Start with the aviation industry

Chapter 225 Heavy Armed Helicopter

Leihuo Aviation Engine Design Institute was very efficient, and quickly produced the design technical outline of the LH2000 turboshaft engine. Lin Feng thought the design technical outline was good, and only mentioned a few areas that needed to be revised and improved.

The Leihuo Helicopter Design Institute was not slow, only about a week late. After all, they started a few days later, and the design of the armed helicopter was far more complicated than that of the turboshaft engine.

Zhao Mingzhi knocked on the door of Lin Feng's office with the newly released design and technical outline of the heavy-duty armed helicopter.

"boss!"

Lin Feng was looking at the latest financial statement. The payment for the LH1500 turboshaft engine ordered by the military has been fully paid, and the financial status of Leihuo Technology Industry Group is good.

Seeing Zhao Mingzhi coming in, and especially what he was holding, Lin Feng said with satisfaction, "You guys have come up with the design technical outline so quickly."

"Boss, please correct me."

Zhao Mingzhi respectfully placed the design technical outline on Lin Feng's big desk, and Lin Feng picked it up and carefully flipped through it.

Generally speaking, the design and development of an armed helicopter must first conduct a design feasibility analysis, that is to say, it is necessary to analyze the domestic industrial level, technological level, etc., to see if this helicopter can be developed.

If the conditions are not met, there are only two possibilities, either to lower the standard, or to shelve the design and development for the time being.

There is no such situation in Leihuo Technology Industry Group. Lin Feng instructed that direct research and development does not need to consider the actual situation of the domestic aviation industry level and technological level too much. Before compiling this design technical outline, Lin Feng also asked Zhao Mingzhi and Li Guangshu talked about the design of this heavy armed helicopter.

Lin Feng is very satisfied with this design technical outline, which basically completely runs through what he said.

The specific parameters of this heavy armed helicopter are as follows:

Crew: 2 people

Empty weight: 6870 kg
Maximum take-off weight: 13750 kg
Maximum flying speed: 385 km/h
Transit voyage: 2500 kilometers
Combat radius: 600 kilometers
Practical ceiling: 6800 meters

Structure layout:

It adopts a twin-rotor coaxial layout, and two turboshaft engines are installed above the short wings on both sides of the fuselage.The retractable tricycle landing gear is adopted.Various weapons can be hung under the short wings on both sides of the fuselage. The tandem cockpit layout has two cockpits, one in front and one in back.

The blade tip is swept back 30 degrees, which is beneficial to increase the critical Mach number of the tip and reduce the loss caused by the shock wave.The blade adopts double-cavity girder, which has good torsional rigidity and strong bullet resistance.The hingeless propeller stage is adopted, and its center is a high-strength titanium alloy forging, which is connected to the root of the propeller by a metal tensile torsion member.

The rotor can resist 12.7mm bullet damage, even if it is hit by a 12.7mm bullet, it can still keep the helicopter flying normally.The layout of the twin-rotor helicopter helps to reduce the overall size of the helicopter and make the body structure more compact.This also improves safety when flying close to the ground as it has no tail rotor.

The power plant uses two LH2000 turboshaft engines, each with a rated output power of 2087 kilowatts.The positions of the two engines are far apart, which reduces the possibility of the two engines being shot and wounded by the opponent at the same time, thereby improving survivability.The air intake is equipped with a sand and dust prevention device.The exhaust port is equipped with an infrared suppressor to reduce the infrared radiation level of the engine.

Weapon System:

There is a short wing on each side of the fuselage, and each short wing has three hardpoints. Each hardpoint can mount a rocket launcher or a quadruple missile launcher for anti-tank missiles.

A 30mm single-barreled chain gun is installed under the nose of the aircraft. The turret has a swing range of 120 degrees left and right and 2000 rounds of ammunition.

Avionics system:

There are world-class observation/fire control systems, pilot night vision systems, laser rangefinders and calibration instruments, forward-looking infrared systems, gunner-specific optical direct sights, daytime TV cameras, and laser calibration instruments, etc., making this aircraft It has all-weather combat capability.

Generally speaking, this aircraft completely surpasses well-known armed helicopters such as the Longbow Apache and Ka 52 in terms of ammunition load, range, reliability, etc., as well as technical content and advancement.

In particular, it has an avionics system designed and developed by the system, whose performance and functions far exceed those of other armed helicopters. It also has anti-tank missiles developed by the system, which can hit accurately, hit far, respond quickly, and are powerful.

Each heavy gunship has six hardpoints, while the Longbow Apache, Ka50, etc. have only four hardpoints.

Six hanging points can hang six rocket launchers, or six missile launchers, a total of 24 missiles, which are much larger than ordinary armed helicopters, and even the single-barreled chain gun has 2000 rounds of ammunition , while the longbow Apache has only 1200 rounds.

After closing the design technical outline, Lin Feng said with satisfaction, "Yes, basically there is no need for major revisions, especially since you have also considered the compatibility of weapons and can hang a variety of missiles.

Lin Feng has already seen it. In addition to the missiles designed and developed by the system, other kinds of domestic missiles can also be suspended. However, the performance of the current domestic missiles is far from that of the missiles designed and developed by the system. One is the world's top level , one can only be regarded as a quasi-first-class level in the world, or a second-rate level.

What kind of missiles this armed helicopter will hang in the future is up to the user to decide. Anyway, the compatibility of the weapons is very strong, and even Leihuo Technology Industrial Group is not in a hurry to design and manufacture the missiles designed and developed by the system, because this It will also consume a lot of manpower and material resources.

For the 30mm chain gun, rockets and rocket launchers, anti-tank missiles and other weapons needed by the helicopter, Leihuo Technology and Industry Group can temporarily not design and develop them. The key point is to develop and manufacture this armed helicopter first.

If you don't have these weapons, then install domestic ones for the time being, or wait until the prototype of this helicopter is manufactured, and then consider designing and developing these weapons, it will not be too late.

"Well, yes, there is basically no need to modify and improve, just follow this design technical outline to carry out the design and development of this armed helicopter."

After receiving the technical outline, Zhao Mingzhi felt relieved, "Boss, then I will go back and immediately lead the technical team to start the design and development of this armed helicopter."

Lin Feng said, "Go ahead, I will come over to give guidance when I have time. In addition, I will draw out some key design drawings, including some general design drawings."

Immediately, Zhao Mingzhi felt a little expectation in his heart. The boss's guidance and some general design drawings are very important to them.

After watching Zhao Mingzhi leave, Lin Feng thought in his heart that he doesn't need to draw the design drawings for the LH2000 turboshaft engine himself, but just guide him during the design process, because there is the LH1500 turboshaft engine there.

Not this gunship.

This is not only the world's top heavy-duty armed helicopter, but also the first time for the technical team of Leihuo Helicopter Design Institute to engage in the design and development of armed helicopters, without any experience and technology accumulation before.

Lin Feng must draw some important design drawings. If time is sufficient, draw as many design drawings as possible. The more design drawings Lin Feng draws, the stronger the guidance will be, and the difficulty of everyone's design will be reduced. .

Just do it.

In a corner of the office, a large table and a chair have been set up according to Lin Feng's instructions, and there is no shortage of drawing things.

Which design drawing should I draw first?

Lin Feng made a decision after a little contemplation. First draw the structural layout of the armed helicopter, including the layout of the cockpit, the layout of the coaxial inversion system, the layout of the engine, etc., all of which can be reflected in this design drawing.

Holding a T-square in one hand and a pencil in the other, Lin Feng drew the first line on this blank design drawing, and gradually entered the state, with more and more lines on the drawing.

After drawing for more than an hour at a stretch, Lin Feng stopped to take a rest and looked at the fruits of his labor.

Taking a sip of tea from a teacup, I thought to myself, if there is computer-aided drawing, the efficiency can definitely be improved several times. A design drawing that originally took one or two days to draw may take two to three hours.

Simply relying on manual drawing is really a physical job, and it is more efficient and slower.

Lin Feng thought in his heart, it is already the end of October 1992, is there any CAD in China, and can the entire Leihuo Technology Industry Group promote computer-aided drafting.

It's just that Lin Feng doesn't know much about the use of CAD in China, and he is usually busy with company affairs and basically doesn't pay attention to it. From what he knows, Phoenix Factory doesn't have it anyway, and other aviation companies don't seem to have it either.

In fact, my country's computer-aided drawing was in its infancy in the late 70s. Two-dimensional CAD drawing design was the earliest CAD technology used in my country. From the early 80s, CAD technology experienced "sixth five-year exploration", "seventh five-year technical research", Eighth Five-Year Popularization and Promotion” and “Ninth Five-Year Deepening Application” and other four stages.

During the "Seventh Five-Year Plan" period, the Ministry of Machinery Industry invested 8500 million yuan to organize several well-known domestic universities and related computer research institutes to develop CAD general support software. plan.

At this time, some domestic research institutes and enterprises have already begun to try to use CAD drawing, but the popularity rate is not high, but Lin Feng does not know about these situations.

After taking a few sips of tea, Lin Feng picked up the phone and called Fang Anping over, considering that there may already be CAD-assisted drawing applications in China.

Why was Fang Anping called here instead of Zhao Mingzhi? The main reason is that Fang Anping is much closer, and the Leihuo Helicopter Design Institute is right next to him.

Fang Anping arrived within a few minutes, "Boss, you are looking for me."

Lin Feng cut straight to the point, "I have a task for you, learn about the situation of CAD calculation-assisted drawing in China, if possible, we will also start to try to use CAD drawing, which is not only much more efficient, but also the design drawings drawn are more standardized and of high quality. better."

As an expert in aero-engine design, Fang Anping is of course no stranger to CAD, and has a certain understanding, so he immediately agreed, "Okay, I will go to understand it right away, and then report to you as soon as possible."

Soon, Fang Anping accepted this task and left. As for Lin Feng, before there was no computer-aided drawing, he could only pick up a pencil and continue drawing honestly.

in the office.

Zhong Zimin took the design technical outline of this heavy-duty armed helicopter and carefully read it again, looking like he couldn't put it down. He has read it at least five times since he got the copy of the design technical outline in the morning.

The more you look at it, the more excited you become, and the more you look at it, the more you like it!
Sure enough, it is the world's top-level heavy-duty armed helicopter. Mr. Lin and the others are not bragging at all. If such a heavy-duty armed helicopter can be developed, then we will immediately reach the forefront of the world in terms of armed helicopters.

Because he was so excited, he put down the copy of the design technical outline, and walked back and forth in the office for several minutes with his hands behind his back.

Then, he opened the large drawer of the desk, and took out the coloring book of this heavy-duty gunship from inside. After looking at it again and again, he moved the stool by himself, and nailed the coloring book to the wall with thumbtacks.

As a result, there are three color pictures lined up on the wall of his office, each of which is a large color picture, namely the color picture of the LH1500 turboshaft engine, the color picture of the transport helicopter, and the color picture of the heavy armed helicopter.

Fun!
Is there anything more enjoyable than looking at these coloring pictures every day!

Other people's offices are not hung with landscape paintings, but with calligraphy works posted. Only Zhong Zimin's office is different. There are colored pictures of aero engines or helicopters hanging, and they are all colored pictures of Leihuo Technology Industry Group's products.

"Boom, boom, boom!"

There was a knock on the door, and a young military representative walked in and reported, "Mr. Zhong, I have sorted out the things you asked for and printed them out."

After speaking, put this printed document on Zhong Zimin's desk.

"Oh, it's so fast, your efficiency is good, so I'll take a good look at it." After finishing speaking, he sat on the office chair, holding this document and looking at it with great interest.

This is the parameter data of the Longbow Apache. It is not difficult for the military to obtain these things. Some parameters are even semi-disclosed to the outside world.

There is also the parameter data of the Ka 50 armed helicopter. As for the Ka 52 armed helicopter, because it has not been installed on a large scale, it is only a successful design and development. Zhong Zimin did not ask to collect its parameter data.

While flipping through the parameters of the Longbow Apache and Ka-50, Zhong Zimin compared it with this heavy-duty armed helicopter from Leihuo Technology Industry Group.

Maximum take-off weight:
Longbow Apache: 10443 kg
Card 50 armed helicopter: 10800 kg
Leihuo Technology Industrial Group: 13750 kg
Maximum flight speed:

Longbow Apache: 350 km/h
Card 50 armed helicopter: 310 km/h
Leihuo Technology Industrial Group: 385 km/h
Maximum transit range:
Longbow Apache: 1100 km
Card 50 armed helicopter: 1900 kilometers
Leihuo Technology Industrial Group: 2500 kilometers
Weapon Hardpoints:
Longbow Apache: 4

Card 50 armed helicopter: 4

Leihuo Technology Industrial Group: 6

No matter in terms of tonnage, speed, range, bomb load, etc., or in terms of maneuverability, battlefield survivability, reliability, etc., this heavy-duty armed helicopter of Leihuo Technology Industry Group has completely crushed it.

Especially the avionics system, fire control system, and airborne radar are obviously at least half a grade higher than other armed helicopters, even more advanced than the Longbow Apache.

Large tonnage, flexible maneuverability, strong protection capability, fierce firepower, long-range vision, and accurate shooting are the characteristics of this heavy-duty armed helicopter.

Especially with the ability to see far, shoot accurately, and have strong firepower, Zhong Zimin is what a heavy-duty armed helicopter should look like. He said in his heart that he really looks forward to it being developed and deployed on a large scale sooner.

Zhong Zimin picked up the phone on his desk and said loudly, "Xiao Zhao, book the nearest ticket, I'm going to the capital."

He didn't want to wait any longer, and was going to take a copy of this design technical outline and a color picture of this heavy-duty armed helicopter, and go to the capital to make a comprehensive report to the leaders above, and tell them this exciting news. Great news.

Not to mention that Zhong Zimin went to the capital to report on his work. After the design outline came out, the design work for both the LH2000 turboshaft engine and the heavy-duty armed helicopter began.

Leihuo Helicopter Design Institute.

This is a brand-new large training room with first-class conditions, which can accommodate more than 200 people to attend the lectures. Now, there are no empty seats here, even the empty space behind the classroom and outside the windows are full of people.

Last week, the Leihuo Helicopter Design Institute finally moved into the new design center. The office conditions have been improved to a higher level, and there is no need to be crowded in the old design building.

Lin Feng was giving a lecture to everyone, and there were several design drawings hanging, and he was talking about the design of this heavy-duty armed helicopter to these design drawings.

The classroom was very quiet, only the sound of Lin Feng lecturing, everyone flipping through notebooks, and the sound of writing while taking notes. Everyone was afraid that they would lose concentration and miss something.

Zhao Mingzhi, Li Guangshu and others, as well as every expert from the Helicopter Design Institute, including several Russian faces, also listened attentively to Lin Feng's lecture.

Today, they are not leaders or design experts, but have a unified identity, that is, a student.

From two classes in the morning and two classes in the afternoon, Lin Feng taught four classes here, almost a day.

After these four classes, everyone felt that some of the technical problems that plagued them no longer existed, especially Zhao Mingzhi and others, who were confident and confident that they could design this heavy-duty armed helicopter. come out.

After this lecture, the entire helicopter design institute started to operate at high speed, methodically, and started the comprehensive design work of this armed helicopter.

Beijing.

Dozens of people were seated in this meeting room, and the colored picture of this heavy-duty armed helicopter of Leihuo Technology Industry Group was hung on the wall of the meeting room, showing it unreservedly in front of everyone.

Zhong Zimin was both a little nervous and a little excited, and was introducing the situation of this armed helicopter to everyone.

(End of this chapter)