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

CTOnews.com October 19 news, the domestic private rocket company Blue Arrow Aerospace Science and Technology Co., Ltd. announced that recently, the "Tianque" vacuum liquid oxygen methane engine (TQ-15A) successfully completed the first full-system thermal test in Huzhou, which lasted 20 seconds. During the test, the engine started and shut down normally and worked smoothly.

According to reports, TQ-15A is currently the vacuum type liquid oxygen methane engine with the largest thrust in China, and the vacuum thrust reaches 836kN. It is the second batch of two-stage main engine of Vermilion Bird II rocket. Compared with the existing two-stage engine layout scheme of 80 tons + 10 tons, the swimming engine TQ-11 is eliminated, and the main engine is changed from non-swinging to pump forward swing, thus reducing the complexity of the two-stage engine system and reducing the total weight by about 400kg. The thrust chamber further increases the nozzle area ratio, and the turbine exhaust is introduced into the large nozzle of the thrust chamber for cooling, which solves the problem of interference caused by turbine exhaust. The vacuum thrust of the TQ-15A engine is increased by 9%, the vacuum specific impulse is increased by 130m / s, the thrust adjustment range is widened to 55% and 110%, and has the ability to start three times, which can greatly improve the adaptability of the rocket launch mission.

▲ diagram from Blue Arrow Aerospace, the same as this TQ-15A engine with servo mechanism without large nozzles, this test focuses on examining the feasibility of the improvement scheme of the engine system, final assembly and various assemblies, verifying the correctness of the starting and shutdown time sequence, and obtaining the measured performance data and working characteristics of the engine. The engine starts and shuts down according to the predetermined program, works smoothly, and achieves the expected design goal.

This round of commissioning plans to carry out five tests (including two multiple starts), with a cumulative test time of 970 seconds. After the first test run, it will continue to examine the long-range working reliability of the engine, the working adaptability of large-scale thrust regulation, the working coordination of the engine and servo system, multiple starting, high and low inlet pressure and supercooled propellant and other conditions of the engine working adaptability, fully verify the engine design scheme. The performance data of the engine under the condition of large nozzles are obtained.

CTOnews.com learned that Blue Arrow Aerospace said that the Vermilion Bird II carrier rocket has completed the research and development of the first batch of rocket technology since it was established in September 2017. At present, the Vermilion Bird-2 Y1 rocket has left the factory and completed the cryogenic filling exercise, and the final assembly of the Y2 rocket is being carried out at the Jiaxing Blue Arrow Space Center. On this basis, the company's R & D team developed and iterated and optimized the second batch of rockets to make them have better performance and higher reliability.

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