The price of five million is not expensive, after all, the East later purchased the Air Fighter airborne radar system from the British, a total of eight sets, and spent 66 million US dollars, equivalent to more than 8 million US dollars, the British Yankee's radar system is not as advanced as the United States, but now it is only 88 years, considering the various factors of the depreciation of the US dollar, this radar system should be regarded as a conscience price.

If you negotiate cooperation with the other party's radar supplier and take the formal way, it is absolutely impossible to sell it for such a small amount of money! Facts have proved that not only Lao Maozi will make money by selling arms privately, but the Yankees are no exception.

Just look at the country of rest, and if you can continue to maintain the operation of the Tomcat fighter, it is absolutely indispensable to think about parts from the United States. I don't know how many people have filled their pockets.

"Okay, then we're done." Qin Feng said: "We will produce steel ropes for you as soon as possible, and when we complete your order and ship transportation, we hope to get these radar equipment urgently needed by the customs, and as for the purchase funds, we will also raise them for you as soon as possible, and then transfer them to you in the name of donation." ”

A yard is a yard, and the money they have to buy a steel cable and the money to buy radar equipment can't be mixed together, otherwise the money won't go into their pockets.

Now, hearing Qin Feng's words, the other party nodded again and again: "Okay, Mr. Qin, then it's decided!" ”

After sending the Americans away, Qin Feng rushed to the Yellow Building of the Princess Tomb again, Liu Lao Ri took care of everything, but he didn't see it this time, but he just saw Leader Zhang.

Hearing Qin Feng's introduction, Leader Zhang stood up and walked around the ground excitedly.

"Okay, Mr. Qin, you are really amazing! Six sets of P-3C radars are enough for us to use, no, we can completely modify four Y-8s, and the remaining two sets are used as prototype imitations! You have done a great job for our navy! ”

"Well, a total of 30 million dollars, I hope the Navy can raise funds during this time." Qin Feng said: "Also, after the modification is completed, even if it enters the sequence of naval aviation, I hope to spray the words of Oriental Customs on the outside of the aircraft." After all, we have to respect the Americans. ”

"No problem, of course!" Leader Zhang nodded: "We will come according to your requirements!" ”

Thinking of what kind of military exercises will be held in the future, and the anti-smuggling planes that will be mixed into the customs in the fleet, how can I think about that scene, how can I make people feel a little ridiculous.

"Okay, then I'll go." Qin Feng was afraid that the navy leaders would ask him something more, he was not omnipotent, if the navy leaders asked him to bring an Aegis warship over, then he would be blind.

"Wait!"

Qin Feng was about to turn his head and flash, and when he heard Leader Zhang's words, he could only stop and squeeze out a smile: "Leader Zhang, what else do you command?" ”

"I heard you want to make a three-jumper flying in the air." Leader Zhang said: "Let's help inquire, Capital University of Aeronautics and Astronautics has been manufacturing ultralight aircraft all these years, you may be able to learn from it, I have already said hello to you, you can go to Professor Hu at any time." ”

"Okay." Qin Feng breathed a sigh of relief.

Capital University of Aeronautics and Astronautics is the highest institution of aviation in China, and has cultivated a large number of aerospace talents.

This university has not only trained a large number of talents, but also engaged in scientific research and even some production, and the Bee light aircraft is one of them.

The design of large aircraft is complex and requires a large amount of money, and universities cannot support this kind of project, while the development of light aircraft is simple and low-cost, so it has become the best object for their hands-on practice, just like some farmers in later generations to build airplanes in their own homes, it does not cost much, it is a hobby.

In the late 70s, Professor Hu Jizhong of Capital University of Aeronautics and Astronautics decided to launch an ultra-light paraglider, when he was just in his early thirties, using the dormitory as a design studio and the production workshop of the fifth series of Beihang as a manufacturing plant, and the first Bee 1 flew into the sky.

They continued to develop Bee 2 and Bee 3, and just like that, the whole bee family grew.

Especially the Bee No. 3, this kind of plane can not only seat two people, but also carry pesticides, spray in the sky, after manufacturing, Henan Xinxiang immediately funded the village to buy one, the news was reported, and the farmers are also going to the sky! As a result, there was an aviation boom in China, and all 50 Bee 3 produced by Capital University of Aeronautics and Astronautics were sold.

Of course, this is also inseparable from the price, after all, a Bee No. 3 is only 35,000 yuan, although this era is very rare, but after all, there are still a group of people who are rich first, they can buy a plane to play, that is quite popular, an imported motorcycle is also 20,000 or 30,000 yuan, how can it be compared to a plane.

Now, they are developing a facelift of the Bee 3 aircraft, that is, the Bee 3, after Qin Feng came to the university, he inquired about Professor Hu's location, and went straight to the production workshop of the fifth department of Beihang University.

The workshop is not very big, but although the sparrow is small, there are all kinds of equipment, when Qin Feng came in, many people are using thin-walled steel pipes to make the skeleton of the cockpit, although aluminum alloy is more suitable, but it can only be used in key stressed parts such as tail support, after all, the material is very expensive.

A group of energetic college students are busy with them, since they came to study at Capital University of Aeronautics and Astronautics, they are here to build airplanes, and they can get in touch with airplanes in advance at school, and they are very excited.

Among these people, an old professor in his fifties is busy and instructing students.

He is of medium build, wears a pair of black-rimmed glasses, and looks radiant. He is none other than Professor Hu, the designer of the Bee aircraft.

"Students, we take the state subsidy and eat the food grown by the people, we must do something for the people, we must make sure that new achievements come out every year, in order to be worthy of the country and the people!"

"Teacher, I think the most important thing for us at present is to complete the localization of the engine!" A young male student spoke.

"Yes, it's not just an aero engine, the Austrians can do it, and we can do it too!" A female student said: "If we can complete the localization of this engine, then the price of our aircraft can be reduced by 5,000 or even 10,000." We can make light planes cheaper for the people! ”

The Bee 3 aircraft was designed by them, its structure is simple, the lower part is the open-top cockpit, the layout of two or three crew members in the front and rear, and it is also the whole aircraft, the top is a light metal skeleton and cloth skin, and the back is the tail brace, connected to the normal tail, where is the engine? Just behind the cockpit, under the wings, this is also a layout that only ultralight aircraft have.

The Bee 3C uses an Austrian Rotax 447 engine with a power of 31.3 kilowatts, or 42.6 horsepower, which is quite good for an ultralight aircraft.

"Yes, if we can complete the localization of the engine, of course we can make the price of the aircraft cheaper, but the engine has always been our weakness." Professor Hu pushed his glasses: "Students, we know that the engine is the heart of the aircraft, and it must ensure a high enough reliability, and although our Capital University of Aeronautics and Astronautics also has an aero engine major, it is all about turbines, and our ultralight aircraft uses piston engines, which is really not our strong point." ”

What kind of aircraft will use a piston engine, except for an ultralight aircraft like him? Don't look at the propellers in the front, there are also turbines in the back, those small sports planes in the United States are like this.

There are very few aviation piston engines in need of the world, and there are few related enterprises, the best choice is Rotax-Werkag, which is a company founded in Dresden, Germany in 1920, moved to Wiers, Austria in 1943, and began to produce automobile engines at first, and later began to produce aviation piston engines, but even so, it did not exist independently for long, and was acquired by Bombardier in 1970.

The company mainly produces light piston engines for aviation, ranging from 32 hp to 115 hp, because it started with automobile engines, so the 447 and 582 series were still in-line cylinders, and it was not until the 912 and 914 series that the horizontal opposed four cylinders were used, the latter being the most powerful.

There is no suitable engine in China, and there is no technology for self-research and development, so it can only be purchased.

"We're working on a horizontally opposed engine with a planned output of 60 hp and an air-cooled four-stroke, are you interested?" A voice rang out.

And they all looked over and saw a man of the same youth, and if they had not spoken, they would have thought that he was one of them.

"Mr. Qin?" Professor Hu thought of the greeting that the navy leaders had called, and asked tentatively, "Are you President Qin of the Pacific Group?" ”

Mr. Qin!

The college students on the side had their eyes wide open.

This is a man full of aura!

Senior student, in fact, it is not yet the time to graduate, but since last year, Mr. Qin has been starting his own business, and now, Pacific Group has become a dazzling existence! It has a shoe factory, an instant noodle factory, a motorcycle factory, a large steel mill is being built, and an 80,000-ton die forging press is being built!

College students are very impressed by such a person who has risen from their side, I don't know how many people regard Qin Feng as an idol, they are also college students, look at Qin Zong!

"You're Professor Hu, right? Just call me Xiao Qin or Xiao Feng. Qin Feng said: "Professor Hu, can the engine of our motorcycle be used in your aircraft?" ”

In later generations, a large group of enthusiasts who built airplanes in their own homes could not buy professional aero engines, so they used motorcycle engines instead, but the kind of small-displacement motorcycle engines definitely did not work, after all, the power was too low to fly, at least more than 500cc, and later Loncin made a 650cc engine, and when it was developed, it became the predetermined power of a certain aircraft.

At this time, hearing Qin Feng's question, Professor Hu nodded: "Of course you can, as long as the volume and weight are small, the power is high, and the fuel consumption is low, of course it is no problem to use it on the aircraft, and the power of sixty horsepower will not be excessive, we plan to remodel the Bee No. 3 into a three-person model, and we are worried that there is no suitable engine, if you can develop this kind of engine, it is just right for us!" ”

Although it is called an ultralight aircraft, it must be getting bigger and bigger, and the original bee can only seat one person, but now it can seat two people, but they also want to further develop it to reach three people!

In this case, it will require stronger power, and the engine that Qin Feng sent is simply a send-off in the snow.

"By the way, Mr. Qin, I heard from the navy, you want to engage in gyroplanes?"

"Yes, Professor Hu, we think that for an ultralight aircraft, the rotorcraft layout is more suitable than this parachute layout."

"Why?" Professor Hu frowned.

This kind of bee plane is his masterpiece, in the past ten years, he has been engaged in teaching, while engaged in scientific research, he is very busy, the development of bee aircraft is getting better and better, suddenly a layman came over, told him that the direction of research is wrong, there is better?

Professor Hu certainly can't accept it.

"The biggest advantage of the gyroplane is that the flying conditions are more generous, especially in crosswind weather, the gyroplane is far more adaptable than the average light aircraft."

Light aircraft are very small, so the purchase price is cheap, in addition to realizing some people's dream of flying, you can also carry out operations such as spraying pesticides, but, because it is light, so the meteorological requirements are very high, if there is a crosswind, then ordinary light aircraft are easy to encounter danger, so, once there is wind, light aircraft can not go to the sky.

The gyroplane is different, it does not have a huge wing, its lift is generated by the rotor at the top, which is far more resistant to wind than the cloth wing, so it can fly with fewer meteorological restrictions.

"At the same time, since the lift is generated by the rotors, it does not stall." Qin Feng continued to introduce.

The lift of the aircraft is generated by the difference between the upper and lower airflow of the wings, which requires the wings to have a certain speed, when the speed is too low, the aircraft will stall, however, the gyroplane will not, although its rotor has no power, it is similar to a helicopter, even if the speed of the aircraft in the sky is zero, it will rotate in the landing, acting as a parachute, and the safety is very high.

Professor Hu thought about it seriously.

"Mr. Qin is right!"

"Mr. Qin, you want to build a gyroplane?"

Professor Hu was still pondering, and a group of college students under his command became excited.

Last year, the Pacific Group conducted a recruitment activity at the Capital University, and many college students signed up to participate, and those college students have become the backbone of the Pacific Group, among which the most bullish Wang Fang has become the actual person in charge of the Pacific Iron and Steel Plant!

This kind of development prospect is better than many jobs assigned after graduation!

After graduation, they will inevitably enter various scientific research institutes in China, but after entering, there must be many cattle people guiding the work.

They want bigger development!

"Yes." Qin Feng said: "Our Pacific Group is preparing to set up an aircraft company, which will start with gyroplanes, and after that, we will focus on unmanned aerial vehicles, especially quadcopter drones." ”

Quadcopter drone? As soon as this sentence came out, Professor Hu immediately gave up his contemplation just now and opened his eyes wide: "Mr. Qin, what do you mean by the four axes?" ”

Ordinary helicopters are equivalent to a single axis, with a large plate at the top, although there is still behind the buttocks, but the rotor installed on the side is used to balance the reaction force of the large plate at the top, after all, when the large plate is rotating, it will also make the fuselage have a tendency to rotate in the opposite direction, if the rotor at the tail of the helicopter is hit, you can see the fuselage rotating and landing, which is the result of not being able to balance the rotational torque.

So, helicopter designers came up with a special coaxial reversal helicopter again, with no rotors behind the butt and two large plates at the top, one forward and one reversed, so that the rotational moment is automatically balanced.

In the whole world, only the Karimov Design Bureau of Lao Maozi has played this helicopter to perfection, in addition to this, there are also American CH-47 helicopters, with a large plate in the front and rear, all overhead, these can be called bicopter helicopters.

This is already the maximum, four axles, that is, four rotors, what kind of aircraft is this?

"The main body of this aircraft is a flat structure, with a cross, and at each tip of this cross, there is an engine and a propeller, so that it forms a unique four-axle structure." Looking at the thirsty appearance of these students of Capital University of Aeronautics and Astronautics, Qin Feng immediately introduced them.

Quadcopter drones, the most common civilian drones in later generations! But now, no one has heard of it!

"Mr. Qin, with a drone with this layout, vertical take-off and landing is no problem, but how to fly horizontally?" Professor Hu frowned.

The horizontal flight of the helicopter is achieved by the special periodic torque conversion system of the top propeller, in simple terms, the rotor of the helicopter is a seesaw, which can rotate back and forth, so that the rotor can not only remain parallel to the fuselage, but also tilt forward, so that the rotor not only provides downward lift, but also provides forward power. Therefore, when the helicopter flies forward, the nose of the helicopter will be tilted downwards because the large plate at the top is tilting forward and downward.

And what about this quadcopter drone? Each of the four vertices of the cross has a propeller, how does the plane move forward and backward, turn left and right? Does it also rely on a periodic torque conversion system? That's not your usual complexity.

Qin Feng smiled, this is the essence of the quadcopter drone!

"Ahem, Professor Hu, this is a bit complicated, is there a blackboard? I've got to draw a picture for the big guys. ”

Qin Feng hasn't graduated from college yet, and he is not studying aviation, but now, he is going to give lessons to these aviation students and even teachers!

"Go to our workshop office, there's a blackboard there." Professor Hu said.