450
P. Liu
Fig. 7.5 Ancient Chinese’s understanding of the wind—Liezi rides the wind
This kun changes into a bird, called the peng. Its back is I do not know how
many thousand li in breadth”.
In fact, roc which was recorded in ancient times looks like an eagle in
appearance, and the flying postures of various hawks are very similar to those
of ancient roc. All the stories or things mentioned above are the fantasy of
ancient literati about flying. In order to turn flight fantasy into reality, people
have experienced long-term flight practices.
7.2 Exploratory Cognition of Flight
Through the deepening of the understanding of the attributes of force,
humans have moved from fantasy to practice. In order to fly, first of all, there
must be a lifting force acting on the aircraft (also called lift in aerodynamics)
to overcome gravity. As mentioned earlier, balloon rising to the sky is the
simplest example of the balance between lift and gravity. Knowing this principle, early aircraft such as Kongming lanterns, kites, bamboo dragonflies,
etc., solved the problem of lift generation in the simplest way. Kongming
P. Liu
Fig. 7.5 Ancient Chinese’s understanding of the wind—Liezi rides the wind
This kun changes into a bird, called the peng. Its back is I do not know how
many thousand li in breadth”.
In fact, roc which was recorded in ancient times looks like an eagle in
appearance, and the flying postures of various hawks are very similar to those
of ancient roc. All the stories or things mentioned above are the fantasy of
ancient literati about flying. In order to turn flight fantasy into reality, people
have experienced long-term flight practices.
7.2 Exploratory Cognition of Flight
Through the deepening of the understanding of the attributes of force,
humans have moved from fantasy to practice. In order to fly, first of all, there
must be a lifting force acting on the aircraft (also called lift in aerodynamics)
to overcome gravity. As mentioned earlier, balloon rising to the sky is the
simplest example of the balance between lift and gravity. Knowing this principle, early aircraft such as Kongming lanterns, kites, bamboo dragonflies,
etc., solved the problem of lift generation in the simplest way. Kongming