Start with the aviation industry

Chapter 226 Computer Aided Drawing

Zhong Zimin made a report to the military leaders in Beijing, while in the test workshop of Leihuo Technology Industrial Group, the 20th turboshaft engine was undergoing factory test run.

The LH1500 turboshaft engine is installed and tested once, which means that the engine only needs to be tested once before leaving the factory.

From the verification machine to the 20th turboshaft engine produced in small batches, none of them had any problems. After the test run was completed, the atmosphere in the test run operation room suddenly became relaxed.

"Already the 20th engine!"

"The quality of our LH1500 turboshaft engine is really good, and every test run is a one-time pass."

"."

Xia Yang, the technical director of the workshop, is also in the test run operation room. He must come and have a look at every engine test run, which has almost formed a habit.

Through the huge vacuum glass, I looked at the turboshaft engine that had completely stopped on the test bench, and then took a look at the test report that had just come out, and nodded, feeling very relieved.

He just went to the engine storage workshop to have a look. In the huge workshop, the army green engine packing boxes were neatly arranged. There was an engine number and the date of manufacture on the outside of each packing box.

After walking out of the test drive operation room, Xia Yang picked up the phone on his desk and called Lin Feng as soon as he returned to his office.

"Brother Feng, the 20th turboshaft engine has successfully completed the factory test run, and its performance is still very good."

At this time, Lin Feng was sitting down to rest for a while. He drew the design drawings for an hour or two at a stretch. If he was tired, he would take a rest, drink tea, and even go to the manufacturing workshops below to take a look. .

"Our speed is really fast, and we have already produced 20 units. It seems that the military order will be completed within a few months."

Xia Yang said confidently, "It really won't take a few months. What I hope most now is that our transport helicopter can be manufactured sooner."

Lin Feng said, "The manufacturing speed of the helicopter is not slow, and the parts of the first demonstration aircraft have already begun to be fully manufactured."

This is a verification machine, which is quite different from the prototype.

The main purpose of this aircraft is to carry out the static test of the whole aircraft. The static test room of the whole aircraft of Leihuo Helicopter Design Institute is almost completed, and the helicopter for the test is missing.

Because only the static test is done, this helicopter can have no avionics system, no navigation system, as long as it has the whole structure.

Xia Yang said, "Brother Feng, will our first prototype come out this year?"

Lin Feng glanced at the calendar on his desk, it was late October today, and it will soon enter November, so he replied, "It may not be possible this year, but I think it will be very interesting to get the first prototype out in the first half of next year." possible."

The two chatted on the phone for a few minutes, put down the phone, and Lin Feng went to the production site to walk around, mainly looking at the small batch production of the LH1500 turboshaft engine.

The number of small-batch production has been set at 50 units. After the manufacture of these 50 engines is completed, an analysis and summary will be made, mainly to summarize whether it is necessary to improve the design or process.

However, judging from the current situation, there is really nothing that needs to be improved. At most, there are a few small problems occasionally, which can be corrected quickly.

After returning from the production site, Lin Feng thought in his heart, after the small batch production stage is completed, should we start mass production immediately?

Well, this question probably depends on the progress of this transport helicopter. If this helicopter enters the formal production and manufacturing stage, it will not hurt to start mass production of the LH1500 turboshaft engine.

After returning, Lin Feng "returned to his old business" and continued to draw the design of this heavy armed helicopter stroke by stroke.

The design drawing laid out on the big table has not been completely completed, and Lin Feng still needs to make some annotations on dimensions and technical conditions.

What Lin Feng is drawing is the general design of the observation/fire control system of this armed helicopter. This system includes two parts, namely the target acquisition system and the pilot night vision system.

The target acquisition system includes five parts, which are laser rangefinder and calibration instrument, forward-looking infrared system, gunner-specific optical direct aiming instrument, daytime TV camera and laser calibration instrument.

Because the functions are too advanced, the technical content is too high, and it is of the world's top level, and this system is one of the cores of the entire armed helicopter, so Lin Feng drew the general design drawing himself.

As for the specific design, it depends on the designers below. If Lin Feng draws every picture, the workload will be too much. It will take a long time to draw with a pencil. .

Because of the existence of god-level learning talent, Lin Feng's design drawing level has progressed rapidly, and now he has reached an existence that many people look up to. Not only is the drawing speed fast, the quality is high, and it is very standard.

The drawn design drawings are almost like printed ones. Every line, every imitation of Song Dynasty characters, and every size are very standardized.

However, Lin Feng still hopes to have CAD computer-aided drawing.

In that case, the speed will definitely be several times faster. Take the general design drawing of the observation/fire control system as an example, there are a total of three large drawings. From the day before yesterday to today, Lin Feng spent more than five hours drawing every day, and the drawing was basically completed.

If there is a CAD, Lin Feng is sure that the drawing can be completed in three to four hours at most, and many things can be mirrored or copied, without having to draw one stroke at a time.

After all, computer-aided drawing is still necessary, otherwise, this hard-working drawing is really tiring and boring.

Finally, the drawing was completed and the last technical condition on the drawing was written. Lin Feng put down the pencil in his hand and looked carefully. There was nothing wrong.

There are still a lot of design drawings that need to be drawn by hand. If you continue to draw by hand, Lin Feng will basically spend at least one month in the next month.

"Boom, boom, boom!"

Just as he was satisfied with watching his "fruits of labor" and was about to take a break, there was a knock on the door of the drawing room.

It was Fang Anping who opened the door and entered.

"Boss, the task you entrusted to me has been completed. I have made the CAD installation package and 100 serial numbers. We can use CAD to assist in drawing."

Is it so fast?
From the assignment to the present, there are not a few days.

Fang Anping explained, "I happen to have a friend in the Ministry of Machinery Industry. They are promoting the application of CAD nationwide. When they heard that we wanted to use CAD for drawing, they sent me the things right away."

Hearing this, Lin Feng immediately became interested, and waved his hand, "Great, I want to be the first to install CAD on my computer."

While walking towards the office, Lin Feng thought in his heart, if he knew it was going so smoothly, he should have called Fang Anping over earlier, so he wouldn't have to work so hard to draw the design drawings for so many days.

But it's not too late, there are still a lot of design drawings that I need to draw. With CAD, I can even draw more design drawings.

The more design drawings Lin Feng draws, the more helpful it will be to the overall design and development, and the earlier the armed helicopter can be designed.

The two walked into Lin Feng's office together.

The floppy disk with the CAD installation package couldn’t fit in it. What Fang Anping gave Lin Feng was a mobile hard drive. When Lin Feng took it, he looked at it a few times. The appearance of the mobile hard drive in this era is not very different from that of later generations. The main reason is the storage space. The difference is much smaller, less than 1G, not hundreds of G at every turn.

Fang Anping was about to say that he immediately called someone to come over to install the CAD for the boss, but Lin Feng just looked at it for a while, and then started to install it himself.

To Lin Feng, this was nothing at all.

Fang Anping immediately felt a little admiration, the boss is really amazing, he even knows advanced things like CAD installation.

Lin Feng's movements are very proficient, but the computer configuration at this time is a little low, and the installation speed is a little slow. It took nearly half an hour to complete the installation. After entering one of the serial numbers, the CAD can be used.

Fang Anping was worried that Lin Feng would not know how to use CAD, so he quickly took out a CAD operation manual, "Boss, besides the serial number and installation package, there is also an operation manual."

Lin Feng didn't want to read this operation guide at first, because in the later generations, Lin Feng used CAD, but then he thought about it, the current CAD version is much lower, and the operation is quite different. good.

"Then leave this operating guide here for now. I'll take a look at it first, and you can come and get it tomorrow."

"Okay, boss." Fang Anping put the CAD operation guide on Lin Feng's big desk.

Lin Feng said, "CAD-assisted drawing is a good tool. Everyone, including you, must learn to use CAD drawing. I know that everyone has never been exposed to this thing and has no foundation, but they can learn from now on."

"Didn't you have a friend in the Ministry of Machinery Industry? Contact him and recommend one or two training teachers to come and teach you the use and operation of CAD. In addition, your design institute will also start purchasing computers. It is not enough to train CAD without a computer. "

"Okay." Fang Anping agreed.

After watching Fang Anping leave, Lin Feng opened the CAD operation guide and began to read carefully page by page.

Sure enough, there is still a big difference between the CAD of this era and the CAD of later generations. The version is much lower, and many functions are missing. It is still completely two-dimensional, and there is no three-dimensional drawing or auxiliary programming.

But it is basically enough, as long as it can be used, at least it is much better than manual drawing.

Lin Feng read each page carefully, because he has a god-level learning talent, and all the content he has read is firmly remembered in his mind, and he has his own understanding. After reading a book, this version of CAD is very helpful. For Lin Feng, there is no secret at all.

Every command, every operation, every function of CAD is very clear, maybe a little bit unskilled at the beginning of the operation, because the version is different, and it has not been used for many years, but the existence of god-level learning talent , This is not a difficult thing, it is estimated that after one or two days, it will be very proficient, like a veteran who has used CAD for many years.

the next day.

Lin Feng no longer worked hard on manual drawing, but sat in front of his computer and began to use CAD to draw some design drawings of this armed helicopter.

Pictured is the gunship's search radar system.

The same general design drawing, three full sheets, originally thought it would take at least several days, but Lin Feng only took less than a day, and completed the drawing around four in the afternoon, and then printed them all out.

After the drawings were printed out, Lin Feng spread them out on the big table, and the more he looked at them, the more he was satisfied. It felt like a shotgun change.

It's such a good feeling!

Gone are the days of drawing manually with a pencil stroke by stroke. From then on, the happy days of CAD-assisted drawing began.

For several days in a row, Lin Feng's main job was drawing, because he used CAD to assist drawing, and he gained a lot. There were at least [-] printed design drawings on the big table in the drawing room next to him.

If this was in the past, I wouldn't have dared to think about it. It would be nice to be able to draw a few design drawings within a few days.

While continuing to draw design drawings in front of the computer, the big brother on the desk rang. Lin Feng stopped drawing, picked up the phone and pressed the connect button, and Zhao Mingzhi's voice came from inside immediately.

"Boss, I'm going to come over and report to you about the latest design progress."

For several days, Lin Feng was basically drawing the design drawings of this armed helicopter, without asking about the progress of the design, Zhao Mingzhi couldn't sit still and took the initiative to call.

In fact, reporting the progress of the design is not the main purpose. His main purpose is to ask Lin Feng to give design guidance. It would be even better if he could bring some design drawings.

Lin Feng smiled heartily, "I'll come over early tomorrow morning, and we'll talk about the design progress report when we meet tomorrow."

"Okay, boss."

After finishing the call, Lin Feng continued to draw the design drawing, and finished it when he got off work in the morning. This efficiency is really good.

Although the efficiency is good, Lin Feng is still not going to draw the design blueprints of several types of missiles provided by the system, as well as weapons such as single-barreled chain guns, rockets, and rocket launchers.

There are also priorities for drawing drawings. What most designers need now is the general structural drawing of the helicopter, the design drawing of the coaxial reversing dual-rotor system, the design drawing of the transmission system, the deceleration system, and the avionics system.

The next morning.

Lin Feng got up, got dressed and started to wash. Today's plan is to go to Leihuo Helicopter Design Institute to guide everyone in the design and development of this armed helicopter.

Walking into the bathroom of the master bedroom, a happy smile appeared on the corner of Lin Feng's mouth. The toothpaste has been squeezed out, and the warm water is also ready. Don't ask, these are all prepared by Hu Xiaoxiao.

After meeting the parents of both parties, under Lin Feng's sweet words, Hu Xiaoxiao finally agreed to come over occasionally to warm the bed at night, and the two of them began to live a shameless life.

After washing, Lin Feng went downstairs, breakfast was ready, Hu Xiaoxiao waved, "Brother Feng, come and have breakfast."

She has been waiting for Lin Feng. After Lin Feng sat down, she specially peeled an egg for Lin Feng. Lin Feng laughed and said that it was a love egg, which was very sweet.

After dinner, the two went out together, sending Hu Xiaoxiao to work first, and then Lin Feng went to Leihuo Helicopter Design Office.

Inside the rental house.

Ma Xiaoli was also about to go out, and when she closed the door, she glanced at Hu Xiaoxiao's bedroom, thinking in her heart that she couldn't catch the master's car today, so she had to take the shuttle bus.

Generally speaking, Lin Feng would come to pick up Hu Xiaoxiao to go to work, and it was logical for Ma Xiaoli to get in the Grand Cherokee and go to the company together.

Today I can only take the bus.

Considering that many employees in the Phoenix factory are going to work in Hexi, Leihuo Technology Industry Group specially outsourced several shuttle buses. There are several stops in the Phoenix factory. Everyone can take the shuttle bus to Hexi for work every morning. After get off work in the afternoon, the same You can take the shuttle bus back.

Lin Feng first sent Hu Xiaoxiao to Hexi, and then went to Leihuo Helicopter Design Institute located in the industrial park in the southern suburbs of the provincial capital.

The Leihuo Helicopter Design Office is adjacent to the Leihuo Helicopter Manufacturing Factory, covering an area of ​​more than 300 mu. It is a 28-story design building and several low-rise buildings. These low-rise buildings are all kinds of laboratories, and each building is well-built.

At about nine o'clock in the morning, the Grand Cherokee stopped at the entrance of the R&D building designed by the Leihuo Helicopter Design Institute. Zhao Mingzhi, Li Guangshu and others were already waiting.

"Hi boss."

"Boss, you have worked hard all the way."

Lin Feng nodded, then waved his hand and said, "Let's go, listen to your design progress report first, and take a look at the design drawings that have been drawn."

Everyone gathered around Lin Feng into the design and R&D building, and took the elevator to the top floor, where there are mainly offices for several leaders, and there are several conference rooms of different sizes, and reception rooms and the like.

A conference room has been prepared a long time ago, and the design drawings drawn up these days are still placed on the circular conference table. It seems that there are quite a lot of them, at least twenty or thirty copies. There are No. 1 and design drawings for the small ones, and No. 3 design drawings for the small ones.

After everyone sat down, Zhao Mingzhi reported the design progress to Lin Feng on behalf of the design office, and then said, "Boss, this is part of the drawings we have completed the design, please take a look."

The efficiency is really good. It has only been more than ten days since the design outline was finalized, and some design drawings have been drawn.

Of course, this also has a lot to do with Lin Feng's design guidance and the design drawings drawn by himself. Because of these things, everyone's design ideas and directions are very clear.

With the general structural design drawing of this armed helicopter drawn by Lin Feng, plus Lin Feng's description of the structural design of this armed helicopter, some drawings were drawn relatively smoothly.

Lin Feng also became interested, "Oh, your speed is very fast, then I want to take a look at these design drawings."

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(End of this chapter)