In this blog post, we’ll explore the emergence of flying cars and the principles of mechanical and aerospace engineering that make them possible. We’ll also take a look at how these technologies might transform future transportation.
A New Revolution in Flying Cars Led by Mechanical and Aerospace Engineering
Throughout human history, the evolution of transportation has played a pivotal role in changing the way we live. In the early days, people traveled using horse-drawn carriages and carts powered by animals, but after the Industrial Revolution began and automobiles powered by internal combustion engines emerged, we completely transformed the paradigm of mobility. Through these changes, cities became more accessible, and the world evolved into a more connected society. However, internal combustion engine vehicles still have limitations, and the need to address environmental issues and traffic congestion has become increasingly urgent.
Today, the cars we commonly use can travel hundreds of kilometers in a single day powered by internal combustion engines. Thanks to their convenience, cars are often called the “crown jewel of mechanical engineering,” and we have easy access to this innovative mode of transportation thanks to Ford’s mass-production assembly line. However, the popularization of cars has brought with it several problems. As the number of cars has increased, traffic congestion has worsened; roads often turn into parking lots, especially during rush hour or on holidays. A prime example is the situation where highways become completely gridlocked during major holidays.
Furthermore, due to the nature of internal combustion engine technology, cars continue to burn fuel even when stationary, resulting in unnecessary energy consumption and exacerbating environmental pollution. Because of these problems, many people sometimes imagine, “Wouldn’t it be great if cars could fly?”
Have you seen *Harry Potter and the Chamber of Secrets*? After Harry and Ron miss the Hogwarts Express, they head to school in a flying car. While watching this scene, you might think it’s just a fantasy far removed from reality, but the recently developed flying car, the “Terrafugia,” is making this imagination a reality.
The Principles of Flight for Flying Cars
So how can a car that rolls on the ground fly through the sky like the Terrafugia? Flight can be explained by two main principles: Newton’s Third Law and Bernoulli’s Principle.
First, Newton’s Third Law states that for every action, there is an equal and opposite reaction. Air flowing over the surface of an airplane wing moves at a constant speed, generating a force that lifts the wing upward. This is similar to the phenomenon where pouring water onto a spoon causes the water to flow and push the spoon away. The air flowing beneath the wing lifts the wing upward, causing the object to float in the air.
Next, Bernoulli’s principle, based on the law of conservation of energy, explains the relationship between speed and pressure. Since the air passing beneath the wing moves slower than the air passing over it, the pressure beneath the wing is higher. This pressure difference generates a force that pushes the wing upward—that is, lift. These principles prove that it is scientifically possible for a flying car to take to the skies.
Terrafugia: The Flying Car of the Future
Terrafugia is the world’s first flying car, designed to drive on the ground and fly in the air. The most innovative feature of this vehicle is its folding wings, which take just 30 seconds to deploy. The vehicle is highly space-efficient, small enough to be stored in a private garage, and successfully completed its first test flight in 2012. The Terrafugia can carry a payload of approximately 600 kg and fly at a maximum speed of 222 km/h. By comparison, a light aircraft typically carries about 115 kg of cargo and flies at 100 km/h.
The Terrafugia excels in performance and boasts lower operating costs than jet fuel thanks to its use of unleaded fuel. Its range reaches up to 740 km, which is a very impressive figure.
The Terrafugia is merely the first step toward a flying car. In the future, as this flight technology advances, a new form of transportation—a combination of a car and an airplane—may become commonplace. For example, while it takes more than five hours to travel the 400 km from Seoul to Busan by car during the holidays, using the Terrafugia takes less than two hours at 222 km/h. Since it travels in a straight line like an airplane, the actual distance traveled is even shorter.
The Role of Mechanical and Aerospace Engineering
Mechanical and aerospace engineering plays a central role in the development of these flying cars. During the design process of the Terrafugia, factors such as vehicle weight, wing efficiency, and in-flight stability all had to be taken into account. This is a highly complex task, but it became a reality thanks to advancements in mechanical and aerospace engineering. Mechanical and aerospace engineering is a discipline that creatively solves engineering problems to create new machines. Just like flying cars, our future modes of transportation can be said to stem from the innovative ideas of mechanical and aerospace engineering.
Future transportation systems will be far more innovative than we can imagine, and mechanical and aerospace engineering will be at the center of it all. Even now, many scientists and engineers are continuing their research to advance flying cars like the Terrafugia, and the results will change the paradigm of future transportation.
