What kind of fighter is the J 15

J-15 - Introduction The J-15 fighter is a vertical take-off and landing fighter, which can be said to be the first fighter of its kind in China. The aircraft has good over-stall maneuverability, good flight quality at high angles of attack and effective control means are the two necessary foundations, J-15 fighter has excellent supersonic cruise capability, combat performance in the face of the current aircraft has obvious incomparable advantages. Its main disadvantage is that it is too sophisticated and the maintenance performance is cumbersome, which is also a common problem of high-performance fighters.

In general, this is a killer-class fighter, which can be divided into manned and unmanned modes depending on the mission. J-15 - development background The prototype of the J-15 fighter is a single-seat twin-engine carrier-based fighter - Su-33 fighter developed by the former Soviet Sukhoi Design Bureau on the basis of the Su-27. The Su-33 "Flanker-D" fighter (Su-33 "Flanker-D") is a single-seat multi-role carrier-based aircraft developed and produced by the Russian company Sukhoi.

Since the Su-33 is one of the carrier-based aircraft derived from the Su-27 fighter, it continues the NATO code name of the Su-27 and is called Flanker-D. The Su-33 made its first flight in May 1985. On September 11, 2009, the U.S. "Center for International Strategy and Assessment" published an article by Richard Fisher, analyzing the new changes in the relative position of Chinese and Russian military aviation.

According to the article, in early September 2009, there were rumors on the Chinese Internet that Shenfei's new fighter was similar to the Su-33, or J-15, and made its first flight at the end of August.

There is such a name, but there is no such model.

China's J-10 is good enough (it is said that a J-10 will run 5 Su-27s during exercises), and another J-15 will be even better.

The maximum flight speed of the J-15 is Mach, that is, times the speed of sound.

However, this is not to say that the aircraft is at any flight altitude.

They are capable of flying at times the speed of sound.

This is because the speed of sound is positively variable with air temperature, i.e., the higher the temperature, the denser the air.

The larger, the greater the speed of sound. at standard atmospheric sea level.

The speed of sound is 340 meters per second; As the altitude increases, the air temperature decreases, and the speed of sound decreases.

Assuming that the J-15 aircraft is at an altitude of 8000 meters, its speed is capable of reaching times the speed of sound. However, when the J-15 aircraft is flying at a low altitude of 1000 meters, due to the increase in air temperature, the density of the air increases, and when the aircraft has not yet reached Mach flight, its aerodynamic (dynamic pressure.

If it is very large, it will deform the body of the aircraft, and if the speed continues to increase, the aircraft may disintegrate.

That is, if the aircraft can reach the maximum number of m at a certain altitude, then flying below this altitude, it can only fly at less than the maximum number of m. The lower the height, the smaller it is. Therefore, the so-called flight m number can only be reached when flying at a certain altitude.

The speed of sound at this altitude is already much smaller than the speed of sound at standard sea level (340 m/s).

Therefore, if someone says that the maximum m number of an airplane is 2, they think that the maximum speed of the airplane is 680 meters and seconds. This is not possible, and its actual maximum true speed is much smaller.

Supplement: The air temperature at 8000 meters is -35 degrees Celsius.

The speed of sound is meters and seconds. The speed of sound is the meter second, or kilometer hour. , less than 340 m-s (816 m-s, i.e. kilometers per hour).

<> "How about the performance of the J-15?

The J-15 carrier-based aircraft is a carrier-based fighter developed by China on the basis of the J-11B fighter and with reference to the Su-33 carrier-based aircraft.

In terms of aerodynamic layout, the biggest difference between the J-15 and the J-11B is the addition of a canard front wing design. During the flight, the canard front wing and flank strips can form a controllable separation vortex at large angles of attack, disturbing the upper surface of the main wing, thereby effectively improving the lift coefficient. This can not only improve the J-15's airborne take-off and landing capability, but also improve the longitudinal pitch control response performance during maneuvering flight, and greatly improve combat mobility.

In addition, the folding wing design of the J-15 differs from that of the Su-33 carrier-based crypto-friendly nuclear aircraft. The folding hinges of the wings are relatively outward, which is of great significance for improving the flight performance and combat effectiveness of the J-15. In terms of power system, the early J-15 mainly used AL-31F engines imported from Russia, which consumed a lot of fuel; Part of the J-15 aircraft uses carrier-based "Taihang" WS-10H engines adapted to the marine environment.

The thrust-to-weight ratio of the Taihang engine is greater than 8, and the thrust is greater than 140kN, which has exceeded the maximum thrust of the AL-31F3 engine. Compared with the Su-33 carrier-based aircraft, the flight performance of the J-15 fighter equipped with Taihang engine has been significantly improved. It is reported that the J-15 has a maximum flight speed of Mach, a range of 3,500 kilometers, and a maximum take-off weight of 32,500 kg.

In terms of the first system, the J-15 adopts an integrated domestic first system. It has 12 attachment points, which can carry and use Thunderbolt-8 9 short-range air-to-air missiles, Thunderbolt-12 active radar-guided long-range air-to-air missiles, Yingji-91 supersonic long-range anti-ship anti-radiation missiles, Yingji-8 air-to-ship missiles and other domestic precision strikes**, KD-88 long-range air-to-surface missiles, Feiteng-2 anti-radiation missiles and Thunderstone series of stupid guided bombs. In terms of avionics, the J-15 should at least be equivalent to the J-11B.

The maximum flight speed is Mach.

1.The J-15 is a standard heavy carrier-based fighter with a length of meters, a wingspan of 15 meters, a height of meters, an empty weight of back to tons, and a maximum take-off weight.

A: 33 tons, the engine is 2 AL31 high-thrust turbofan engines, the maximum flight speed is Mach, the practical ceiling is 20,000 meters, the maximum range is 3,500 kilometers, the maximum overload is 8G, the airborne ** is 1 30 mm cannon, and there are 12 ** external attachment points under the wings and belly, which can be mounted with various air-to-air missiles and anti-ship missiles, as well as rockets and aerial bombs.

2.The upper wing of the aircraft protrudes, the lower part is straight This result determines that when the aircraft is started, the air flow speed above the wing is fast, the air pressure is small, and the air pressure direction is downward; The air flow velocity under the wing is slow, the air pressure is strong, and the air pressure direction is upward, so that the upper and lower surfaces of the wing produce an upward pressure difference, providing lift for the aircraft

The J-15 is copied from the Su-33, which has a maximum speed of 2300 km/h and is Mach. The J-15 is also this performance.

Mach One Mach is twice the speed of sound and is approximately equivalent to 1225 km h