At the same time as this is going on, Jiang Chen is also participating in a project under the service company. As I mentioned earlier, a project between the engine lab and the fabric lab, powered paragliding. Paramotor, also known as powered paragliding, is a type of flying paraglider, the full name of which is powered paragliding. It is a kind of personal recreational aircraft, which originated in Europe in the 70s and was introduced to China at the end of the 80s. It is mainly composed of two parts: paragliding and engine, and is one of the most popular extreme sports in the world. Jiang Chen just mentioned it casually at first, but he didn't expect that the researchers on both sides would be interested, and then they began to actively study and experiment.

Paramotor is derived from the English Paragliding (paragliding) and motor (motorcycle). As the name suggests, a paramotor is a paraglider with a power unit. In 1978, the French mountaineer Mr. Beyden invented paragliding, which made the dream of human beings soaring into the blue sky come true. However, paragliding still has its shortcomings and defects, the most important point is that it cannot take off and land freely on flat ground, and take-off is restricted by hillside conditions, which makes flying enthusiasts feel uncomfortable in areas without mountain peaks. In 1984, a group of French paragliding enthusiasts full of romance and fantasy added a small engine to the paraglider, which was actually the engine removed from the motorcycle. Then, the thrust of the propeller driven by the engine and the lift of the paraglider wing were used to successfully solve the problem of "free take-off and landing" that had plagued everyone for a long time. The purpose of allowing it to fly higher, farther, and stay in the air for longer periods of time was created, thus creating this new aviation sport.

In real life, this was only invented a year later in 1984, but here in Jiang Chen, he was submitted to Goldfinger. His aim is to seize the high ground in this field and then build the number one brand in this area. In fact, there are still many functions, not only for personal extreme sports, but also for economic, scientific, social and military purposes.

This economic role is mainly an eye-catching advertising effect. In the past, before holding various large-scale events, I wanted to invite various air show teams to perform, although this is more exciting and spectacular, but its cost is very large, and it is affected by the venue and time climate, and there are many unsafe factors. For example, the plane participating in the performance caused a mechanical failure or operation error, which caused the plane to crash or rush directly into the crowd of spectators, resulting in a tragedy. And this powered paraglider can save a lot of work in this area, it is not only cheap, but also easy and safe to operate, and has a great guarantee for the safety of the activity. And it's important to note that it's very quiet, and it basically has no effect on people on the ground. Unlike airplanes, every time you pass by, you make a screeching noise. Thus causing discomfort to the person. There is also his slow flight speed and time in the air, which gives people a lot of ornamentation and influence.

This scientific research work is mainly in the monitoring and mapping of the ground. The power paraglider is light in weight and easy to carry, and it is not limited by the take-off and landing site, so it is very suitable for scientific research teams to map or monitor in the field or other areas. And its price cost is very low, which can reduce the financial pressure on the entire scientific research team, and because he is in the air. Therefore, it can monitor or map an area more quickly and intuitively, which brings great convenience to scientific research work.

This social use. Mainly in the various service functions. The most representative is the ability to quickly inspect the disaster situation after a disaster. In the aftermath of some disasters, infrastructure has been damaged, roads have been blocked, landslides have occurred, and some airports may also be damaged. As a very light flying machine, the powered paraglider can quickly deploy the front line of the disaster area. An area is then inspected. Then let the relevant disaster relief departments quickly understand the actual situation, make adequate preparations for the next step of the work or give their targeted opinions on the area to guide the disaster relief work. In fact, there are many other such uses, such as fire prevention in forest areas, as well as inspection of power or communication lines. All can be done by powered paragliding.

The last military use is also what Jiang Chen values more. This power paraglider is actually divided into two types, one is to carry the power unit behind the person, which is usually a single person, and the other is to sit on a simple steel tube flight frame and glide over and take off, and its power plant is behind the aircraft. This kind of powered paraglider can be used for a large purpose, not only can it carry another person, but also other materials or weapons and devices. Later, the armies of many countries introduced this kind of powered paraglider to equip their special forces or elite troops. Due to its small weight, this kind of umbrella is easy to carry, and the size is relatively small, and it can fly close to the ground in complex terrain conditions, which can effectively avoid being discovered by the enemy's Leidan. And it is very quiet (compared to an airplane, it is very quiet), and it is also possible to turn off the engine and pass silently by the paraglider immediately above. ), allowing it to pass silently through enemy blockades. Another point is that it is not limited by the take-off and landing sites, and can be used under their own conditions, which provides great convenience for reconnaissance or special forces or special agents who are fighting behind enemy lines or under complex conditions.

It's easy to say, but it's actually very difficult to develop. First of all, there is the fabric of the paraglider's umbrella, which cannot be solved. Don't look at it as a piece of fabric, in fact, its technology content is very high. This is not something that ordinary cloth can do, he has to take into account the weight of the fabric itself, if it is too heavy, it will be difficult to be lifted by the wind. The second is to make it as light as possible while maintaining its strength and tear resistance. You must know that after the power paraglider flies into the sky, the weight of people and equipment is provided by this umbrella, if the umbrella is not strong enough, resulting in the umbrella surface tearing apart, it will cause the tragedy of the plane crash and death. The flight altitude of this paramotor is so low that you simply don't have time to throw your parachute to survive, because you have already landed before the parachute is opened. Then, the colleagues who make sure it is light should ensure that the umbrella is rideable. The reason why the umbrella can bear the weight of a person is because of the increased air resistance on its umbrella surface, because the size of the air resistance is proportional to the square of the speed of the object, so with the acceleration of the human umbrella, the air resistance of the human umbrella is also increasing all the time. Finally, when the magnitude of air resistance is equal to the magnitude of gravity, the force of the parachute is balanced. The parachute descends at a uniform speed.

In fact, this is also a balance to find the various characteristics of the fabric. The weaving of the cloth is made of warp and weft threads. The heavier the weight, the more warp and weft threads the fabric has, and the warp and weft threads themselves will be thicker. In this way, the gap between the warp and weft lines of the fabric will be smaller, so it will be more carrying. The need for light fabrics means that they are sparsely braided, which increases the number of threads in it, reducing the strength of the fabric. And because the gap is relatively large, the driving performance is relatively poor. So although it is a piece of fabric, its technology content is still very high. (To be continued......)