7 Eye-Opening Facts We Didn’t Know About Aviation

year ago

Why are aircraft windows round? Why do airplanes have curved wing tips and why do passengers always board planes from the left side? Everything connected with aircrafts is well-planned and well thought out. Perhaps this is the main reason why a plane is the safest way to travel.

Bright Side will answer the 7 most popular questions about airplanes.

7. Why are aircraft windows round?

In the beginning of the 1950s, de Havilland developed Comet, the world’s first commercial jet airliner. It was literally a miracle. But a year later, it fell to pieces right in the sky. In several months, 2 more airplanes crashed.

Engineers conducted a diagnosis of each screw of the aircraft and found the problem: the windows were square. The thing is, pressure builds more around the corners of square windows and this pressure only increases during a flight. So it was decided to make windows round. Thanks to this decision, flights are way safer now.

6. Why do airplanes have curved wing tips?

During a flight, the pressure is lower on top of the wing than it is under the wing. The air tends to move from the high pressure below the wing to the low pressure above the wing around the wingtips. In the past, wingtips were straight, and the airflow caused severe turbulence.

So scientists decided to bend the wingtips upward to reduce turbulence, prolong the wings’ durability, and save a lot of fuel during travel. Thanks to this feature, we feel more comfortable during a flight.

5. Why do planes have different nose shapes?

The sharper the nose is, the faster an aircraft is. But a longer nose keeps pilots from seeing the runway properly, that’s why passenger jets have rounded noses.

Engineers solved this problem in the ’60s. They invented the fastest passenger jet that was able to tilt its nose. While taking off and landing, the aircraft tilted its nose downward. During a flight, the nose was brought back to its starting position.

This strange design has a purpose: it helps pilots see the runway better.

4. Why are planes painted white?

Planes are nearly always painted white and there are several reasons for this:

  • Heat reflection. If an aircraft is painted white, it accumulates less heat. This is better for passengers and economically profitable for airlines.
  • White paint is less expensive. White paint is way cheaper than other paint.
  • Preventing collisions with birds. Birds can see the reflection from white surfaces better and don’t often collide with airplanes for this reason.
  • White paint helps reveal even small cracks and dents. Imperfections are easily recognized in case of an accident, and it’s easier to notice damage.

3. Why is the exit on the left?

Not all, but the majority of airplanes have the main passenger entrance on the left side. There are 3 theories that explain this fact.

  • Theory #1. The right side is for the luggage (cargo hatches are also on the right), so it’s not safe for passengers.
  • Theory #2. Some people say that it’s a tradition from the past: ship ramps were always on the left.
  • Theory #3. The captain of an aircraft used to sit on the left. The location of the passenger door allowed them to better park the plane at the passenger deboarding area.

2. How do planes look spacious?

Designers use several tricks to make aircrafts look bigger and more spacious than they actually are. For example, the walls have a certain shape to reflect the light correctly. The illumination between the ceiling and overhead bins makes the ceiling visually higher. Thanks to these tricks, it’s easier for people who suffer from claustrophobia to travel by plane.

1. Why don’t pilots have beards?

Some airlines don’t allow pilots to have beards. The thing is, facial hair may stop the oxygen mask from fitting securely on the pilot’s face and operating properly. In case of an emergency, pilots must stay conscious to be able to save people’s lives.

Bonus: Why are there no stand-up seats?

They’ll appear soon. During the Aircraft Interiors Expo, an Italian company introduced new seats for ultra-low cost carriers.

These seats may look inconvenient, but if you’re traveling for less than 2 hours and don’t want to pay huge sums of money, stand-up seats will be just what you need.

Would you like to try a stand-up seat? Do you think it’s a great option? We’d like to know what you think.

Please note: This article was updated in August 2022 to correct source material and factual inaccuracies.


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The stand up seat is horrible. What will happen during take offs and landings? What about emergencies? Bad weather? Turbulence?


The "droop snoot" (moveable nose cone) was an Anglo-French design. The Russians copied "Concorde" the world's first delta wing airliner to travel faster than the speed of sound. Other than that, item 6 is correct.


standing up on flights, horrible option. and what if there's a problem and you aren't allowed to deplane for 3 hours or more as I have experienced?


Very informative article. Finally got to know the answers that have always interested me
thank you guys


Such an interesting article!
But now the questions that bothers so many people, why do we need to put the phones on the flight mode during the flight?


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