Compared to the Navy, the Air Force of the Republic (including the Navy) is at a loss from the "scientific and technological revolution".

By the end of the Sino-Japanese East China Sea War, the progress of the Republican Air Force mainly relied on the accumulation of early technology and had little to do with the research results of the Physics Experiment Center.

At that time, the most eye-catching was the electric turbo accelerator applied to the "Taihang" series of engines.

The electric turbocharger formed by the combination of "Longxiang battery" and superconducting motor is also known as "electric turbocharger", which is mainly used to increase the air flow of the turbofan engine, which is equivalent to adding a low-pressure turbine to the turbofan engine, so as to improve the combustion efficiency of the fuel and improve the thrust of the engine without increasing fuel consumption.

Electric turbochargers gave rise to the J-10B, J-11B, and J-13B.

"Power" has always been the biggest obstacle to limiting the combat effectiveness of the Air Force of the Republic.

At the beginning of the 211th century, the main "power" of the air force of the republic also came from Russia. Originally, exports were hampered by the use of Russian-made RD-33 engines on FC-11 fighter jets sold to Pakistan. Affected by this incident, the Republic has increased its investment in the research and development of aero engines.

On the basis of the AL-31F, the Republic has developed the "Taihang 0 Motive" with full intellectual property rights.

There are two types of "Taihang" engines combined with electric turbochargers, namely "Taihang 0-11" and "Taihang 0-2", of which "Taihang 1C-1" is standard equipment for J-10B, J-111 and J-13, and "Taihang 1C-2J-11B and J-13B are standard equipment.

The Air Force of the Republic of China performed brilliantly in the Fourth Indo-Pakistani War and defeated a strong enemy in the East China Sea War.

The place that really "enjoys" the research results of the Physics Experiment Center is the fourth-generation fighter of the Republic.

The J-14 was capable of destroying a large AWACS aircraft of the Japan Air Self-Defense Force in the East China Sea War. Reverse the passive situation. It is not unrelated to the "active electromagnetic interference device".

Arguably. The development process of the J-14 is a lesson plan for the Republic Air Force to "make up for shortcomings".

When the R&D project is launched. Because the requirements of the air force are very high. The technical reserves are also very weak. As a result, the development work was suspended several times. He was almost forced to dismount.

Until 2014. "A breakthrough has been made in the research and development of Taihang 1. The development of the J-14 is on the right track.

Subsequently. The second phase of the research work of the Physics Experiment Center was launched. Polymer composite materials are included in the main research topics. The development of the J-14 began to accelerate.

When it first flew in early 20166, the J-1 had a lot of problems to solve.

According to the plan submitted by the Air Force, the J-14 was postponed from June 20177 to December 20177, mainly due to the large number of new technologies and materials, resulting in too many design modifications in the finalization stage.

It can be seen from this that the Air Force wants an advanced fighter that is comparable to the F-22, not a "half-baked cargo."

Like the J-14, the development of the J-15 fighter as a low-end match was also very difficult.

Because it is only equipped with 1 engine, the thrust of the "Taihang 15" must be increased by 25% compared with the "Taihang 1" for J-15~, so that the J-15 can not lose the ground maneuverability of the third-generation semi-air control fighter. Because of the smaller body, the electronic equipment developed for the J-115 is more integrated and more difficult to develop. Because it was to be used as an aircraft carrier aircraft, the base model of the J-15 was 2 instead of one; Carrier-based aircraft models have higher requirements for corrosion resistance, fuselage strength, landing gear strength, combat radius, and combat use, and are more difficult to develop.

Compared to the J-14, the J-15 uses more new technologies. When designing, the impact of new materials is taken into account. In the latest design document, the main load-bearing parts of the J-15 are made of high-strength alloys, the main structure of the wing is made of composite materials, and the wing and fuselage skin are molded by polymer composite materials at one time. The fire control radar adopts the "HY166" active phased array multi-function radar, which was finalized at the end of 20166, and its integration is 50% higher than that of J-1" HY11, and its performance exceeds that of "HY14" when the volume is reduced by 1/3

From the start of the project in 2010 to the end of 2016, the Air Force invested 37.6 billion yuan in research funds for the J-15, and the basic research expenditure alone exceeded 210! Although the development of the J-35 is nothing compared to the F-15, it is not a small amount of money for the Air Force of the Republic, which is not rich.

Thankfully, many of the J-14 research results can be used in the J-115.

In addition to the huge research funds invested by the Republic Air Force, Pakistan, which participated in the research and development work, also invested billions of dollars.

According to the "long-term plan" of the Air Force, after the J-115 is put into service, it will replace the J-7, J-8, J-10 and Q-5 series fighters within 1 and become the main medium fighter of the Republic Air Force. HNA is also preparing to replace the J-7, J-8, J-10 and Q-5 with the J-15, and to make the J-15 a standard carrier-based aircraft. Counting the 150 that Pakistan promised to procure, the production of J-15 is definitely above 2200. If it can be harvested in the international market, the production of the J-15 will not be less than 2500, and may be able to exceed 3000, becoming the fourth generation fighter second only to the F-35 in production.

It's just that the first to enter service was not the Air Force type J-15, but the Navy carrier-based type J-15.

When the aircraft carrier "Republic" was launched, the J-10B and J-13B were allowed to fly through the field, just to show the foreign military attachés who were invited to participate in the ceremony. As long as the J-15 is in

: The first flight will be able to be launched in mid-2018. At this time, the "Republic" > work on sea trials before entering service.

In addition to the fighter jet, the replacement of other aircraft types has also begun.

The next generation of early warning aircraft and tanker ground-based aircraft are all being developed "Y-14 electric large transport aircraft, and Y-14 has a direct relationship with the large trunk airliner on the fly.

The key technology of all-electric large transport aircraft is "composite battery shaping technology".

Unlike navy and army equipment, space on aircraft is more valuable, and weight restrictions are more stringent. When the J-14 was developed, in order to encourage the designers to reduce the weight as much as possible, the Air Force threw out the bait of "rewarding 1 month's salary for every 1 kilogram reduced", and as a result, the empty weight of the J-1 was reduced by a full 44 kilograms!

Obviously, the "Longxiang battery" cannot be loaded on an airplane at will, as it is on a battleship.

According to the design scheme proposed by Shangfei, the composite battery must be integrated into the wings and tail of the aircraft, and the "ineffective space" on the aircraft must be used as much as possible to avoid encroaching on the "effective space" in the interior of the cabin. In order to reduce weight, the composite battery must be integrated with the load-bearing structure.

Because the Y-14 is a military transport aircraft, it can use the "Longxiang battery", so the difficulty of development is slightly lower.

At the end of 20166, the first prototype of the Y-14 (and the only prototype aircraft) made its first flight, and in the subsequent test flight, it set a maximum flight altitude of 12740, a maximum flight speed of 970 km/h, a minimum flight speed of 210 km/h, a maximum load of 65, a maximum load of kilometers, a range of 7500 kilometers when a load of 2C, and an unladen range of 1C500 kilometers.

All the data met the requirements set by the Air Force.

As with the problems faced by the Navy, the Y-14 wanted to be mass-produced, and the cost problem had to be solved.

Only one prototype machine was manufactured, and it was equipped with 34 "Longxiang batteries" that cost as much as 7.5 billion yuan. Not to mention the Air Force of the Republic, I am afraid that even the US Air Force cannot afford to buy aircraft that are more expensive than gold.

The production and price of composite batteries have also had a negative impact on civil aviation.

Because the production of "Longxiang battery" has not been able to rise, Ji Youguo has not approved the composite battery (starting from level 1, the energy storage rate of each level is increased by 3600 kJ/kg. The energy output rate of 28800/kJ/kg "Longxiang battery" is an 8-level composite battery) put into the civilian market, used in electric vehicles for the 2-level composite battery, used in high-end civilian products for the 3-level composite battery, only some foreign trade military products use composite batteries.

Although the Physics Experiment Center has developed a 12-stage composite battery, the yield is more important than the performance.

According to the design scheme of the upper enclave, under the condition of optimizing the aerodynamic design and adopting civilian standards, only a 6-level composite battery is required to manufacture an all-electric large trunk aircraft with a range of more than 0000 kilometers, a capacity of more than 300 passengers, and a load of more than 70. The problem is that the price of a class 6 composite battery is also not cheap.

There is no doubt that all-electric regional and mainline airliners will have a revolutionary impact on the aviation market.

The first regional airliner that has been designed and is being built has brought a 12-magnitude earthquake to the international aviation industry and the international air transport industry.

According to the data released by Shangfei, the operating cost of the CZZ1 regional airliner is only one yuan per ton-kilometer. According to the calculation of 2,500 kilometers, the flight cost of a trip is only 7,000 yuan (about 400 US dollars), which is only 35% of the B-737-800 regional airliner and 33% of the A-320-66C0 regional airliner. According to 150, the full seat rate is 80%, and the one-way ticket price can be reduced to less than 1 yuan!

Although the unit price of the CZZ1 basic model is as high as 8.7 billion yuan, which is 1 times that of the B-737-800 and 177 times that of the A-320-600, the CZ-011 regional airliner has an unparalleled "charm" for airlines around the world.

Airlines are not only thinking about the purchase price, but also about operating expenses and maintenance costs.

With all-electric propulsion, the CZZ1 not only has far lower operating expenses than its competitors, but also has only about 30% of its maintenance costs.

Based on the calculation of 25 years of flight of a regional airliner and a total flight time of 80,000 hours, the life expenses of the CZ-011 are only those of the competition.

For airlines affected by the financial crisis, the CZ-011 has become a "panacea" for "resurrection".

It is precisely because of this that before the finalization, the official orders and intended orders of CZZ1 exceeded 2000!

In the words of the president of Boeing, the appearance of the CZ-C11 will make Boeing encounter unprecedented challenges!

In its report to the central government, it was clearly mentioned that if the production of composite batteries could be increased, the performance of the 6-stage composite battery on the CZZ1 would be improved by at least 20%, and even if the price was increased by 25%, the cost performance would exceed that of all competitors.

A report was also submitted by the relevant departments of the State Council.

If the output of Class 6 and Class 8 composite batteries can be doubled, and the mass production of Class 12 composite batteries can be achieved, the all-electric large trunk airliner will have unparalleled competitiveness in the international market. As long as the United States and Europe cannot develop a product comparable to the Class 6 composite battery within 0 years, Boeing and Airbus will go bankrupt.

The question is, is it so easy to increase battery production?

Damn it**

I beg for a monthly pass, and the brother who has a ticket smash it quickly and work hard for the third! (To be continued)

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