China Science and Technology Aerospace "Lie Jian No. 2" rocket circulation pre -cold test will be successful a

2024-12-31 23:32:50|Myriagame |source：minecraft skins

IT House News on November 16, China Science and Technology Aerospace issued a post last night that recently, the Liccant No. 2 liquid carrier rocket recycling pre -cold test was successfully completed at the China Science and Technology Aerospace Test Center.

Pre -cooling is an important measure for low -temperature liquid rockets to ensure that the engine meets the starting temperature requirements. The pre -cold temperature is a technical indicator that must be guaranteed before the engine starts.The power system of Lie Jian II uses a circular pre -cold method. After the engine, set up a pre -cold backflow pipeline to form a circular circuit with the conveying pipeline, thereby ensuring the engine oxygen inlet temperature.

The test system includes analog storage tank, pipeline system, engine simulation piece, injection gas supply system, measurement and control system, etc., which mainly verify the design of circulating pre -cold and the design of the spinker.Two types.

The test simulates the pre -cold characteristics of the primary and second -level pre -cold systems, and obtained key technical indicators such as traffic and temperature, mainly including:

Obtaining the pushing doses flow data under different 氦 radiation flows, it provides data support for the determination of the radiation flow of the 氦 氦 on the arrow;

The pre -cold flow data of the exhaust valve was opened and closed in the case of the storage tank, which determined the effect of opening and closing the exhaust valve on the storage box, and provided a basis for determining the time sequential time of the air exhaust valve closure;

After obtaining the relationship between different 氦 radiation flow and the rising pressure of the gas pillow pressure of the storage box, the calculation model is found to determine the basis for determining the pre -shooting related timing.

The successful success of this experiment has important guiding significance for the setting of pre -cold parameters in the subsequent power system trial and flying test.

Li Jian No. 2 official introduction:

Lie Jian No. 2 is a medium -sized liquid carrier rocket independently developed by China Science and Technology Aerospace. Through the "three -way" design of the generalization, series, and combined, it is a large -scale constellation networking construction and response to low -cost cargo transportation for the future.A large transportation, high reliability, and low -cost liquid carrier rocket built by demand uses a CBC configuration. The universal core diameter is 3.35 meters, the total length is 53 meters, the take -off weight is 625 tons, and the take -off thrust is 766 tons.

SSO's launch capacity is 8 tons, LEO's launch capacity is 12 tons. It has the ability to synchronize the solar synchronization, near -ground track, and transfer orbit launch capacity. It will further enhance my country's ability to enter the space in low -cost and large -scale into the 3.0 era.At present, Liejong No. 2 liquid carrier rocket has entered the large -scale ground test verification period at the engineering development stage and is planned to fly first in 2025.

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