Now many people like to fly. There are many interesting and common sense about airplanes. I believe we all have a certain understanding, but is it correct?
1. The round trip time of aircraft is usually different. Why is the round trip time of aircraft different?
Misunderstanding: the influence of the earth's rotation direction
The truth: the influence of wind direction
There is a clear difference between downwind and upwind. An aircraft flies in the atmosphere. It controls the aircraft to maintain a relative air speed, which is called 'airspeed'. At the same time, the air is moving. That is to say, when flying in the downwind, the actual speed of the aircraft is the airspeed plus wind speed. When flying against the wind, it is just the opposite. For the same distance, the time required for flying in the downwind and against the wind is quite different.
2. Why is row 31 displayed when the third row is clear?
Misunderstanding: appear to be a big plane
Truth: it's convenient for the flight crew to change the plane
In order to make it easy for the aircrew to change aircraft types or merge flights, airlines have basically unified the naming method of seat number. Row 1-5: applicable to first class of dual channel aircraft; row 6-24 (excluding rows 13 and 14): applicable to first class of single channel aircraft and business class of dual channel aircraft; row 25-30: applicable to super economy class of all aircraft; from row 31: applicable to economy class of all aircraft; even if the flight has no first class or only two rows of business class, economy class still starts from row 31.
3. Why are airplanes' white '?
Misunderstanding: it seems relatively new
True term: low cost, low heat generation
The cost of color painting an aircraft ranges from $50000 to $200000. At the same time, the whole spraying work takes 2-3 weeks, which will also cause loss of income. In addition, white can reflect all bands of light, so light energy will not be converted into heat energy, while other colors will absorb multiple bands of light and convert them into heat energy, which will cause the object to become hot.