The history of mankind is a story of the continuous pursuit of breakthroughs and innovations, and the airplane is one of the most fascinating achievements in this process.

From the Wright brothers' "flying machine" to the modern supersonic jet, the development of aircraft has always been a source of curiosity and wonder, let's turn the skylines upside down and explore the amazing world of flight.

1. The birth of the world's first airplane

In 1903, the Wright brothers successfully built the world's first controlled airplane in a remote area of North Carolina. The plane called the Wright Flyer, used two wings and a controllable rudder, and made four successful short flights, the longest of which was 852 feet.

2. The mysterious "cockpit number" on the plane

You may have noticed that each aircraft has a unique identification, usually a combination of letters and numbers. This is known as the "cockpit number" or "aircraft registration number" and is used to identify and track the ownership and operation of the aircraft.

3. Anonymous buttons on airliners

In flight, the "anonymous button" on the plane is an emergency communication system, which can send an urgent message to the ground control center without revealing the identity of the plane on the radio. This design is designed to ensure that pilots can remain safe in the event of an emergency such as hijacking.

4. The Miracle of Aerial Refueling

Aerial refueling is an amazing technology that allows aircraft to be refueled in flight, extending their endurance. This technology is widely used in aircraft and long-distance commercial aircraft, ensuring that the aircraft can be used in long-distance missions.

5. Secret cabins on planes

On some long-haul planes, you may find a tiny room known as the "pilot's lounge." This is where pilots are designed to rest during long flights, making sure they stay conditioned enough to fly safely.

6. Taste changes in flight

Have you ever felt the taste of your food change on a plane? Our senses of taste and smell are affected at high altitudes and low humidity, which is why food on an airplane may taste a little different.

7. The sonic boom of supersonic flight

When an aircraft flies faster than the speed of sound, it produces a special sound effect known as a "sonic boom" or "sound barrier". That's because the pressure waves created by the plane as it moves to reach the audible range for a split second, cause the distinctive explosion sound.

8. Challenges of in-flight food

The reason why the food enjoyed on the plane sometimes tastes bad is because high altitude, low humidity, and pressure changes can affect our sense of taste and smell.

Airline chefs often need to add some extra spices and condiments to the food to compensate for this effect.

9. The color of the black box

Despite the name "black box," the recorders on the plane are orange to make them easier to find after an accident. This color stands out in most environments and aids in finding and recovering this important flight data.

10. Aircraft design inspiration

Some aircraft designs are inspired by animals and forms from the natural world. For example, the A380 superjumbo's wing is curved and inspired by the wings of a seagull, a design that provides better lift and fuel efficiency.

11. Stealth technology on planes

Some aircraft employ stealth technology that makes them difficult to detect on radar. The technology uses complex geometries and materials to lower the aircraft's radar cross-section, making it more stealthy in the air.

12. Airplanes in Space

While aircraft typically fly inside the atmosphere, some can go to the edge of space. For example, SpaceShipOne was the first aircraft in the world to successfully conduct a private space flight, and it made a historic space flight in 2004.

As a masterpiece of human innovation, airplanes have not only changed the way we travel but also promoted the continuous advancement of technology. These interesting facts not only give us a deeper understanding of the history and technology of aircraft but also let us admire the wisdom and courage of human beings to go forward bravely and challenge the blue sky.