We all know that the cost of an airplane is hundreds of millions of dollars, but the doors of airplanes have always been manual doors instead of automatic doors. Nowadays, all high-speed trains have automatic doors. Why don’t airplanes have automatic doors? This not only saves manpower and material resources, but also reduces a certain amount of work burden on the flight attendants, and the automatic doors are a small expense compared to the cost of aircraft.
When we take a plane, we often see a flight attendant on duty at the cabin door, waiting for the door to be closed. Sometimes the flight attendant will struggle to close the cabin door, and the same goes for opening the door. Why is it designed like this?
The reason is very simple. With the current technology, it is very simple to build an automatic door on an airplane. However, the reason why it is designed as a manual switch is mainly for safety reasons. . Although automatic doors are convenient and trouble-free, once an accident occurs and there is a circuit problem, it is impossible to open the door. In this way, passengers can easily miss the best escape time. Although manual door switches are more troublesome and laborious, they are safer and more reliable.
At the same time, the maintenance cost of manual doors is also lower than that of automatic doors. On the other hand, the overall weight of the decorative automatic door aircraft is relatively high. They are a bit heavier than manual ones, which will have a negative impact on the overall design and fuel efficiency of the aircraft.
It is for these reasons that aircraft cabin doors still maintain manual opening and closing. What do you think about this? Welcome to the comment area Leave a message~
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