ehh... Guys, I don't know Chinese, but this vid was recently uploaded on
sina.
Link to video:
https://k.sina.cn/article_5941687237_m16226f3c503300ri9v.html
Translation:
"Sea Four Generations" finally appeared! FC-31 is a positive result ...
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FC-31 will soon become a carrier-based aircraft?
The fuselage usher in major changes, painted in navy gray!
All along, the debate about who is the fourth generation of stealth carrier aircraft in China between the F-20 and FC31 is enduring. However,
recently the FC31 Falcon verification machine suddenly appeared in a new coat. Could it be that China stealth carrier aircraft The battle finally came to fruition?
Judging from the photos exposed this time, there is still a considerable gap between the current FC31 Falcon Eagle verification machine and the true carrier-based aircraft standard. When the Falcon Eagle debuted, people found that the front landing gear of this verification machine
used a two-wheel structure. This design can allow the fighter to withstand more descent rates, and it is indeed convenient for the ship to transform.
But if you want to become a carrier-based aircraft, you don't just need to modify the landing gear. Take the wing, for example, due to the limited hangar and deck space of the aircraft carrier, the fighter wing needs to have a folding function to save space. The exposure of the Falcon verification machine can be clearly seen. Segment flaps are not two-stage flaps designed to facilitate folding.
The second is the wing area. If you want to put the fighter on board, there is an indicator that is very important, that is, the landing speed, or the stability of low altitude and low speed. Due to the limited length of the aircraft carrier deck, the distance that can be left for the carrier aircraft to decelerate is very short. They all rely on the blocking cable to force the carrier aircraft to slow down.
However, the pulling force that the blocking cable and the carrier aircraft can withstand is also limited. As we all know, the higher the speed, the greater the kinetic energy carried by the object. This requires that the landing speed of the carrier aircraft cannot be too fast, otherwise the blocking cable will be broken. Or the body of the carrier aircraft itself.
And if the stability at low altitude and low speed is good, it is more convenient for the pilot to control the landing of the aircraft more smoothly.
The most critical point for slowing down the landing speed of the fighter is to increase the lift. At present, there are two methods. For the conventional layout carrier aircraft such as Falcon, it is to increase the wing area. The other is the use of duck wing aircraft, fighters with duck wings have better innate low-speed performance. For example, the prototype of China's J-15 fighter, Su 33, is Su 27 to add a pair of winglets to increase the lift of the head to reduce the landing speed.
Taking the US F35 fighter as an example, the US Navy increased the wing area of the basic model F35A fighter from 42.7 square meters to 57.6 square meters in order to allow the F35 fighter to board the ship, which is 30% more. This is the US Navy ’s F35c fighter. .
Another point lies in the side magazine. Currently, the Falcon verification machine that is publicly disclosed generally does not have a side magazine design, which means that it cannot be hung on short-range air-to-air missiles. The US Navy F35c carrier aircraft also does not have a side magazine. This leads to F35c if you want to mount AIM9x fighting bullets, you must use an external rack, which is extremely inconvenient and not to mention, it will also destroy stealth performance.
The Falcon itself, as a twin-engine medium engine, takes up too much space on its two engines, and its belly magazine capacity is limited. If there is no side magazine, the weapons that it can mount will be greatly reduced. At the same time, the engine is also a big problem. If the Falcon verification machine can meet the above conditions for becoming a carrier-based aircraft, it will inevitably have a consequence that the weight of the fighter will increase significantly.
Taking the US F35 as an example, the empty weight of its basic model F35A is only about 13.1 tons, while the empty weight of the F35c fighter as a carrier aircraft suddenly increased to 15.6 tons, which is more than 2.5 tons! According to public information, the Falcon Verifier has an empty weight of 12.5 tons. If the above improvements are made, the weight may not be lower than F35c.
But the problem is that the Falcon Eagle currently uses the Russian RD93 engine, and the single thrust is only about 8.3 tons, while the F35c fighter ’s F135 engine has a single thrust of more than 18 tons, which means that the thrust of the two Falcon eagle engines together It ’s no match for the F35c. Now the mobility of the F35 series of fighters has been questioned. Unless the Falcon replaces the engine with a higher thrust, its mobility will only be worse than that of the F35c.
In fact, judging from these conditions, the J-20 is indeed more suitable for boarding than the Falcon. Its changes are also the smallest. The J-20 magazine is large enough, the fuel tank is large enough, and the low-altitude and low-speed performance is also very good. Improvements in landing gear and corrosion protection are required.
In general, Brother Hu believes that if you want to transform the current Falcon verification machine into a qualified carrier-based aircraft, one needs to increase the wing area while allowing the wings to fold, and the other is to need a larger For the magazine, the third is to replace the engine with greater thrust. Taking into account the range problem, it is even necessary to enlarge the structure of the fuselage to ensure sufficient internal oil space.
However, after such an improvement, I am afraid that Falcon will bid farewell to the positioning of the mid-size aircraft. This is the case with the F35c fighter opposite the ocean. Although it is a single release, its maximum take-off weight has reached 31.8 tons, which is almost the same as the J-15. There is nothing wrong with the heavy machine. So the question is, after such a big change, can Falcon Eagle be called Falcon Eagle? (Shun)
https://new.qq.com/omn/20200422/20200422A05UJG00.html?pc
