Chinese sci-fi blockbuster The Wandering Earth 2 has been released around the world. In this movie, there is a vertical takeoff and landing J-20 stealth fighter, and it is a two-seat version. The fuselage has a huge lift fan, and two main engine tail nozzles can be pointed downward. Some jokingly call it a hybrid of the American F35B and the Chinese J-20.

中國科幻大片《流浪地球2》已在全球上映。這部電影中有一架垂直起降的殲-20隱形戰(zhàn)斗機，而且是雙座版本。機身有一個巨大的升力風扇，以及兩個可以指向下方的主發(fā)動機尾噴管。有人戲稱它是美國F35B和中國J-20的混合體。

To be honest, the development of a J-20 vertical take-off and landing version is almost impossible, because the basic J-20 design has been finalised for years, and even the latest variant of the J-20B only has a modified canopy and rear fuselage, which is unlikely to accommodate the huge lifting fan.

說實話，研制殲-20垂直起降型幾乎是不可能的，因為殲-20的基本設計已經定型多年，即使是殲-20b的最新改型，也只是改裝了座艙蓋和后機身，不太可能容納巨大的升力風扇。

In addition, the U.S. F-35 has a vertical takeoff and landing version because the U.S. Marine Corps is limited to amphibious assault ships and cannot use conventional takeoff and landing carrier-based fighters. In China, where the military divide is not as deep as it is in the United States, the Chinese can combine aircraft carriers with amphibious landing forces so that conventional fighter jets can serve the Marines directly.

此外，由于美國海軍陸戰(zhàn)隊僅限于兩棲攻擊艦，不能使用常規(guī)起降的艦載戰(zhàn)斗機，所以美國F-35有垂直起降型。在中國，軍種的分歧不像在美國那么深，中國人可以將航空母艦與兩棲登陸部隊結合起來，這樣常規(guī)戰(zhàn)斗機就可以直接為海軍陸戰(zhàn)隊服務。

In fact, the F35B is equipped with a lift fan that severely affects the amount of fuel and ammunition it can carry inside, which is not a good choice from a purely military perspective. In addition, the world's successful VTOL fighters are basically single engine layouts, which include the French Mirage 3 variant, the British Harrier, the Soviet Yak-38 and Yak-141, and the F35.

事實上，F35B裝備的升力風扇嚴重影響了其內部所能攜帶的燃料和彈藥量，從純粹的軍事角度來看，這并不是一個好的選擇。此外，世界上成功的垂直起降戰(zhàn)斗機基本都是單發(fā)布局，包括法國的幻影3改型、英國的鷂式、蘇聯的雅克-38和雅克-141，以及F35。

Finally, after the trailer for The Wandering Earth 2 aired, viewers pointed out that the lift fan hatch on the J-20 was closed too early. The crew took this seriously enough that they quickly changed the animation in the full film to correct the mistake. This shows that the Wandering Earth 2 crew have a wonderful attitude about their work. I strongly encourage you to watch this film in cinemas.

最后，在《流浪地球2》的預告片播出后，觀眾指出殲-20上的升力風扇艙口關閉得太早。攝制組非常重視這個問題，他們迅速修改了整部電影中的動畫來糾正這個錯誤。這表明《流浪地球2》劇組對他們的工作態(tài)度非常好。我強烈建議你去電影院看這部電影。