As the saying goes, blessings do not come together, and disasters do not go alone, but now Lin Hongfei has deep doubts about this sentence, for no other reason, just returned to the company, and has not arranged personnel to conduct various tests on DT-30PM and DT-10PM, the international long-distance call in, and the excited voice of the old man Ma surged out of the earpiece, "Mr. Lin, you should send us a big red envelope." ”

"Huh?" Old Man Ma actually took the initiative to ask for a red envelope from himself? Lin Hongfei was stunned for a moment, and then became excited: During this time, Mr. Ma has been making a special trip to analyze the TU-134B aircraft with experts invited from the Tupolev Design Bureau, and study how this big change should be carried out.

"Okay," Lin Hongfei said with a smile, "Let's say, as long as the reason is sufficient, I will definitely give you a big red envelope." ”

"We have completed the analysis and calculation of the TU-134B modification, as long as you approve the money, then we can modify and test the aircraft, Mr. Lin, you said, should you send us a big red envelope?" On the other end of the phone, Old Man Ma shouted loudly, as if he couldn't express his excitement if he wasn't so inadequate.

"Of course no problem!" Lin Hongfei didn't say a word, and immediately agreed.

This modification of the TU-134B has the participation of the Tupolev Design Bureau, the "mother's family" of the TU-134B, the participation of the American professional business jet designer team that is best at humanization, maintainability and high-tech applications, and the participation of the aircraft designer who is the best at aerodynamics in the Republic. As long as you open your mouth, what else do I have to worry about...... Can you tell me about the specific conversion project? ”

"Okay," this is the right thing, just now the old man Ma was joking with Lin Hongfei, but this is not the time to joke, the old man coughed twice, and said, "In terms of the airframe, after analyzing the fuselage structure, wing structure and take-off and landing system of the TU-134B, we are in accordance with the standards of FAA Part 25 and the relevant standards of the American aviation industry. A large number of new materials and new structures have been adopted, and compared with the TU-134B, the improved fuselage is about 1.5 tons lighter than before, and the engine installation position has not been changed;

"Minor modifications have been made to the shape of the aircraft's wings, borrowing from the design concept of supercritical airfoils. The modified wing can provide a total of 500 kg more fuel than before, while the overall weight remains largely unchanged. There is also the option to add winglets. The use of a new wing. It is possible to extend the range by 3% while remaining the same elsewhere, and by about 7% if winglets are used; ”

Mr. Acton is responsible for the application of high-tech products on the aircraft and the improvement of the aircraft's ease of maintenance, which has been greatly improved compared to the previous aircraft, although it has not yet been quantified. But Mr. Acton said that compared to the previous one, it will probably be able to meet the same standard as the Boeing 737-300/400 family. ”

"In terms of avionics, there's Rockwell. Collins and Honeywell products are available for us to choose from. Both products are quoted for similar prices, both are the two-seater cockpit you require, and both are able to provide a full set of equipment including a full set of digital piloting and color multifunction display systems, weather radar, air data computers, mobile digital maps, autopilots, communications, navigation, surveillance, maintenance, emergency and data management systems, as well as integrated aircraft and mission processors, and they promise that if we purchase more than 10 sets, they will be specially customized for the use on our aircraft. to ensure that the requirements for the use of our aircraft are met. That's right, according to Rockwell. The information provided by Collins and Honeywell on these products, in this piece, including the weight loss of the body, we can reduce about 1 ton of weight; ”

"In terms of engines, we initially selected IAE's V2522-D5, well, CFM was originally McDonald. Douglas Aircraft Company MD-90-10 aircraft prepared engines. In addition, CFM56-5B series and CF34-8C series can also be considered, these three engines have comparable performance, and the specific choice is up to you. ”

Although Mr. Ma coaxed Lin Hongfei to ask for a bonus just now, it is one thing to ask for a bonus, those rights belong to their own bosses, this is another thing, those who can fight for themselves, those who must be given to their own bosses, Mr. Ma knows very well.

"The maximum thrust of these engines ...... Two engines are equivalent to three D-30s, right? Lin Hongfei frowned, "Isn't there a more suitable engine?" ”

"It's not nothing, but you said at the beginning that to make this plane fly faster, the cruising speed of the D-30 engine is 0.73 to 0.75 Mach per hour, and if you use the above three engines, the aircraft can reach a cruising speed of Mach 0.90 and a maximum speed of Mach 0.93 under light load."

The TU-134B has a cruising speed of 850-900 km/h, or Mach 0.9...... Lin Hongfei quickly acquiesced in his heart to remove the result: then the cruising speed can reach 1074 km/h, and the maximum speed even exceeds 1110 km/h.

"What about fuel consumption?" Lin Hongfei immediately asked, "Compared with D-30, what is your calculation result?" Has fuel consumption increased or decreased? How much impact will it have on the voyage? ”

"It's definitely an increase, all three engines have fuel consumption levels equivalent to 75 to 80 percent of the D-30's fuel consumption, and after reducing the weight of the aircraft and redesigning the wing shape, the calculations according to our new design plan are roughly the same as what you originally requested...... The main reason is that the cruising fuel consumption of these three engines is lower than that of the D-30. ”

"That's fine, you guys start preparing, and as for the avionics and engines, you inform General Electric, IAE, CFM International, Honeywell, and Rockwell. Representatives of Collins came and told them that I was going to talk to them. Lin Hongfei breathed a sigh of relief, "You bring the relevant documents to China, I will sign, there are a lot of things in China during this time, and I can't get out...... Ma Lao, after such a change, it is basically equivalent to a brand new aircraft, right? ”

Although he can only be regarded as a relatively senior aviation enthusiast, the reason is still clear.

"Except that the fuselage hasn't changed and the overall aerodynamic layout hasn't changed much, it's basically a redesign of the aircraft," said Mr. Ma. "But there's a problem with that."

"What?"

"The overall cost of the aircraft has risen significantly, if it is produced according to the specifications of the TU-134B, the overall cost of the aircraft will not exceed $4 million, but now, the overall cost of the aircraft will exceed $12 million. The increase in cost was mainly taken away by engine manufacturers and avionics equipment manufacturers. "Speaking of which. Old Man Ma couldn't help but grit his teeth. A burst of heartache: there is a TU-154M bought from Russia in China, and the purchase price of this much larger aircraft than the TU-134B is only 8 million US dollars, and the cost is estimated to not exceed 6 million US dollars.

What could have been solved at a cost of 4 million yuan, now it is 12 million yuan to fly, and no one will feel comfortable anywhere, even if they know that this is a must. I won't feel comfortable either.

"There's no way to do it," Lin Hongfei sighed, "Without using a lot of American-made equipment, we won't be able to get the FAA's airworthiness certificate at all...... What was the outcome of the communication with the FAA? ”

The FAA official, who has been in charge of liaising with the Guqi Provincial Industrial Manufacturing Co., Ltd., is Lee. Iacocca introduced it. The dude is ambitious and ready to run for next year's city council, and Lin Hongfei promised him that he would support his campaign as long as he did his best to coordinate all aspects of the relationship within the FAA.

And from Lin Hongfei's heart, the price of $12 million is actually within the acceptable range of Lin Hongfei.

It is important to know that in 10 years, even a small jet regional aircraft of Bombardier or Embraer will be sold for more than 25 million US dollars, even if the factors of inflation and price increases are removed, according to comparable purchasing power, it is equivalent to about 20 million US dollars now, so that an aircraft that can seamlessly connect with Boeing 737, Airbus A320 and other 150-seated trunk aircraft, and can also temporarily undertake trunk diversion tasks when passenger traffic is busy, the cost is only 12 million US dollars, and the selling price depends on yourself, so what is not satisfied?

As soon as he said this, Ma Lao's mood finally improved, and he said to Lin Hongfei with a smile, "Mr. Andrew promised that the FAA will not set up any explicit or implicit obstacles for our aircraft produced in the United States and using American companies' aviation products. ”

"Then it's no problem," Lin Hongfei smiled, "Ma Lao, I have already communicated with the domestic civil aviation system, as long as our aircraft can be built and obtain the FAA's airworthiness certificate, they will purchase it." ”

"Really?" At first glance, when he heard Lin Hongfei talk about it, he was taken aback, in his understanding, it seemed that Lin Hongfei was designed as a business jet at the beginning of the design, "Mr. Lin, you didn't lie to my old man, right?" Did the civil aviation system really decide to buy our aircraft? ”

"The leaders of the Civil Aviation Administration personally promised me that as long as our aircraft can obtain the FAA airworthiness certificate and the number of seats is more than 90, then there is no problem, and the number of purchases will not be less than 100, how about it, what is the problem?"

The TU-134B has 80 seats in an all-economy layout, but according to the previous design draft, the cockpit will be moved forward, and three more rows of seats can be arranged after eliminating the seating of flight engineers and radio operators, so that the maximum number of passengers in the cockpit can reach 92...... If it is still only 80 people, the leaders of the Civil Aviation Administration will promise Lin Hongfei that as long as the number of seats is more than 80, it will be purchased.

"That'...... I'll go and review the drawings on one side to see if there are any omissions," As soon as I heard that China was going to purchase this aircraft, Old Man Ma, who was still very calm just now, suddenly couldn't sit still, "This is an aircraft for our Chinese to use by ourselves, but we dare not make a mistake." ”

"Well, let's go," this plane is for us Chinese to use ourselves, Lin Hongfei of course also hopes that this plane is safer, safer, "If possible, try to cross-review, and pay attention to confidentiality, our company is still very weak, if it is not for the support of the state, we cannot compete with the three behemoths of Boeing, McDonnell Douglas and Airbus." ”

"Well, I know how to do......" Old man Ma nodded again and again, how could he not know that this commitment of the Civil Aviation Administration actually came from the state's support for the company? As soon as he thought of this, the old man felt that the weight on his back seemed to weigh a thousand catties, "Mr. Lin, don't worry, even if I fight for this old life, I must build the safest plane for our Chinese...... What else do you command? ”

"In addition to IAE and CFM International, you go and talk to Rawls in the UK. Royce, Pratt. The Whitney Company and General Electric Company contacted them to see if they had any cheaper engines with better fuel economy. The cruising speed of the Boeing 747 is only Mach 0.84, the cruising speed of the Airbus A320 is only Mach 0.78, and the cruising speed of the Boeing 737 is even lower, only Mach 0.74. ”

Hearing Lin Hongfei's words, Mr. Ma was as excited as if he had been beaten with chicken blood, "Mr. Lin, you can rest assured, with these 100 aircraft from the Civil Aviation Administration as the base, the old man, I have the confidence to let these engine companies have a suitable engine for the development of our company." ”

"Don't, don't!" Lin Hongfei listened to the Great Khan! "Old man, think about it, if this news spreads, Boeing, Airbus, and McDonnell Douglas companies will not have to go crazy? As soon as they toss, do they still have a good life for us? ”

"Uh...... Hehe...... "Old man Ma realized the inappropriateness of his move, and laughed twice, "Okay, old man, I know what to say, Mr. Lin, you can rest assured, old man, I will definitely find a safe, cheap and fuel-efficient engine for the country!" (To be continued......)