Chapter 3422 Zhao Yu's whimsy
Of course, when Marco was intensively preparing the "stealing secrets" plan, Qin Luo was not idle.
After two full days of sleepless and assiduous research, a brand new design was placed before Qin Luo's eyes.
The main structure is stipulated by Qin Luo, and it is still circular!
But in the center of the parachute, a hole was added, and ear fins were added on both sides.
"Zhao Yu, what's the matter with the hole in the middle?" Qin Luo frowned slightly, and looked at Zhao Yu with some doubts.
To be honest, in Qin Luo's impression, there is no parachute with holes.
Although Qin Luo is not very proficient in aerodynamics, he also has a basic understanding that once the parachute has holes, it will speed up the flow of air and reduce the resistance of the air.
He really didn't understand what Zhao Yu was thinking.
After two days of sleepless nights, come up with such a thing?
One thing to say, Qin Luo felt that the two days of staying up all night were all on the dog.
"Professor Qin, I call this hole the orifice. The size of the orifice is determined according to the needs. Generally, the larger the area of the umbrella, the larger the diameter of the orifice. Its function is also very simple. , is to allow the air to form a passage from bottom to top when the umbrella falls, so that the umbrella will remain stable during the descent." Zhao Yu said with a smile.
Round umbrellas are very unstable and are greatly affected by the air.
In order to solve this problem, Zhao Yu consulted countless materials, and finally he found a solution.
Make a small hole in the center of the parachute!
stroke access, thus increasing the stability of the parachute!
Stablize?
The corner of Qin Luo's mouth twitched. At this moment, he didn't know what to say!
Yes, he first proposed stability, in order to do his best to ensure the safety of the landing and the life of the astronauts.
But, he didn't say anything about making holes in the parachute!
Stability is important, but so is the drag of the parachute.
For the sake of stability, give up resistance, this is a typical waste of food due to pharynx!
"Whoo~"
Qin Luo let out a long breath, and forced himself to look at Zhao Yu!
"Zhao Yu, let me ask you, what is the most important function of a parachute?" Qin Luo gritted his teeth.
"Slow down the landing speed!" Zhao Yu said without thinking.
"Then opening a hole in the parachute can certainly form a passage and make the parachute more stable, but the slowing effect will be greatly reduced!"
"Have you thought about this?" Qin Luo gritted his teeth and said.
However, the moment Qin Luo finished speaking, Zhao Yu shook his head: "Professor Qin, actually opening the hole doesn't have much effect on the deceleration effect."
Qin Luo:? ? ?
no impact?
I don't read much, so don't lie to me.
Zhao Yu's words immediately stunned Qin Luo.
This simply refreshed his cognition.
"Zhao Yu, tell me carefully, what's going on?" Qin Luo asked.
He wanted to hear what kind of explanation Zhao Yu would give.
Making holes in the parachute has no effect on the landing speed. This is the first time Qin Luo has heard of such a theory.
The corners of Zhao Yu's mouth raised slightly, and a faint smile appeared on his face: "Professor Qin, you must know that area and resistance are directly proportional."
"As long as the area of the parachute is large enough, opening a hole will have no effect on the speed."
Qin Luo: "!@#￥%..."