Rocket engineer: 'Ocean Crossbow' An Duong Vuong acts like a container rocket?

In early December, rocket engineer Vu Dinh Thanh sent a declaration to the National Office of Intellectual Property (Ministry of Science and Technology) to register the invention of the invention named: 'Crossbow shoots many arrows, the crossbow force works. arrows, in the tube there are many small arrows'.

Thanh himself said that it is possible that the operation of this crossbow is similar to the magic crossbow in the legend of An Duong Vuong.

"In the past, many people thought that the details of" The God Cross that could shoot hundreds of arrows and the cyber-hit once "were fictional, but through research I found that this was entirely possible. God shows the intelligence and creativity of Vietnamese people and that is a testament to the development in the production and manufacture of weapons to protect the nation and the nation " , said Mr. Thanh.

Thanh and crossbow products shoot many arrows.

Missile rocket engineer explains weapons in history

Vu Dinh Thanh graduated from the Czech Military Technical Academy in the late 1980s. He had a patent for the rocket wing of the Republic of Cezch while working at a national rocket engineering research institute. this. Currently, he is working at a leading rocket research and development corporation in the world.

Working in advanced science and technology environment in many developed countries, but Mr. Thanh is very interested in the study of weapons that have appeared in Vietnamese history and literature.

Mr. Thanh is testing a crossbow shooting multiple arrows.

"About 3 months ago, I researched and wrote a paper on the principle: King Quang Trung discovered Phosphorus and used it to fight against the Qing army. By chance, a military friend said," I found out. on how to fight the enemy of King Quang Trung, try to find an explanation about the magic crossbow of An Duong Vuong. 'From that suggestion, I went to read history, visit Vietnam to visit the museum and research. Explaining the pressing crossbow pressing " , Mr. Vu Dinh Thanh shared.

Mr. Thanh said that the crossbow is quite simple structure, easy to disassemble.The materials that make up it are not difficult to find.The bowstring was dismantled from a sports bow.

Arrows and arrows are the most special parts that decide the difference and effectiveness of this invention.

After coming to see the Co Loa copper arrows are still on display at the National Museum of History. Mr. Thanh ordered the workers to make copper arrows of similar size and shape.

"The first time I saw the Co Loa copper arrow at the museum, I wondered why it was so short. It was only 8 to 11 cm long. It was completely different from the previous imagination." I go to the length of the arrow and the size of the crossbow ", Mr. Thanh shared.

Special findings

The copper arrow is only 8-11 cm long.

"I kept thinking about why the arrows are so short. If you attach another body, what kind of attachment. Then I think of another option. That is, the arrows can be attached to something else to shoot, ' Thanh said.

Thanh continued to search for materials in the study of the magic crossbow in the legend. Not long after, he found information that Assoc. Prof. Dr. Le Dinh Sy, former Deputy Director of the Vietnam Military History Institute introduced at the Scientific Conference of famous General Cao Lo many years ago. Assoc.Prof. Dr. Le Dinh Sy mentioned that Co Loa people said that people dug up the sincere area of ​​Sa market area with a copper pipe about half a meter long, the two ends were sealed, along the trunk carved like a flute. Before the August Revolution, in Co Loa also had the procession of magic crossbow, the crossbow was made of paper, in the middle of the body of the crossbow was a wooden gutter, many holes were put on each body, each hole had an arrow. This wooden gong is similar to a copper pipe dug in Sa market. The tube with the hole is presumed to be the tube for firing a batch of arrows.

From the historical records and experience of a rocket engineer, he thought of using an arrow canister .

Thanh thought about using an arrow case.

"I made an arrow case from bamboo. I thought that bamboo could be the material that his father used at the time. One end of the bamboo tube, I made a lid that just fit the tube. and punch holes to make copper arrows. "

Bamboo arrow canister.

'Small-sized arrows are arranged in a circular tube, the arrowheads facing the target will shoot. The force of the bowstring will impact the circular pipe, like firing a big arrow. When the bamboo tube reaches the position of the crossbow, there will be two brakes to 'brake' the bamboo tube, while the 6 arrows follow the inertia to fly forward. The arrow flies out of the crossbow similar to when you ride a fast speed motorcycle, you hit an obstacle that stops the motorcycle and the person in the car flies forward. That is, the arrows fly forward according to the inertia, the force of the bow does not directly impact on each arrow like how to shoot a crossbow or conventional bow, " Thanh explained.

"If you keep this principle, the arrows can hold up to hundreds of arrows."

The small arrows are arranged in a circular tube, the arrow heads towards the target will shoot.

Mr. Thanh also directly discussed with many colleagues, friends who are weapons experts in Russia - in-depth research on world weapons.

'They like copper arrows very much because the aerodynamic shape makes the arrows work very well. The men had already calculated the weight put on the front of the arrow so that it could charge quickly. I also can't explain why our fathers are so smart, " Thanh said.

According to Thanh, the operating principle of this crossbow is very close to that of container missiles.It is a large rocket, containing small rockets inside.When flying down, the large rocket splits, the small rocket continues to fly.

Mr. Thanh had a rough estimate of the impact of the arrow force.Accordingly, the force of the arrow can reach very high, can even shoot through the apple, at a distance of about 500 m.This is also consistent with the legend of the magic crossbow that can cause unexpected, great damage.

Doctor of Physics Nguyen Van Khai, when Mr. Thanh introduced this invention, commented: "The principle of the invention implementation is not complicated but very intelligent. I have considered many kinds of magic crossbows of different countries. crossbow using the principle of inertia, the first time I see ".

Thanh hopes to give this invention to museums to serve the exact restoration of the legendary magic crossbow.