Capable of accommodating nsr
Due to current economic pressures on the airline industry, high seating densities in the economy class cabin are likely to continue.
In some of the largest single-deck wide-body aircraft, such as the Boeing 777, the extra space above the cabin is used for crew rest areas and galley storage.
The Trent 900 is designed to fit into a Boeing 747-400F freighter for easier transport by air cargo.
The interiors of aircraft, known as the aircraft cabin, have been undergoing evolution since the first passenger aircraft.
The trijet design was dismissed due to higher maintenance and fuel costs compared to a twinjet.
Most modern wide-body aircraft have two engines, although the heaviest wide-body aircraft are built with four engines: the Airbus A380, Boeing 747-8.
Complete GE90 engines can only be ferried by outsize cargo aircraft such as the Antonov An-124, presenting logistics problems if a 777 is stranded in a place due to emergency diversions without the proper spare parts.However, airlines quickly gave in to economic factors, and reduced the extra passenger space in order to maximize revenue and profits. The biggest wide-body aircraft are known as jumbo jets due to their very large size; examples include the Boeing 747 ("jumbo jet"), Airbus A380 ("superjumbo jet"), and Boeing 777X ("mini jumbo jet").Following the success of the Boeing 707 and Douglas DC-8 in the late 1950s and early 1960s, airlines began seeking larger aircraft to meet the rising global demand for air travel.The British Three-Eleven project never left the drawing board, while the Russian Il-86 wide-body proposal eventually gave way to a more conventional wing-mounted engine design, most likely due to the inefficiencies of mounting such large engines on the aft fuselage.
As jet engine power and reliability have increased over the last decades, most of the wide-body aircraft built today have only two engines.Engineers were faced with many challenges as airlines demanded more passenger seats per aircraft, longer ranges and lower operating costs.