The airplane can carry a payload of 139 tonnes with a volume of (24462 ft³) in the main cargo deck.
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The 747-8 is externally similar to the 747-400, but it has a higher gross weight, a longer fuselage, a new higher-aspect-ratio wing, and new higher-bypass-ratio engines (see fig. 1).
The reason the 747–8 didn't do so was mainly because the trends of airlines changed and it came too late. To sum it up, airlines chose to either go for the 777–300ER because it was almost as large and was more guaranteed to be filled up, or they went for the A380 if they needed high capacity.
If Boeing does halt production, airlines will likely extend the service lives of their 747-8s beyond the typical lifespan of 25-30 years, Dimitroff says. “There is no equivalent replacement,” he says.
The airplane can carry a payload of 139 tonnes with a volume of (24462 ft³) in the main cargo deck. The 747-8F can carry 16% more revenue cargo volume and provides 17% more fuel-efficiency than its predecessor.
The Stratolaunch Plane by Numbers:It can carry over 230,000 kg (500,000 lb) of payload. During it's maiden flight, the aircraft flew for 2.5 hours, achieving a speed of 304 kilometers/hour and altitudes up to 5,181 meters (17,000 feet).
The Boeing 747-8 is a wide-body airliner formerly developed by Boeing Commercial Airplanes, and the largest variant of the 747. After introducing the 747-400, Boeing considered larger 747 versions as alternatives to the proposed double-deck Airbus A3XX, later developed as the A380.
Range and fuel capacityThe range of the A380 beats the 747-8. Even though the difference is not overwhelming, it is enough to provide an advantage for ultra-long-haul operators. Even when it comes to fuel capacity, this model leads the way.