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Chapter 173 Domestic Spey

A fighter is composed of multiple components, and the performance of each subsystem will affect the performance of the entire machine. △↗

For Eastern countries, the most lacking is avionics and engines. Among them, engines are the most important, which is Mount Everest in the industry. Even if the avionics system has been conquered by Eastern countries thirty years later, the engine is still a weakness. Flying Leopard fighter has to use the SB engine sealed by the British, and the J-10 still has to rely on the Russian al-31. Although the self-developed turbofan 10 claimed to have met the installation conditions and is still more advanced than the al-31, the Air Force just doesn't buy it and is unwilling to install it.

Mhamad is not an outsider. At least he has experience in later generations and knows what both sides lack. In later generations, with the continuous advancement of electronic technology in Eastern countries, he even began to surpass Russia in avionics, but the engines have always been weak.

There are many mistakes and many sighs. If you change from now on, it will definitely not be the way you will be in the future. At the same time, this is also very important for Pakistan, because if Pakistan wants to become a true power, it needs an independent national defense industry and its own technology.

This is a win-win situation.

The Flying Leopard and J-10 of the Eastern countries were all made by themselves, and only avionics and engines were always the weaknesses of constraints. The J-10 did not start to develop rapidly until it introduced the Su-27 and obtained the al-31 engine.

"I wonder how we will cooperate?" Tujida asked Mhamad.

"If you want to have advanced fighter jets, you need advanced engines." Mhamad said: "The Tomcat fighter jets we are equipped have very advanced performance, but the engine is a shortcoming that restricts Tomcats. We hope to cooperate with your country to jointly develop a new engine."

Nur Khan looked at Mhamad with a sharp look. Although he had not reported this to himself in advance, Nur Khan did not feel that Mhamad was rude. On the contrary, his heart was filled with joy and excitement.

Nur Khan is already old. Pakistan's air force needs fresh blood and energetic people to take the helm. Now, Nur Khan's most optimistic is Mhamad.

Due to Pakistan's economic situation, as a money-burning Air Force, although it has received special care from the president, its equipment has always been very backward, so they have to use the J-6 to fight against the enemy's advanced fighter jets. Although they defeated the strong by the weak several times, they feel a little guilty. As the top leader of the Air Force, he did not equip the Air Force with advanced fighter jets.

All of this has changed significantly in Mhamad's hands. Mhamad used all kinds of methods to make the Pakistan Air Force significantly change within a year. Tomcat fighter jets, e-2 early warning aircraft, and electronic jammers. The Pakistan Air Force has become the Air Force of South Asia's power, and Nur Khan has secretly regarded Mhamad as his successor.

Now, hearing Mhamad's words, Nur Khan has been firmly determined in his judgment. Mhamad has been building Pakistan's strong air force. His eyes are farther away, not only equipped with advanced fighter jets, but also need to cooperate in the development of engines!

Nur Khan also knew that when the country would not pay a penny, Mhamad must have another way.

At this time, Mhamad happened to look at Nur Khan, as if asking him for advice. Nur Khan nodded, and Mhamad continued: "As far as I know, your country has introduced a complete set of production processes for British Spey engines and has the ability to produce Spey engines."

Spee Engine! Hearing this, Chen Yijian's eyes were extremely firmly looking at Mhamad, his eyes full of heat.

The SBMK202 engine is a relatively advanced turbofan engine developed by Rolls-Royce in the mid-1960s. It has a length of 5025 mm, a diameter of 1093 mm, a weight of 1850 kg, a maximum thrust of 54.5 kilograms, a thrust of 91.1 kilograms, a thrust-weight ratio of 5.05, a maximum military fuel consumption rate of 0.0684 kilograms/kn? hour, a maximum afterburner consumption rate of 0.2 kilograms/kn? hour, and a bypass ratio of 0.62.

This is a mature engine with a renovation time of 1800 hours. In the early 1970s, the UK replaced the J59 turbojet engine on the F4k fighter jet imported from the United States, and SB is also called the Ghost SB. At the same time, due to its good performance, the United States also introduced the manufacturing rights of this engine and improved it to TF41 for use in the A-7 attack aircraft, and planned to be used on the Tomcat.

Since Eastern countries did not have a practical turbofan engine for a long time, they began to negotiate with Rolls-Royce in the 1970s. In 1975, they began to sign a contract with Rolls-Royce, confirming the introduction of Spbe engines. At the beginning, Shen Fei was responsible for it, and then, due to various reasons, they were transferred to West Aircraft.

In the second half of 1979, Xi'an Aerospace Engine Factory installed four engines in two batches. After that, it completed a 150-hour long-term test run. It then completed a high-altitude simulation test run, starting test run at minus 40 degrees Celsius and cyclic fatigue strength tests of five major components. The test results meet the technical requirements. The British said that the SB made by Xi'an Aircraft has met the original standards, which is made of British roughs. The next step is to switch to domestic homemade roughs.

Unfortunately, the localization of SBB and the development of the turbofan 9 engine have stopped the car here.

Chen Yijian knew the inside story. Xifei is under tremendous pressure now. This pressure comes from the important project that Xifei is currently undertaking, the J-HK 7.

The H-5 and the H-6 are too slow, the supersonic strong-5 range is too short and the bomb load is small. Therefore, the Air Force is eager to have long-range fighter bombers and the Navy also need long-range counterattack attack aircraft. The J-H-7 was projected under this premise.

However, since the project was established, the Navy and Air Force has been in a quarrel. As a fighter bomber, two pilots are needed. The Air Force hopes that the cockpit will adopt a parallel layout, while the Navy hopes that the cockpit will adopt a tandem layout. In the end, for various reasons, the Institute of 603 decided to first arrange two seats, and the Air Force offended the Air Force. From then on, the Air Force ignored the JH-7.

As a result, the JH-7 has been a Navy project, and the Navy has not received much defense budget, and now it is an adjustment of economic construction. The JH-7 has received very little funds. As the supporting engine of the JH-7, the localization of SBB has no money to continue. Anyway, there are 50 original engines in stock. The country has cancelled the SBBBB project and also paid a large amount of money to Rolls and Rolls.

The project of the 603rd Institute is struggling. This time, I came out and saw Pakistan's advanced fighter jets. Any subsystem requires a lot of money to pile up. He was full of interest and was worried about the project he was hosting. In the face of advanced fighter jets, the J-H-7 was nothing.

(After writing this, the hero of East China is very heartbroken. He took so many detours and wasted so many good opportunities. There are institutional problems, short-sighted decision makers, and... In short, I would like to pay tribute to the scientific and technological workers who still insisted on working in adversity and finally developed various fighter jets such as Flying Leopard and J-10! It was you who supported the sky of the Republic!)

When Chen Yijian heard Mhamad say about Spey, he immediately became energetic: "Yes, now, our localization has reached 86%. As long as there is more capital investment, the localized Spey engine can definitely be produced."

"So, I don't know if you know, in fact, there is a type of thrust-increasing thrust-type in Spey." Mhamad continued: "Sey is just a mid-thrust, but it can be improved to become a high-thrust engine. The installation range is wider, and single-engine light fighter jets and twin-engine heavy fighter jets can be equipped. For example, equip our Tomcat fighter jets is very suitable."

Isn't this the TF41? Chen Yijian thought in his mind that since SB is domestically produced at Westfield, Westfield is more familiar with this engine, so he naturally knows that Rolls-Royce has such a modified engine, and it was successfully exported to the United States and installed on the A-7 attack aircraft.

However, although it is an increased push type and the core does not move, it is not small. It uses a brand new fan and low-pressure compressor to change the original 5th fan to a 3th fan and a 2nd low-pressure compressor. The fan diameter has been increased from 826mm to 950mm, increasing the air flow and pressure ratio. The imported diversion blades have been cancelled, and the high-pressure compressor has been changed from 12th to 11th. The installation angles of the turbine guide blades and rotor blades have been modified. Through these modifications, the engine thrust has been increased by 17%. Now, the basic model in China has not yet been developed, so how can I use the increased push type?

However, if it can be made, Chengfei's new model may be used, and the heart problems of domestic fighter jets can be overcome.

But, where does the technology come from? Where does the funds come from? Now Spey has almost stopped, and the J-H-7 project is also at risk of failure. The Navy's little funding is not enough.

"Yes." Chen Yijian said: "I know there is such a model."

"If you are interested, we are willing to cooperate with you to develop such a large thrust engine. We can provide some technology and a physical engine for hard surveying and mapping." Mhamad said: "I believe that with the joint cooperation of technicians from both countries, this engine can be completely produced."

Pakistan has produced technology? Its physical engines? Why don’t I know? When did Pakistan have engine technology? When did it have increased the push of Spey engines? They don’t even have basic models? Also, how to solve the problem? Pakistan’s advanced fighter jets are almost all borrowed now.

Then, Mhamad continued to say the next sentence, which immediately made Chen Yijian feel enlightened. (To be continued, please search for Piaotianwen, the novel is better and faster!
Chapter completed!
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