Breaking Xiyi's Hypocrisy 65 Xiyi plagiarized China's navigation technology
(From Zheng Hefu to Boeing Tail Rudder)
Xu Yu
Figure 1 is the rudder diagram of Zheng Hefu's ship.
Figure 2 is a rudder diagram commonly used by small Spanish sailing boats.
Figure 3 is a dismantling diagram of the tail rudder pioneered by Boeing.
In the Northern Song Dynasty, large Chinese seagoing vessels already used pulley sets to control sails and rudders. It was Xiyi who saw the rudder structure of a large Chinese ship and copied it onto their kayaks. And a hundred years ago, this mechanism of controlling the direction of pulley steel cables was used in cars and airplanes.
In a blink of an eye, when China produced the Tenth Fortune Ten, the chief designer of the Boeing 747, Jossat, actually told the Chinese that the steering rudder was too laborious.
This is really an irony, the stealing master turned around and came to China to pretend to be a master within a few years.
Fortunately, now the C929 is also about to be mass-produced, which can be regarded as the greatest consolation to the Chinese shipbuilding engineers of Zheng He's era.
