Military tungsten alloy jet has good corrosion resistance, long service life, excellent performance and high cost performance, which is not easy to wear. It has a series of advantages, especially its high hardness and good wear resistance. Even under the temperature of 500℃, it is basically remain the same, and it has high hardness at 1000℃.
Military tungsten alloy jet is the important part of thrust chamber. Its first half is shrunk to a narrow throat by the middle into small. And the expansion of rocket to the bottom after a narrow throat from small to large outward. The rocket body by high pressure gas into the nozzle of the first half, after passing through the narrow escape from the latter part of the larynx. This structure allows the air flow velocity due to changes in cross-sectional area of the discharge varies from the airflow to subsonic speed of sound, until accelerate to supersonic speed.
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