Boeing 747X - The New Large Airplane Proposed By Boeing But Never Built

Link to Boeing 747, Queen of the Skies for 50 Years by Lorenzo Valentina.
https://www.amazon.com.au/Boeing-Queen-Skies-years-illustrata/dp/8832102137

Two decks down the length of the plane, and carrying over 650 passengers, this 1990s proposed version of the Boeing 747x would not only be the biggest passenger aircraft flying in the sky, but it would put crush the efforts by Airbus to build their own double-decker forever.

But the 747x would never actually be built by Boeing, with its legend powering rumors about the next Boeing new large airplane for generations to come. We will look over what the New Large Aeroplane was, the other designed Boeing came up with, and why it was NEVER BUILT.

Boeing had dreamed of building a pure double-deck aircraft as far back as 1965. Designers at the time repeatedly ran into issues such as. where to place exists, how to service the plane with 1970s airports, and even how to load the bags on board. Boeing designer Joe Sutter, said that the double-decker 747 was a "a clumsy airplane" that was "short and stubby".

Boeing would go with a single deck 747, with the cockpit located in a hump, on a second level, only because it would allow a front cargo door for future freighter conversions. After all, the future of air travel surely belonged to the world of supersonic jets like the Concorde.

In 1993 that Boeing would revisit the double-deck design concept. They saw not only Airbus and rival MD working on double-deckers. Boeing predicted that this market would need 2,500 airlines with more than 350 seats between 1990 and 2005, its 747-400 had got a staggering 382 orders in five years, 130 of them in 1990.

There would be three different programs to create a new large airplane and a successor to the Boeing 747, the VLCT(Very Large Commercial Transport), The N650, and LAPD (Large Aircraft Product Development).

The first project would be a joint effort across the Atlantic. Detailed studies of the 500-seat plus market showed demand for between 400 and 500 aircraft, not really enough to justify billions in development for one company.

To bring this VLCT to the market Boeing was looking at working with a European partner, like Airbus. They butted heads on aircraft design philosophy, such as the cockpit fly by wire debate.

The next program, the N650, was started in 1991. It could carry 650 passengers with 18 seats across in economy! It would look very similar to what would become the Airbus A380.

The last program, LAPD, is possibly the most bizarre and truly deserves its own video. It was a long single deck monster plane dubbed the 763-241, based on the C-17.

The design they came up with had 69-foot-tall T-tail, a 262-foot span and a length of more than 250 feet. It would carry 450 passengers, and have sleeping berths above the seating cabin! However, the concept had structural issues and was too big.

With the Boeing 747-400 being its best seller yet, Boeing wanted to upgrade 747 platform and avoid the new design. Boeing reevaluated the passenger requirements to 450 to 650 seater.

They were the 747-500X -600X and -700x. they would use the cutting edge tech of the Boeing 777 and have a new cockpit.

The 747-500X concept featured a fuselage length of 18 ft (5.5 m) to 250 ft (76.2 m) long, and the aircraft was to carry 462 passengers over a range up to 8,700 nautical miles (10,000 mi, 16,100 km).

The 747-600X concept featured a stretch to 279 ft (85 m) with seating for 548 passengers, a range of up to 7,700 nmi (8,900 mi, 14,300 km).

A third study concept, the 747-700X, would have combined the wing of the 747-600X with a widened fuselage, to carry 650 passengers to a range as a 747-400.

But using all this new 777 technology proved a big gamble. The next tech doubled the cost of the 747x to $5 Billion US, and also made it no longer share a commonality with previously Boeing 747s. lastly, airlines knew about the Airbus A3XX program in the works.

In 2000, and Boeing reworked the -400 series into the 747x.

The 747X aircraft was to carry 430 passengers over ranges of up to 8,700 nmi (10,000 mi, 16,100 km). The 747X Stretch would be extended to 263 ft (80.2 m) long, allowing it to carry 500 passengers over ranges of up to 7,800 nmi (9,000 mi, 14,500 km). Freighter versions of the 747X and 747X Stretch were also studied.

But Boeing went for more outlandish concepts like the Boeing Sonic Cruiser.

From here, Boeing would focus on its twin-jet business like the 777 and 787. They did propose the 747-400XQLR (Quiet Long Range) which had an increased range of 8,056 nmi (14,920 km).

All of this research was put together for a final design of the Boeing 747 in 2004, based on the 787 technology and called the 747-8.
Was the Boeing 747X and New Large Aeroplane project was simply a ruse to get Airbus to commit to the A380 program. No, It cost Boeing too much.

At the end of the day, airlines wanted a plane that matched the RANGE of the 747, but not the capacity.

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