Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens for the delivery of clues on the way! CTOnews.com, September 18 (Xinhua) according to the official Science and Technology Weibo of the Science and Technology Committee of the China Aerospace Science and Technology Corporation, US rocket company Stoke Space today conducted a jump test on a reusable rocket second-stage prototype at the test site of the Stoke Aerospace Company in Moses Lake, Washington.

The altitude of the test was about 9 meters and landed in the scheduled landing area 15 seconds after take-off. The rocket has a very unique design and looks like a "stainless steel jar", a "100% reusable" rocket with a turnaround time of only 24 hours. The data show that it has a carrying capacity of 1.65 tons and can be fully reused in low-Earth orbit.

This experiment verifies the new hydrogen / oxygen engine annular multi-thrust chamber structure, regenerative cooling heat shield, vector control system, flight software and ground system, which proves that the novel scheme is technically reliable.

Traditional two-stage rocket engines have a larger bell-shaped nozzle to optimize the flow of engine exhaust in a vacuum, but such extended nozzles are often quite fragile because they are only exposed above the Earth's atmosphere.

To protect the large nozzle, Stoke used a ring of 30 smaller thrusters.

In a vacuum, plumes from these nozzles are designed to merge and act as a whole. When re-entering the atmosphere, it is easier to protect the nozzle because of the small number of small thrusters launched.

In addition, in order to protect the entire aircraft from the ultra-high temperature atmosphere during re-entry, Stoke chose a heat shield that tried to regenerate and cool. The malleable metal outer layer of the aircraft will have a small cavity to allow the propellant to flow through the material and keep it cool as it re-enters the atmosphere.

It is worth mentioning that the company's expected final product will look like this, which may not be quite the same as the rocket in the minds of most CTOnews.com users, but it is also a feasible technical route:

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