How to tell J 20 and J 31!

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The J20 above is a real shot**,The J31 below is a CG diagram drawn based on the real thing,But it's very close to the real machine.,So let's compare these two。

J20 is a canard wing layout, and there is a canard wing that can be deflected where the red circle is drawn, but J31 does not; The J31 has a regular layout, with a horizontal rear wing painted in blue, while the J20 does not;

The V-shaped vertical tail of J20 adopts a full-motion vertical tail, that is, a large vertical tail is movable, while J31 is not a full-motion vertical tail, only a small piece behind the vertical tail can be moved, as shown in the picture of the cyan part;

In addition, the J20 uses an integral cockpit canopy, that is, the arc-shaped glass of the cockpit is a whole, and the cockpit is opened as a whole when the cockpit is opened, while the J31 is not, and the cockpit canopy of J31 has a metal band in the middle, and the cockpit is separated from there when it is opened.

This is part of my summary of the differences between the two in terms of form factor, I hope it will be useful to you.

Chengfei's J-20 and Shenfei's J-31 are both fifth-generation fighters being developed in China.

The difference between them is still very big.

In terms of appearance, first of all, the size of the J-20 is larger, which is reflected in the length, wingspan, and wing area of the J-31. Secondly, the J-20 adopts a "canard layout", an obvious feature is that he has two full-motion canard wings, and the double vertical tail is also fully moving, and there are tail fins, while the J-31 adopts a conventional layout similar to the F-22 and F-35, which is characterized by trapezoidal main wings and inclined double vertical tails at the same time.

In addition to the difference in appearance, the situation with the production and test flights of the two aircraft is also very different. The J-20 and two batches of a total of 7 aircraft were produced, from the 00 batch of demonstrators (2 aircraft) to the 01 batch of prototypes (5 aircraft). The test flight has also completed a number of projects, and the first aircraft of the verification aircraft has also completed Yan Liang's test flight, indicating that the J-20 has been selected by the Air Force.

Since the start of the first verification aircraft marked 2001, each one has been changed, since the 01 batch 2011, the changes have been increasing, since 2012, the paint has changed from black to gray, indicating that the absorbing material has been applied, the airspeed tube has been canceled in 2013, and the two aircraft changes in 2015 and 2016 have been very ** Ming J-20 has been basically finalized. It's very close to the equipment.

The J-31 is still only in the stage of verification aircraft, the frequency of test flights is still relatively low, and only two verification aircraft have been produced.

First, to clarify, the so-called J31 is not the first project, it is an export fighter developed by AVIC, and Lin Zuoming, the boss of AVIC, also said at the Zhuhai Air Show that this product is called FC31, please don't call him J31, he is not qualified.

Second, the engine problem, the FC31 now uses the RD33 engine, which is above the Maozi MiG-29.

The J20 currently uses a Taihang engine, which will be replaced by a WS15 (Emei engine) in the future

Thirdly, the export prospects of FC31. I'm very unoptimistic, it's not that I hacked him, this product is purely a 30-pound noodle made of longevity peaches, waste snacks. Just from the demand, it can be seen that there is no market.

The fourth-generation aircraft is very expensive, the price of the bare metal is at least 80 million US dollars (three and a half generations of **), according to the general law, the life cost of the aircraft is twice the price of the bare metal. In other words, the life-cycle cost is $200 million.

China's traditional export markets are poor countries, who can afford it? The reason why the J7 can endure is that it is cheap. The J7 sold to Nigeria is less than $5 million each, but why can't the JF17 be sold? Or the ** factor.

Think about it, the JF17 that is only 15 million US dollars can't be sold, and you want to sell the 200 million US dollars FC31 isn't it a fool's dream?

In the current military aircraft market, the high-end market is American, because procurement is linked to politics; The only one left with a little money is India, and India will buy China**?

Fourth, the aerodynamic shape of the J20.

This is related to the design idea of J20. The Air Force's requirement is to intercept the F22 based on territorial air defense and relying on a powerful radar and reconnaissance system

To this end, in the case of no engine power, the J20 lengthens the fuselage and adopts a full-motion tail and canard wing to enhance flexibility.

Emphasizing frontal stealth ability, you can give it a go with the F22.

In fact, looking at the video screen of J20, you can find that his turning radius is very small, and he does not lose height, and he is very flexible, which is dozens of distances away from Chang'an Avenue stronger than FC31.

The J20 should be mainly for air combat, you look at its vertical wing, fully moving, should be given for its maneuverability.

Hehe, Xiao Yu, I finally found you Now it's too miserable for me to ask More than 100 credits have been lost to help me support the trick Follow-up: I have more than 7,000 points.

It can be said that it is, but J20 is confirmed by the state, while J31 is not sure, and it is possible to get off the horse.

The J20 is a heavy fighter, the J31 is a medium fighter, and the tasks they undertake are different, so they cannot be compared, if you want to force the comparison, it should be the J20 stronger, you can roughly know if you look at the difference between the American F22 and F35.

One focuses on ground-to-sea attacks, with a bomb load and a large range. One focuses on air superiority and is small in size, suitable for boarding and exporting.

There is no doubt that the goal of J20 and J20 is to challenge F22

The so-called J31 is not a national project, it was made by a certain group itself, that is, the Air Force does not want it, this product is a joke at present, the four are not like, whether it can be done is still a problem, even if it is done, it is estimated that it will be the same as the MiG-29.

And don't hold on to the principle of high and low matching, which does not exist in the Chinese Air Force at present. The J10 is a medium-sized fighter, but he is a supremacy fighter, and the Su-27 series is PK with him, which is basically lost, and there are reports from the official eight shares. Due to their large bomb load, the Soviet series fighters play a multi-purpose role in the Air Force, which is what others say is a drop in the mix of high and low.

Planes that can bomb Japan are good planes.

yanghui0512 Hu Jijiao said! The J-31 is a twin-engine heavy fighter, and the J-20 is a stealth fighter-bomber, which is similar to the Flying Leopard, and its mission is to penetrate bombing, including ground and sea. And the J-31 is a fighter, what it provides is to protect the bomber for the J-20 escort, and since they are both stealth fighters, they can form a formation.

Their combination is similar to that of the F-22 and F-35.

The high-pressure self-adhesive tape of Yongshi tape is divided into 10 and 20, the difference is that the composition content of the rubber is different, and the tensile force of the tape is different.

So if you refer to the ATF and JSF timelines, it is the most optimistic estimate.

It took 7 years for ATF to go from DEM Val to EMD, and then about 8 years for IOC.

The F-35 went from the X-Plane War to the AF-1, which was probably 7 years; Then the Air Force IOC was supposed to be sometime after 2016.

As for the J-20, it is still a question whether the J-31 will survive.

At least after 2020, this objectively huge gap is destined to make little sense for simple comparisons.

Generally, it takes five or six years to test and find all kinds of hidden problems, and then it is in service.

The first step of the long march Theoretically, miscarriage is also possible, and I estimate that all 2 models are in service and are estimated to be in service until 2020.

It is still at the experimental stage and will take a few more years to enter service.