"This is ......" When the professional projector projected Lin Hongfei's "plan" onto the screen through a high-brightness projector, and saw Lin Hongfei's "plan", everyone was stunned: What kind of monster is this?

Yes, this is a drawing, to be precise, several drawings drawn on a piece of paper, three of which are three views of an airplane sketched with the simplest lines, and several are sketches that are close to the nature of a photo.

But that's not the point, the point is what's on this diagram.

First of all, it was supposed to be a helicopter, and the iconic propeller hubs and several rotors on the head indicated the cargo's identity: it was supposed to be a helicopter. Guo Jingshan, the chief designer of the Bingcheng Aircraft Factory, even immediately identified it through this picture, and this helicopter should be the front face of the Z-9 helicopter he built.

If everything is normal until now, then the next thing is to beat Lin Hongfei: in the lower part of the fuselage of Zhijiu, there is an extra wing that grows a little bit more than the rotors, and the wingspan is about thirteen or fourteen meters according to the proportion!

The wings are not short wings used to hang weapons pylons like the Mi-24 Hind gunship or the AH-64 Apache gunship, but rather a pair of sturdy pair of long, standard aircraft wings that resemble the wings of fixed-wing aircraft!

It can even be seen that this wing is not pretended, not only has a huge main wing, but also ailerons and flaps, and it is obvious that this configuration can not only adjust the horizontal pitch of the fuselage, but also provide considerable lift.

If it's just a pair of wings, it's just a big change. The original tail shaft was gone, replaced by something that looked somewhat similar to the ducted propeller of a submarine: a round duct, inside which was supposed to be a propeller, was he going to use this ducted propeller to balance the torque generated by the plane's rotors and propel the plane forward?

In addition to the fact that the original ducted tail rotor has become such a strange appearance, the water safety stabilizer that was slightly in front of the original ducted tail rotor has also been relocated and appears under the engine, which seems to be much larger than before, and even has two more maneuverable wing surfaces......

Can this monster fly to speeds of over 400 kilometers per hour? It's not that the bigwigs of the Standing Committee of the bureau have never seen an airplane, and they see that this plane is not like an airplane, and the helicopter is not like a helicopter monster. Immediately frowned!

But unlike the Standing Committee of the Bureau. Seeing Lin Hongfei's sketch, the aviation experts below frowned slightly and thought, and the next moment, their eyes suddenly lit up!

"Wonderful! Why didn't I think of that?! The first person who couldn't help but speak was Mr. Guo Jingshan, the chief designer of Zhijiu, and he even directly forgot that he was in Ouchi at the moment. There were also several bigwigs of the Standing Committee of the Bureau sitting in the conference room, and they asked Lin Hongfei excitedly. "Comrade Kobayashi. I think your ducted tail rotor is not just a tail rotor, right? ”

"Well, this is a ducted propeller with vector thrust capability." Lin Hongfei nodded and said.

The so-called vector thrust, to put it simply, is similar to the air conditioning outlet of a car. We can adjust the direction of the air outlet according to our preferences and comfort, but the direction of the air outlet of the automobile air conditioner is manually adjusted by ourselves, and this ducted propulsion propeller relies on mechanical control of the tilt of the duct at a certain angle to make the thrust produce a certain deflection, and then adjust the flight attitude of the aircraft: whether it is up or down. Whether to turn left or right.

"Yes, yes, you need to have vector thrust," Guo Jingshan nodded again and again, the more he looked at it, the happier he became, and even danced excitedly, "With this wing to provide lift, the burden on the engine can be reduced, and at the same time, the stall of the main rotor blade is no longer a problem; The ducted thruster can replace the conventional helicopter tail rotor, which can not only generate horizontal thrust, but also form reverse torque and steering control, thereby increasing the speed of the helicopter; In addition, the horizontal and vertical hinges used by the blades to flexibly connect the propeller hub in ordinary rotorcraft can also be canceled, and only the variable pitch hinges can be retained; ”

"Vector thrust ducted propeller combined with a lift wing, can make the helicopter have a higher flight speed and greater take-off weight, good design, really good design, such a structure, wings and rotors provide lift at the same time, by the vector thrust ducted propeller to provide thrust, the aircraft can indeed fly faster, in my opinion the flight speed of the aircraft can be increased by at least 50%! If you take off by taxi, the range can be extended by at least 1.5 times! Take off and land in the way of gliding, reach a cruising speed of 400 kilometers per hour, a flight distance of 2500 kilometers is indeed feasible, and the take-off distance of the glide will not exceed 100 meters, compared with the commonly used tail horizontal rotor, the vibration of this structure is smaller, the maintenance cost is also lower, and it is more rare to be able to improve directly on the basis of the existing helicopter, which is too convenient. ”

"However, this structure also has a big problem, that is, the rear vector thrust shouts that the weight of the propeller is very large, much larger than the weight of the tail rotor structure of the traditional helicopter, and it needs more power when hovering, but since it is used as a carrier platform for carrier-based early warning aircraft, the aircraft basically does not need to hover, so this problem is not a problem."

Many people have a misunderstanding of helicopters, thinking that helicopters take off and land in a vertical take-off and landing mode, but they don't know that in addition to the most common vertical take-off and landing, helicopters can also take off and land in a taxi-run way similar to the take-off and landing of fixed-wing aircraft...... Usually the helicopter taxi take-off distance is not too long, even if the American CH-53E "Super Stallion" heavy helicopter, if it takes off in a taxi, it is only a 120-meter taxi distance.

The helicopter takes off and lands in a taxi-run way, which can not only allow the aircraft to carry more load, but also fly farther, the most famous of which is the Mi-24 "Hind" helicopter gunship, because the engine power is insufficient, the fully loaded Mi-24 can not take off vertically in some specific circumstances, and it needs to use the front wheel to run on the ground for a while before it can take off, the reason why the helicopter takes off vertically in most cases is because everyone likes the vertical take-off and landing ability of the helicopter: if you need to run and take off, So what are you doing with helicopters? How trouble-free is it to use a fixed-wing aircraft directly? Not only does it load more, but it also flies fast.

But the aircraft carrier is a very special use environment, on

Lin Hongfei finally breathed a sigh of relief: since these experts agree with this plan, then he is relieved!

He also had to sigh that an expert is an expert, and his insight was really to the point, and he could see the advantages and disadvantages of Lin Hongfei's "original" design at a glance.

But also, this is a well-known high-speed helicopter scheme in later generations, how can it not work? Everyone is an expert, and you can see it at a glance if you can do it or not...... The only thing he was worried about before was that the plane was too unusual for everyone to accept, but now it seems that he was too careful.

Yes, Boss Lin drew the straight-nine version of the X-49A "Speed Hawk" super-high-speed helicopter, an advanced composite helicopter jointly developed by the US Naval Air Command piasecki company on the basis of the UH-60 "Black Hawk" helicopter after 2000.

Guo Jingshan's words, listening to a kind of experts nodded again and again, with a look of approval, but as a top expert in the aviation industry, whether this plan is feasible can be seen at a glance, the only problem is that they did not think that it could be designed like this before.

Well? So this weird-looking plane can really fly at a speed of more than 400 kilometers? Looking at the excited and crazy Guo Jingshan, and then at the experts who were excited and red-faced, the Standing Committee of the Bureau who was just about to reprimand Lin Hongfei was stunned for a moment, and took a closer look at this strange thing on the projection screen: Well, although it is a lot more pleasing to the eye, it sounds like it is flying very fast, but this cargo can be used as an early warning aircraft on the aircraft carrier?

The next moment, as if it was what the leaders of Zhilu Dao were thinking, this question was asked by Li Zaijian, the chief designer of Changfei Group's Zhi8, "Comrade Xiaolin, your idea is very good, it has a high feasibility, although there are many details that still need to be calculated in detail and wind tunnel tests, but the general idea is correct, after Zhijiu is so improved according to this, the speed of the aircraft can indeed be increased by at least 50%, but this is not enough to bear the heavy responsibility of the aircraft carrier early warning platform aircraft, right?" ”

As soon as Li Zaijian's words came out, the conference room, which had just been lively and everyone was discussing non-stop, suddenly quieted down: That's right, this plan can indeed make Zhijiu fly faster and farther, but the task of undertaking the aircraft carrier-based early warning aircraft platform is far from enough, right?

Guo Jingshan didn't care so much, everyone's questions were thrown out of the clouds by him, Lin Hongfei's idea opened a new window for him, and Guo Jingshan, who was completely immersed in his own world, was already beginning to wonder in his heart, if Zhijiu also changed like this, would it be very attractive to the army?

Well, after such an improvement, the combat radius of the aircraft will be increased from 300 kilometers to at least 700 kilometers, and the Zhijiu, which could only perform theater missions before, can immediately perform 700 kilometers of in-depth combat missions, and if it is a rescue mission, it can even have a combat radius of up to 800 kilometers...... What a treasure! (To be continued......)