing 777 just employed existing concepts that kept being improved little by little and it proved right. The A380 tried to break with many of these concepts, but never got anything done right.
Yeh.....fair enough. Not selling as well as it probably should have. But it broke new ground & was innovative, despite issues. Lufthansa plans to bring back all of its 8 x A380s by end of year.....😎Qantas (my neck of the woods) brought back its 6th A380 late last year, its operating all 6 left currently. There's a prediction of fuel price coming down this year from its highs.
@@flying_chorizo They are doing so because otherwise there is no market for an used A380, so either they scrap them for peanuts or just enjoy a nearly free plane. The per seat-mile operation costs are much higher than a Boeing 777-300ER, so they have to sell more seats on an A380 and still make less money, but at least there is less imobilized capital, since the 777 would cost a lot of money to buy.
I am a huge fan of the L1011, and the B747 and all its variants with the exception of the B747SP. But a hybrid of both the B747 and the L1011 is just plane ugly.
It would have been interesting if the trijet version had made it to market. In an alternative development the design of the 747 main variants, they could then implement a trijet design with three 777 engines. Imagine a 747-8 trijet!
I think the 777x engines could do the 747-8 as is LMAO
@@TemporaryChannelNameClose, but not there (yet).
@jantjarks7946 certainly realistic though
The reason behind not doing so is because the tail structure needs to be too heavy to sustain a high bypass turbo-fan. The MD-11 was such a stretch to the concept that it ended up being less efficient even than the A340.
747-x
Sad sad news
Calhoun quit this morning.......
Wow, I just did a Google, the top three are all going, just wow.
Yeah, it takes 8 months for him to be gone.
@@jantjarks7946 His decision making ability is now gone. He will be there for transition only. My understanding is they already have a temporary replacement. We can only hope it's the fist light at the end of a long ,dark tunnel.
Well, actually it looks more like they can't find someone who could sort out the mess Boeing is in. Those who could are either retired, gone or got axed after the merger.
Rearranging the deck chairs of the Titanic. Full speed ahead!
Yay !!! Dave Calhoun is resigning !!! 🤗
maybee the Tri Jet A380 would might work.
Is it possible/feasible to just shut down 2 out of the 4 engine once at cruising altitude?
of course not. if it has 4 engines its because… it is designed to fly with 4 engines 🫠
engines don’t just provide thrust but powers multiple aircraft’ systems as well.
Yes, then the two left engines will have to turn at 100% to compensate for the switched off engines plus their drag since jet engines cannot be feathered.
The concept was used in a four engine plane, the Hawker Siddeley Trident 3. It had one extra top engine that only turned during take off, but it had only 5klbs thrust compared to the 12klbs thrust of the other three engines and there was a sliding window to reduce drag while the engine was turned off.
@@gteixeira I envisioned one engine on each side would be running
@@tomjanowski8584 Yeah, they would need to turn at nearly 100% to make up for it. You should ideally turn three out of four to have the optimal performance.
In a short answer, NO! You shut down an engine and it becomes a HUGE lump of parasite drag as well as several tonnes of ‘doin nuthin’ weight that requires lift to support it. More lift equals more induced drag. If you want a twin engine jet, build a twin engine jet.
The DC747 And MD747💀 yes, I know what you’re thinking These planes are fake, but these plane It’s real Boeing Made this plane which is called the 747-300X
L-747
Ultimately they settled on the 747-8, which was basically a stretched 747-400neo.
Boeing has always been a pioneer in the widebody sector, and while Airbus had benefitted greatly from Boeing's innovations, Boeing continues to lead the sector even though the delay of the 777x had allowed Airbus to make inroads with the A350-1000.
AI bullshit
I don't subscribe because you ask right before the video starts.