Dominate South Asia

Variable swept wings! This is the pride of every Grumman technician. This technology gives fighter aircraft the best wing aerodynamic characteristics in various airspaces, high, medium and low speeds, and high and low speeds. While other aircraft are designed with There are trade-offs. For example, the F-16 has poor high-speed capabilities. After mounting weapons, it is almost impossible to go supersonic. The F-15, on the other hand, focuses on supersonic capabilities and has low dogfighting performance below Mach 0.9. Not as agile as the F-16.

It is precisely because of Pakistan's persistence in variable swept wings that Laihak came to Pakistan and worked with them to develop this new stealth improved model. For them, the Pakistani model is simply for them. Made to measure.

And now, significant progress has been made in technology, and the prototype has begun test flights! In this moment of celebration by thousands of people, Laihak still kept his head clear.

There is still a technological gap between Pakistan and the United States.

"The fourth-generation aircraft project in the United States plans to use engines with a thrust-to-weight ratio of more than 10, but our K2 engine has a thrust-to-weight ratio of 8, and the flight envelope is even worse. For example, at 500 The restart capability at low altitude is almost impossible, and American engines have begun to use thrust vector control, so we still have a long way to go,” Lehak said.

Engines are the crown jewel of the aviation industry. Although Pakistan has made great progress, it is still far behind the perverted and almost alien technological level of the United States.

Laihak said this, and Asius nodded. It was precisely because the engine capacity was not up to par that this variable sweep wing technology was developed. When the engine was lagging behind. The ability to cruise at supersonic speeds can still be achieved in theory.

"At the same time, we can foresee that the future sky will be an era of stealth aircraft. To detect stealth aircraft, we need radars with more advanced performance, such as active electronically scanned phased array AESA radar." Lehak continued: " This is also a must-have choice for American fourth-generation aircraft.”

Now, while the Soviet Union is still using the N001 radar with an upside-down lid, Pakistan has mastered the technology of flat-panel gap radar. This has to be said to be a great progress. In terms of electronic technology, Pakistan has long surpassed the Soviet Union. Unfortunately, in the Western world, this technology has begun to become outdated. The future sky requires active phased array radar!

The difference between the flat plate gap and the Kalense is only the antenna, the basic principle of the radar is still the same, and the active phased array radar. It is a new form of radar. Each T/R antenna on it is a transmitting and receiving unit. Relying on electronic control of the scanning direction, there are countless small emission units, each of which does not have much energy, but the combined energy is quite considerable.

Stealth aircraft are not completely invisible, but have a small radar reflection area. Active phased array radar, after discovering a suspicious target, can mobilize all the beams to converge, thereby increasing the transmission power and enabling detection at a longer distance.

At this time, the MiG-31, an upgraded version of the Soviet MiG-25, already used a phased array radar, but it was not an active phased array radar. It is only a passive model, and the launch is still achieved by a high-power traveling wave tube. Even so, the performance of the MiG-31 is quite powerful, and it can even be used as a small early warning aircraft. Used to command four ordinary fighters for combat.

"Our own Friendship Shield system is an active phased array radar, right?" Mhammad said: "Is it technically difficult to transplant it to a fighter jet?"

Pakistan also has the technology for active phased array radars. The navy's long-range air defense missiles use this kind of radar.

On this basis, how difficult is it to develop an airborne phased array radar? Mhamad, who comes from a non-technical background, is not entirely sure.

"The technical difficulty is not small." Asius said: "One is the miniaturization of the T/R component, and the other is the data processing performance."

The antennas and radar arrays used by the navy are on the order of several meters by several meters, while the radars used by fighter aircraft are less than one-tenth of that, and thousands of T/Rs must be concentrated on such a small plane. The components are required. For example, the radar planned to be used by the American F-22 has 2,200 such components. You can imagine how small each one is.

At the same time, data processing capabilities are also very important. To put it simply, a phased array radar is equivalent to a combination of countless ultra-small radars. Each T/R unit can emit and receive electromagnetic waves. It is just one radar, thousands of For such a unit, it is necessary to accurately calculate the relative position and coherent phase of each unit, calculate synthetic side lobes and other data, and control the phase shift arc and angle of each phase shifter to complete the alignment of a certain unit. Angle scan. The processing of these data is even more critical. Without appropriate algorithms, even a supercomputer will be drowned in the ocean of data.

The Navy's system uses a computer processing system composed of huge cabinets. When placed on an aircraft, the computer must be shrunk. These are cutting-edge science and technologies. You must know that airborne computers require specialized reinforced anti-explosion chips. OK, civilian chips must not be placed on it. At this time, civilian CPUs have entered the Pentium era, and the main frequency has marched towards hundreds of megabytes, while the main frequency of military chips is only tens of megabytes, which brings problems to signal processing. higher requirements.

Active phased array, pulse Doppler, beam sharpening, ground moving target display/tracking, synthetic aperture... these functions require more complex programming to achieve.

Pakistan still has a long way to go to advance technology! Now this test flight model is only equipped with the flat slot radar produced by Pakistan in the past. This can only be a transitional product. Later, the new active phased array radar will need scientific research from the Babel High-tech Center.

Thinking of this, Muhammad was also a little emotional.

"Control tower, control tower, No. 01 invisible cat has completed the preparations before takeoff, request to take off!" At this time, the voice of the pilot came from the radio, and the plane had completed all preparations!

"You can take off!" The captain of the test flight brigade in charge of command on the scene said with the radio.

Everyone looked back and saw that the fighter plane with a unique appearance had two balls of blazing flames on its tail, pushing the fighter plane forward and sliding quickly. After a few hundred meters, the front landing gear was lifted up, and then the main landing gear at the back also left the ground lightly, and the whole plane had already taken off!

For the first test flight, as long as it can fly, it is considered a success! There was laughter and joy at the scene.

"Congratulations on the successful first flight of our fighter plane! This is the credit of all the scientific and technological personnel!" Muhammad said: "This means that our Pakistani technology has reached the world's advanced level. We must guard against arrogance and impatience, continue to work hard, and strive to finalize this fighter plane as soon as possible to protect our South Asian sky!"

The technicians at the scene applauded and paid tribute to the great president. These honest technicians who devoted themselves to scientific research did not notice Muhammad's wording: protect the South Asian sky!

India, as a rogue with bloody hands that invaded other countries, does not deserve to exist!

Open the history book, and you can find out how many countries India has annexed after its founding! The princely states in the south, Kashmir in the west, Sikkim in the east, and southern Tibet in the north were all swallowed up by India!

Among them, Sikkim, as a sovereign state, was the most difficult to accept! Sikkim's exiled king Wangchuck Tensing Namgyal, sitting on the sofa in the Great Hall of the People, looked at the national leaders of China in front of him, and felt extremely warm.

"We Chinese have always been opposed to the Indian government's illegal invasion of Sikkim. We support Sikkim's independence and oppose India's aggression." The Prime Minister of China said.

He has been living a displaced life. Although he is a royal family, he does not even have a little royal dignity. In the United States, he lives like an ordinary person. Hearing the supportive attitude of China, Wangchuck felt that tears were about to flow down.

"We are always hoping to free Sikkim from the Indian invasion," Wangchuk said. "The Indian invasion is illegal, and the people of Sikkim are now living in dire straits."

"Yes, we know this." The Chinese Prime Minister continued, "However, independence and freedom come at a price. Your Majesty, are you ready?"

It is impossible to be liberated from the clutches of India without bloodshed and sacrifice. Wangchuk said firmly, "I am willing to pay any price! As long as your country supports our Sikkim's independence, we are willing to respect China as our master as before! Our Sikkim can become a special zone of China! Please station troops in our Sikkim Special Zone to help us maintain the stability of the Sikkim Special Zone!"

In fact, long before Sikkim was annexed by India, that is, on June 20, 1974, the turbulent moment in Sikkim's history, Sikkim's "National Congress Party" proposed a constitutional amendment to the Sikkim Parliament and asked the Parliament to vote no later than 12 noon that day, asking Sikkim to join India. The other major party, the National Party, adopted another plan: to announce to the Sikkim people and the international media the "Resolution to Join Huaxia" jointly drafted by the legal experts and patriotic intellectuals of the National Party, and its appendix "Interim Plan for Administrative Merger", announcing that it would officially "join the Huaxia administrative system" and become an "administrative region" of Huaxia. (To be continued ~^~)