Why does the A380 only use 2 engines for reverse thrust?

A380s are designed to come to a complete stop using their brakes alone. Ultimately the decision was made to put reverse thrust on two engines to help minimize the risk of aquaplaning. But it was also decided that reverse thrust on all four of the A380 engines was definitely overkill.



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Simple answer is: No. The A380 is massive as it is. It needs four just as massive, powerful turbofans to get it to speed. Taking the common engine choice of the A380, the Trent 900, produces 77,000 pounds of thrust each.

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Increases Passenger Capacity The Airbus A380, for example, has a passenger capacity of 853. Like most other wide-body airplanes, the Airbus A380 is powered by four engines. This allows it to carry more passengers than its two-engine and single-engine counterparts.

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An A380 has four engines, each of which provides around 356.81 kN (80,210 lbf) of thrust. These four engines' combined thrust equates to around 1,427.24 kN (320,840 lbf), which powers the aircraft to lift it into the sky.

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They are both safe — even if one type has a slightly higher accident rate, that rate is still infinitesimal. Q: Is a four-engine 747 safer than a two-engine 777? A: No, they are both safe. Having two additional engines is not a guarantee of increased safety.

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While it is possible for an A380 to operate on a single engine, it is not ideal as the aircraft would experience a decrease in speed, drag, and loss of altitude, making it crucial for the crew to restart the other engines or find a suitable airport for an emergency landing.

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Now that the pandemic seems under control, the great queens of the sky are making a comeback. Etihad, Emirates, Lufthansa, Qantas, British Airways and other airlines, including new start-up Global, are putting the A380 back to work.

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Efficiency. The primary reason why Boeing opted for a twin-engine 777 was due to the unparalleled efficiency it offers. Boeing had already noted the use of the 767 on transatlantic operations after ETOPS certification in 1985, bringing down the last barrier for long-haul twinjet operations.

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Aircraft age is not a safety factor. However, if the aircraft is older and hasn't been refurbished properly, it may cause flyers some inconvenience such as overheating, faulty air conditioning, or faulty plumbing in the lavatory.

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Both Airbus 380 and Boeing 777 are very safe aircraft.

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Because of the shape of an A380 wing, a supercritical design, with a slightly curved upper surface, airflow over the top of the wing can achieve supersonic or supercritical flow before the entire aircraft goes supersonic.

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However, the $445 million price tag of each aircraft was not sufficient to even cover the production cost, so with Airbus losing money on each A380, and with orders evaporating, it made economic sense to cease production.

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