At the port on the east coast of Anyang, five fully loaded ironclad ships set out again. Chang Lin was full of energy and said, "This time we will use a little strategy. We will drive all the way to the southernmost coast of Jin State, close to the coast of Liu State, and then attack northward from there. If we can open a gap for Liu State, I think His Majesty will definitely be touched. Haha..."
…
After Li Xian bid farewell to the ironclad ship again, he returned to Qingyun Valley with Xu Ren and others to watch the research on jet aircraft. He wanted to take a look a few days ago, but there were some minor problems with the wind tunnel test and technical design, so he made some modifications and it took a few days.
The problem was very sudden. During the wind tunnel test, when the wind speed reached 800 kilometers, the floating cloud formation and the spirit gathering formation on the plane actually started to strike! In addition, when the speed reached 800 kilometers, the plane began to vibrate slightly.
This is actually the same problem, the formation fails due to the vibration of the aircraft.
This sudden change left the flight department staff helpless - the plane actually vibrated, and they could not find the cause after a long inspection. Li Xian probably knew what the cause was, but he did not point it out. Instead, he asked Yun Feihong and others to study it bit by bit. Technology requires accumulation and independent breakthroughs.
Finally, Yun Feihong had a sudden idea and used magic and different colored water flow to test the fluid mechanics at high speeds, and finally found the reason. The reason is very simple, it is still a problem with the design of the aircraft's appearance. High-altitude aircraft and low-speed aircraft have different requirements for appearance.
There is a very important principle in aircraft design, which is the "constant cross-sectional area" law. Simply put, the fuselage of a high-speed aircraft should shrink slightly in the wing part to compensate for the increase in cross-sectional area caused by the wing. This small law is the key technology of supersonic aircraft. (Today's supersonic aircraft are all thin waist)
I just don't know the reason, it might be because of the formation, or maybe it's because of insufficient technical accumulation, or even it might be because of the laws of different worlds. In short, the jet designed by Yun Feihong began to be disturbed by this law at 800 kilometers.
The recalculation and redesign delayed the aircraft testing for several days. After working overnight and using magic to help build it, the new prototype finally appeared.
Jet aircraft have a completely different appearance from propeller aircraft; their neat, simple, streamlined appearance is full of inexplicable beauty and power. The first jet aircraft was a single-engine aircraft with an open front end and an air intake that looked like a devil's mouth, which was quite ferocious.
In addition, the solution for aircraft to fight against the formation is - refining equipment!
In the past, the floating cloud formations on aircraft and propeller planes were all burned. Burning formations is a means of making magic tools, which is low-cost, poor stability, and weak anti-interference ability. But now it is obviously not possible to continue like this. Yun Feihong did it very simply, directly using the means of refining magic tools to refine the main parts of the aircraft such as the shell and skeleton into magic tools.
In this way, the aircraft is extremely solid, and there is no need to worry about supersonic thermal barriers in the future. The only problem is that the cost is a bit high, extremely high. The entire aircraft uses more than 200 "magic weapons" from top to bottom, which can be called the most expensive machine in Anyang's history. In order to connect these magic weapons, the screws are made of black iron.