The H80, which was more suitable than the H50 for use as a third stage engine, now also faced its first actual test.
The numerical suffix of the H80 represented ground thrust, and its vacuum thrust could reach 112 tons, roughly equivalent to the J-IIB engine of Saturn V's second stage rocket.
On August 14th, two days after the launch of CZ-10, New Yuan Aerospace Launch Site's No. 2 position was propping up a New Yuan No. 3.
This New Yuan No. 3 carried only a second stage, and this second stage was the recoverable one mentioned by Guo Shen.
Following Guo's initial idea, in the midst of the four H240 engines, a newly improved H80 engine from the H50 was squeezed in.
The appearance of this second-stage rocket also greatly differed, its entire outer surface turning black to endure atmospheric ablation, thanks to a simplified heat-resistant layer derived from the H2 space shuttle's heat-resistant tiles.
