Yes, Lin Hongfei, who knows a little about aviation and likes to play with gliders, paramotors, delta wings and power delta wings, is interested in forward-swept wings.

Swept wing technique is of course a good thing, this and swept wing together with the concept of wing layout is very sad, in the swept wing has been carried forward for decades today, the forward swept wing has obvious advantages of the wing layout scheme is rarely applied, in Lin Hongfei's memory, there are only three aircraft with a swept wing layout in the world, one is the Junkers-287 jet bomber designed by the Germans during World War II, which is the product of the German madness of that era; One is that in the 80s, at the request of the US Air Force, the US aviation community built a forward-swept wing technology verification aircraft called "X-29A", but it seems that it was finally abandoned because the technical difficulty was too high, and as for the last one, it was the S-37 "Golden Eagle" technical verification machine that Lao Maozi made a few years later, and it is estimated that the S-37 "Golden Eagle" was still lying in the mind of a certain designer of the Sukhoi Design Bureau.

Compared with the mainstream straight wing and jet fighter jet fighters during World War I and World War II, the swept wing that was popular after it began to appear on the stage, almost contemporaneous with the swept wing proposed many advantages of the swept wing, but Lin Hongfei only looked at one point, that is, with the same wing area, the swept wing can provide up to 30% of the lift than the swept wing.

Of course, the forward-swept wing aircraft is not without shortcomings, the most fatal shortcoming is that the forward-swept wing is easy to break the wing at the critical speed, but in Lin Hongfei's opinion, this is not a shortcoming for himself, the reason is very simple, although I don't know what the critical speed of the forward-swept wing is, but since it is used in fighters, then the near-speed must be at least Mach 0.8 or more, right?

But now, knowing that the critical speed of the Junkers-287 is 650 kilometers per hour, Lin Hongfei is relieved. Although the fatal flaw does exist, it doesn't matter to you that the wing will break at such a high speed, and for an aircraft that flies at a speed of no more than 300 kilometers per hour, can this disadvantage still be considered a disadvantage?

As for the issue of structural strength, Lin Hongfei didn't plan to engage in high-strength, high-maneuverability, and high-speed military aircraft at the beginning, but he just wanted to build a forward-swept wing glider. Well, to be precise, a powered glider with a power system. If you think it's an airplane, it's not wrong.

It's really a crazy idea to let the glider play with the forward-swept wing, but Lin Hongfei also has his own way, that is, to build a remote-controlled forward-swept wing-powered glider with equal proportions of scale, which won't cost tens of thousands of dollars anyway. For those farmers who spend their own money to build airplanes, this money may be their life savings. But for Lin Hongfei. This amount of money is not even drizzle, as long as it can be proved that the forward-swept wing can indeed be used in powered gliders and various low-speed aircraft, and the technical skills to achieve are not difficult, he intends to play for real.

Naturally, since the speed is not fast, the biggest problem with the forward-swept wing: the structural strength has become less serious. Anyway, it's just to be a big toy with remote control, it's good to become it, it doesn't matter if it doesn't work, Lin Hongfei is playing with such a mentality...... That's right. Lin Hongfei is just playing, as for the various data calculations of this toy, Lin Hongfei does not mind spending an additional $1,000 on his trip to Russia, in addition, he does not expect the results to come out in a month or two, patience is never lacking for an engine designer.

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"Mr. Lin, hello," Lin Hongfei just got off the plane, and the director of the Minsk Tractor Heavy Industry Complex, Kristabovich, who had already received the notice from the Guqi Provincial Industrial Manufacturing Co., Ltd., held up his huge belly, and shook Lin Hongfei's hands desperately with a bright smile on his face, "I am the director of the Minsk Tractor Heavy Industry Complex, Kristabovich, on behalf of the Minsk Tractor Heavy Industry Complex, I warmly welcome Mr. Lin's arrival......"

Without waiting for the director of the Minsk Tractor Heavy Industry Complex, who had a red nose like wax, to finish speaking, this fat man with a full 200 pounds was squeezed aside by a fat man with at least 250 pounds, and a more flattering face appeared in front of Lin Hongfei, "Mr. Lin, hello, I am Alexander, the director of the Minsk Automobile Heavy Industry Complex. Salamaha, on behalf of the Minsk Automobile Heavy Industry Complex, I would like to welcome you with the warmest warmth, you are our most distinguished guest......"

Speaking kung fu, a typical Belarusian beauty with an incomparably warm smile on her face weaves a wreath made of beautiful flowers...... Let's just call it a wreath...... Hanging on Lin Hongfei's neck, looking at this wreath, Lin Hongfei immediately thought of the wreath that will only be used in a certain situation in China, Lin Hongfei's heart was suddenly uncomfortable, of course, although he was not very comfortable, he still enthusiastically responded to the director of the Minsk Automobile Heavy Industry Complex who dared to send him a "wreath", of course, he will not forget the director of the Minsk Tractor Heavy Industry Complex who was squeezed aside because of the disadvantage of weight, "Mr. Alexander, Thank you very much, Mr. Kristabovich, for welcoming me at the airport, and as a token of my gratitude to you, I have brought you a small gift that I hope you will enjoy. ”

As he spoke, Lin Hongfei nodded slightly to Cao Jun next to him, and Cao Jun immediately stepped forward and took out something similar to an invitation from his bag and handed it to Lin Hongfei.

Lin Hongfei smiled modestly and handed Alexander two red books that resembled large invitations. Sahamara and Kristabovich said in a customary tone peculiar to the Chinese, "A small gift is not a tribute, it is a little meeting gift." ”

Fortunately, the level of translation is good, and it barely makes Lin Hongfei's words more "tactful".

Westerners, especially Belarus, who are now poor and almost underpants, have no subtle tradition, and the gift of opening in front of the guest is a sign of respect, Alexander. Sahamara and Kristabovich are not some of the dirt buns that have not seen the world, and they know that this big red thing with gold dust on the gilded edge is actually a gift list, and a trace of expectation and greed immediately flashed in their eyes, and when they opened the gift list, the whole person was dumbfounded: 1 ton of wheat refined flour, butter, condensed milk, baconed meat, spirits, all kinds of canned food...... All of them are the most scarce things in Belarus right now: food, clothes, shoes, hats and medicines!

In terms of the purchase price in China, it is about 5,000 RMB, but if it is in Belarus now, even if it is calculated in the strongest dollar, it is a wealth of no less than 50,000 US dollars!

In addition, Lin Hongfei even put a little bit of American souvenir on the gift list: 2,000 US dollars.

The current shortage of materials in Belarus is unimaginable, even if you really take 5,000 dollars, you will never be able to buy so many things, otherwise how can there be starvation in Belarus at this time?

How difficult is poor Belarus now? For example, the current Russians are only poor and drink porridge, so the current Belarusians are also poor and drink porridge, the difference is that Russians can always see some rice in the porridge, but Belarusians probably can't see rice in the porridge bowl, and those who are lucky can probably see one or two grains, just like now, Lin Hongfei heard that the Belarusian beauty who had just hung a "wreath" around her neck seemed to have a slight abdominal sound, obviously hungry...... Probably only when you are hungry can you be hungry for such a slender figure.

Compared with Russia, Ukraine, which are the traditional military and industrial powers staring at by countless foreign consortia and large companies, and compared with the five Central Asian countries that are rich in resources and have an important strategic position, the status of Belarus is really too sad. Europe and Americans are not without their own heavy military wheeled off-road transporters, so naturally they will not put their own good things and do not come to use stupid and coarse things, to put it bluntly, they are not even qualified to be poached by European and American enterprises.

At this moment, the extreme ecstasy even made their heads stunned: they thought that Lin Hongfei's gift to them should not be cheap, but they didn't expect it to be so cheap.

What a fortune this is in Belarus, where there is not even enough to eat!

He just stuffed 100 dollars to the Belarusian beauty who dared to give him a "wreath", and immediately the extremely surprised Belarusian beauty stuffed a small note into the palm of his hand, as for the content of the note, a fool can also imagine.

"Mr. Lin, this ...... These things are valuable, aren't they? "Alexander. Sahamaraa was the first to react, and greedily glanced at the luxurious private business plane behind Lin Hongfei, as if he wanted to dig something from it, and said to Lin Hongfei embarrassedly.

"It's just a small gift, it's nothing," Lin Hongfei waved his hand, turned around and pointed to his plane, with an apologetic expression, "I brought some on it, but I believe the two of you also know that this plane can't bring too much, so there will be an international flight tomorrow to bring things over." ”

Alexander. Sahamara and Kristabovich glanced at each other, and the tension in their eyes was gone, replaced by incomparable fanaticism: Now we are going to make a big profit! (To be continued.) )