Experimental and Numerical Research on the Starting Characteristics of the High Altitude Simulation Ejector

SUN  Shunli; LI  Gang

doi:10.15892/j.cnki.djzdxb.2017.04.015

Journal of Projectiles, Rockets, Missiles and Guidance >

2017 , Vol. 37 >Issue 4: 63 - 67

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2017.04.015

PROJECTILES TECHNOLOGY

Experimental and Numerical Research on the Starting Characteristics of the High Altitude Simulation Ejector

SUN Shunli ,
LI Gang

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China Airborne Missile Academy, Henan Luoyang 471009, China

Received date: 2016-08-15

Online published: 2025-05-28

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Abstract

The starting characteristics of the high altitude simulation ejector of solid rocket engine was studied by using the experimental and numerical methods. The results of experiments and simulation showed that the startup hysteresis appeared in the startup process of ejector. The start-up characteristics of ejector were directly related to the change of internal flow pattern (shock position), while the driving force of the change of flow pattern was provided by the total inlet pressure of ejector. According to the analysis of the flow pattern, the normal shock theory was used to calculate the minimum starting pressure and minimum working pressure in the startup process. The results of normal shock theoretical analysis were close to the experimental and numerical results, which indicated that the normal shock theory could be used to calculate the starting characteristics of the ejector.

Key words： high-altitude simulation; active ejector; vacuum chamber pressure; starting characteristics; numerical calculation

Cite this article

SUN Shunli , LI Gang . Experimental and Numerical Research on the Starting Characteristics of the High Altitude Simulation Ejector[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2017 , 37(4) : 63 -67 . DOI: 10.15892/j.cnki.djzdxb.2017.04.015

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