We're all familiar with the Boeing 747. Don't we have a saying? Build a plane, build a 747. But the 747 is going out of production next year. Why? Because it's a quad plane, which is an airplane with four engines, and that airplane is going to be obsolete. Why? Can we fly if we only run two of these four engines?
Why should Four Fly be eliminated? Because this is the world of twin-flying, planes with two engines. Some people here don't like it. If it's a two-man world now, why does a 747 have four? Well, Boeing will be gone by 2022. The so-called planes will be pushed by the waves on the beach 39bet-xsmb-xổ số tây ninh-xổ số binh phước-xổ số binh dương-xổ số đồng nai. In addition to the 747, the A380 is also out of production, and it's tragic to think that this A380 is the time to be full of ambition, only to be suddenly told that you are not needed. Four flies are not so popular, mainly because of the cost of money.
The points that cost money, the first is the weight of the engine, the second is the drag of the engine.
First, the weight of a high-thrust engine is generally more than 11 tons, so the weight of these four is not small for the aircraft. After all, to fly with the amount of fuel consumed at any given moment, enough to drink a pot.
Second, what makes a plane fly? It's aerodynamics. Basically, it's because there's a different curvature on the wing, so there's a little bit of speed on the wing, a little bit of pressure on the wing, a lot of pressure on the wing, and then the wing on the wing is holding the wing up. How many engines on the wing, will it affect the flight of the plane, give the plane more drag? That's for sure.
Here a friend is not willing, that we four fly OF OPEN two, not on the line? You can fly, we four fly open two still not worse than you, and we can also two in turn open! Good points about the idea, but no. Why?
First, four flying planes can't fly high. Normally, a four-plane airliner is fully loaded, and with only two engines running, the aircraft cannot reach cruising altitude. What is cruising altitude? It's the cheapest altitude. Technically, every aircraft has its cruising altitude. For example, the Boeing 747 has a cruising altitude of 10,670 meters, which is about the altitude at which the plane keeps moving in a straight line at a constant speed, which is the most economical and economical. If we only fly two, we'll be flying low and medium, which is the most expensive. We shut down two engines to save money, only to end up paying more.
Second, quad jets can be tricky to handle. A full man is stronger than a hungry man, and so is an airplane. Your four-engine plane, only to fly two, the plane is not enough power, then the pilot control, is not more trouble? As the saying goes, safety is no small matter, and to save money, and the operation of death swim, normal people do not do it.
Finally, as many of us bosses say, if you don't work, you become a liability. The engine couldn't escape. The weight and air resistance of the two non-working engines are overcome by the remaining two engines. Two people do the work of four... You know, if we were in this situation, we'd probably just walk away, give you a little bit of money, and a lot of money, and then we're -- we're -- we're -- we're late. But the engine has to run at full capacity, which uses a lot more fuel than usual.
Therefore, four fly is bound to be eliminated. At present, all of them, like 787, 320 and 350, are double flying. Sifei is not only not popular, but also the number of people is becoming less and less. If we meet Sifei one day by plane, please remember to take photos and post them in the moments of friends.