How much more efficient is a 787 than a 747?

The 747-400 uses 10 tons of fuel per hour. The 787 uses five tons per hour. With such a massive difference, it's clear why the sky is full of 787s at the moment and not 747s. However, with 40 years of technological improvement between the two models, it's not surprising that 787 performs so much better.



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The Dreamliner is a successful aircraft, still in production with more than 1600 delivered or on order. The list price for a new Boeing 787-8 is $239 million dollars. Yet even as international travel opens again for these long-range aircraft, two Dreamliners barely ten years old are waiting for the wrecker's ball.

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The 787's simple pivot trailing edge flaps allow for much smaller flap track fairings than on conventional aircraft. This gives the airplane highly efficient lift-to-drag characteristics that reduce fuel consumption and costs.

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Its exit limit is set at 420. Despite not flying commercially until three years after the original 787-8, this version has since overtaken it in terms of popularity. This is presumably thanks, in part, to boasting the best range of any Dreamliner. Indeed, the 787-9 can operate flights up to 14,140 km (7,635 NM) long.

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While passengers love the experience in the back, it's also a great place for the pilots to work. A number of features on the aircraft set it apart from other aircraft types. So, even when your working day can be 19 hours long, I'd much rather be doing it in a Dreamliner than any other type.

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The longer the 787s remained on the ground, the more it would cost to get them to fly again, due to the maintenance work required. As a result, they were no longer airworthy.

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“In reviewing certification records, Boeing discovered an analysis error by our supplier related to the 787 forward pressure bulkhead,” said the company, referring to the portion of a plane at its nose that maintains the pressurized conditions in the cabin.

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The FAA said the leaks could damage critical equipment and lead to a “loss of continued safe flight and landing.” The agency said one airline found wet carpet in the cockpit of a plane and, when it inspected its entire fleet of 787s, found “multiple” planes with leaking faucets.

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The typical lifespan of airliners The composite-driven Boeing 787 Dreamliner is designed for 44,000 flight cycles. These jets can theoretically last several decades with an average of two flight cycles a day.

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Did you know that the 787 can deploy a propellor underneath its fuselage? It's called a RAT.

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The 787 was the first major commercial aircraft to use carbon fiber composite components in the fuselage and wing construction. These make the aircraft lighter but still offer high strength. New, more efficient engines. The 787 is designed to take either the General Electric GEnx or the Rolls-Royce Trent 1000 engine.

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In July 2003, a public naming competition was held for the 7E7, for which out of 500,000 votes cast online the winning title was Dreamliner.

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