Comparison of Different Engine Versions of the Y-20, the Reason Behind the "Toothpick" Nickname

The Y-20 with the D-30KP-2 engine version and the Y-20 with the WS-20 engine version, the nickname "toothpick" is not without reason.

Strictly speaking, the D-30KP-2 engine cannot be considered a high-bypass engine, only a medium-bypass one. The diameter of the D-30KP-2 is 1.45 meters, while the diameter of the WS-20 exceeds 2 meters. From the picture, it is very obvious to see the diameter ratio between the two engines. Therefore, the nickname "toothpick" for the D-30KP-2 is not baseless.

Compared to the D-30KP-2, the WS-20 not only increases thrust but also significantly improves the power supply of the engine. The main reason why the KJ-3000 is based on the Y-20B is that the power platform has been upgraded to the WS-20. The power and cooling requirements of the early warning aircraft are far beyond those of the transport aircraft. Obviously, the level of the D-30KP-2 or the WS-18 is unable to meet the power demand of the KJ-3000.

Original article: https://www.toutiao.com/article/1836188256436224/

Statement: This article represents the views of the author himself.