Liu Zheng had a bad smile on his face: "You will know if you give it a try?"
soon.
He called a few soldiers, loaded the newly crafted hang glider into a carriage, and drove to the countryside. Jiang Xuan, Qin Changfeng, and Pei Qianyun were extremely excited.
certainly.
Liu Zheng felt that they would no longer be able to laugh after a while.
Although Liangzhou is not as windy as the Xiongnu grassland, in winter, the winter wind blows on the face and it hurts.
Several people found a flat land not far from the hill. Liu Zheng surveyed the terrain and thought it was OK, so he nodded.
Most of the mountains in this area are neither high nor low, which are perfect for gliding. Judging from how well he controls his quality, even if the car overturns... there will probably be no life-threatening problems.
If a delta wing wants to fly, it must generate an upward force. This upward force is lift. The delta wing uses the specific cross-sectional shape of the airfoil to cause the air flowing through the upper and lower airfoils to produce different flow speeds, thus forming a force difference.
, producing lift.
To fly a long-lasting hang glider, the basic rule is to look for updrafts and fly into them. There are many causes of updrafts, the most common ones being ridge airflow and thermal airflow.
When horizontal wind hits an obstacle, it is forced upward. This is the ridge airflow.
When the ground (water surface) somewhere is heated by the sun and conducts heat to the nearby air, the hot air rises, forming a thermal airflow.
Generally speaking, ridge airflow is distributed in a band along the mountain range, and the pilot shuttles back and forth among them. Thermal airflow starts from a certain point on the ground and rises in the shape of a column or thermal bubble, and the pilot spirals upward in this area.
This is why Liu Zheng chose hang gliding to plot the Xiongnu grassland.
Because there is no shortage of ridges on the grassland!
The unique Xiongnu grassland is more suitable for hang gliding flight!
Just imagine, if the glider is successfully developed, the Yinzhou Army will be able to travel thousands of miles at a time, and the Xiongnu's mobility advantage will be wiped out in an instant!
Not only can it meet combat needs, but it can even achieve stronger survey effects!
"Ah? Master, are you going to get up on the ground?"
All three of them are a little strange.
They thought that for the first time, they should jump from a high place first...
Liu Zheng rolled his eyes, I asked you to fly, not to use you as a parachute.
"Of course. Who comes first?"
"Me me me!"
Jiang Xuan was naturally the first, which made Qin Changfeng and Pei Qianyun roll their eyes.
Then, Liu Zheng taught Jiang Xuan how to hold the airplane. Liu Zheng chose the rattan grip. Because the rattan grip has strong control over the elevation angle, it is conducive to controlling the elevation angle according to various takeoff conditions during takeoff.
Jiang Xuan quickly mastered it and asked excitedly: "Can it really fly? Is it really possible?"
"Remember the movements I taught you just now. If I tell you to run, just run!"
Liu Zheng chuckled.
The other two people looked at Jiang Xuan with envy. If he really flew, wouldn't he be the first person to fly?
At this time, the breeze picked up.
Liu Zheng shouted: "Run!"
Jiang Xuan carried the hang glider and ran facing the direction of the wind.