The Chinese J-20 fighter performed a rare flight demonstration recently, showing off its manoeuvrability for the first time after the 2021 China Airshow. As promised, I am sharing this video with you to analyse the latest flight demonstration.

中國殲-20戰(zhàn)斗機在2021年中國航展后首次進行了罕見的飛行表演，展示了其機動性。正如我所承諾的，我將與大家分享這段視頻，以分析這次最新的飛行演示。

Last year, the J-20 made a strong impression with a flight display at the China Airshow. The Chinese military actually claimed the flight was somewhat restricted, not revealing the full capacity of the J-20, but it was still exceptionally impressive, including a few post-stall manoeuvres, such as Tail Slide. This time, the J-20 demonstration is low-key, but it is still a very interesting flight demonstration worth investigating further. The latest demo of the J-20 was carried about at the Air Force Achievement airshow in northern China. It started with the landing gear down, low altitude, low speed flypast, including low speed turning at an angle. That is mainly to show the low speed stability and manoeuvrability of the aircraft, which is the basis of having great anti-stall performance.

去年，殲-20在中國航展上的飛行表演給人留下了深刻的印象。中國軍方實際上聲稱此次飛行存在一定的克制，沒有展現(xiàn)殲-20的全部能力，但它仍然非常的令人印象深刻，包括一些失速后的動作，如尾滑。這次殲-20的演示比較低調(diào)，但仍然是一次非常有趣的飛行演示，值得進一步研究。殲-20的最新演示是在中國北方的空軍成就航展上進行的。從放下起落架開始，低空，低速飛行，包括低速轉(zhuǎn)彎。主要是展示飛機的低速穩(wěn)定性和機動性，這是飛機具有良好的防失速性能的基礎(chǔ)。

The J-20 also did low speed turns, likely at an angle of 40 or 50 degrees. Some analysts believe that the speed is similar to the landing speed of the S-U-27 fighter. The speed and altitude have been maintained, proving the J-20 can be very stable even at such a low speed. While doing so, a few J-20 control surfaces were not deflecting. That is an indication of good stability design at low speed. When all surfaces are in action, the pilot would be able to complete much greater manoeuvres, for example, swiftly pointing the nose at the enemy direction, then locking on and firing a missile. Adding to that, the J-20’s two V tails deflect inward together, generating a positive lift. The static stability of the J-20 at this moment is negative. The two canards are level; they are not even needed in this maneuver. The main wing slats are also level. In summary, the J-20 definitely has an impressive statically unstable design. Therefore, when all the surfaces are in action, the J-20 can perform exceptionally high-maneuver moves.

這架殲-20也做了低速轉(zhuǎn)彎，可能是40或50度角。有分析認為，這一速度與SU-27戰(zhàn)斗機的著陸速度相似。該速度和高度得到保持，證明殲-20即使在如此低的速度下，也可以非常穩(wěn)定。在此過程中，一些殲-20的控制面沒有偏轉(zhuǎn)。這是低速穩(wěn)定性設(shè)計良好的標(biāo)志。當(dāng)所有的表面都在工作時，飛行員將能夠完成更大的機動，例如，迅速地將機頭指向敵人的方向，然后鎖定并發(fā)射導(dǎo)彈。此外，殲-20的兩個V型尾翼一起向內(nèi)偏轉(zhuǎn)，產(chǎn)生正升力。這時殲-20的靜穩(wěn)定性是負的。兩個鴨翼是水平的；在這種機動中，甚至不需要用到它們。主翼板也是水平的?？傊瑲?20絕對有一個令人印象深刻的靜態(tài)不穩(wěn)定設(shè)計。因此，當(dāng)所有的表面都在工作時，殲-20可以執(zhí)行非常高的機動動作。

The next thing the J-20 did was a small angle climb plus a half loop, an integration of multiple manoeuvers. The half loop is similar to some post stall manoeuvres and only takes 3 seconds to complete. That demonstrates how quickly the J-20 can change course. Next, the J-20 performed minimal radius turns. At last year's airshow, the J-20 did that, too. This part proves this much larger, heavier, stealthy fighter can make a turn as quickly as an F-16 fighter with an air combat payload. And the F-16 is well known for its world-class maneuverability. This is downright impressive.

接下來，殲-20做了一個小角度爬升加上一個半環(huán)，綜合了多種機動。半環(huán)類似于一些后失速動作，只需要3秒就完成了。這證明了殲-20改變航向的速度很快。接下來，殲-20進行了最小半徑轉(zhuǎn)彎。在去年的航展上，殲20也做到了這一點。這部分證明了這種更大、更重、隱形的戰(zhàn)斗機可以像F-16戰(zhàn)斗機一樣快速地進行空戰(zhàn)。F-16以其世界級的機動性而聞名。這一點真是令人印象深刻。

This time, the J-20’s turning angle is around 80 degrees. The turn is steady, and the G force is roughly 6G. If we look at the angle of attack, control surface deflection, and engine thrust level indicated by nozzle status change, we can confirm that the J-20 is flying at an intermediate status and it matches the extreme performance of an F-16C fighter.

這一次，殲-20的轉(zhuǎn)彎角度在80度左右。這個轉(zhuǎn)彎很穩(wěn)定，重力大概是6G。如果我們觀察噴嘴狀態(tài)變化所顯示的攻角、操縱面偏轉(zhuǎn)和發(fā)動機推力水平，我們可以確認殲-20是在中間狀態(tài)飛行，它與F-16C戰(zhàn)斗機的極限性能相匹配。
原創(chuàng)翻譯：龍騰網(wǎng) http://mintwatchbillionaireclub.com 轉(zhuǎn)載請注明出處


Keep in mind that the J-20 has not yet received its designated turbofan engine or vector thrust nozzle. When these two improvements are delivered to the future J-20 variant, the fighter can achieve even higher maneuverability.

記住，殲-20還沒有收到為它指定的渦扇發(fā)動機或矢量推力噴嘴。當(dāng)這兩種改進交付給未來的J-20改型時，這種戰(zhàn)斗機可以實現(xiàn)更高的機動性。
原創(chuàng)翻譯：龍騰網(wǎng) http://mintwatchbillionaireclub.com 轉(zhuǎn)載請注明出處


The last part of the flight demo is a steep climb plus a high angle of attack roll. Some analysts point out that, observing the wingtip vortex, the J-20 is actually at a higher angle of attack when doing the climb and roll. Therefore, this is not just a basic climb and roll routine. If we look at these continuous screenshots of the flight, we can easily see that within less than 3 seconds, the J-20 has completed a 360-degree roll with a high angle of attack, and the nose direction of the J-20 has changed over 40 degrees per second. That is actually another proof of the J-20’s world-class post-stall manoeuvre capability. And this is why the J-20 pilot chose to perform this part; it tells everyone how great this fighter is.

飛行演示的最后一部分是一個陡峭的爬升加上一個大的迎角滾轉(zhuǎn)。一些分析人士指出，觀察到翼尖渦，殲-20在爬升和滾轉(zhuǎn)時，實際上攻角更高。因此，這不僅僅是一個基本的攀爬和翻滾動作。如果看這些連續(xù)的飛行截圖，我們很容易看到，在不到3秒的時間里，殲-20完成了大迎角的360度滾轉(zhuǎn)，機頭方向每秒變化超過40度。這實際上是殲-20世界級失速后機動能力的另一個證明。這就是為什么J-20飛行員選擇執(zhí)行這個部分；它告訴所有人這架戰(zhàn)斗機有多棒。

Lastly, again, this routine is completed without a great turbofan engine similar to what the US F-22 has, and there is no vector thrust control involved. For many people, they can’t wait to see what the ultimate variant of the J-20 can do in a flight demonstration.

最后，同樣，這套動作是在沒有采用類似美國F-22的大型渦扇發(fā)動機的情況下完成的，而且沒有涉及矢量推力控制。對于許多人來說，他們迫不及待地想要看到殲-20的終極改型在飛行演示中能做什么。