|Table of Contents|

Analysis of scramjet characteristics in ground experiment(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年06期
Page:
73-81
Research Field:
目次
Publishing date:

Info

Title:
Analysis of scramjet characteristics in ground experiment
Author(s):
CHEN Lei1;  LI Guangxi2;  LIANG Junlong1;  WANG Yufeng1;  DU Quan1;  LI Jianghan1
1.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China; 2.Academy of Aerospace Propulsion Technology, Xi'an 710100, China
Keywords:
scramjet engine;  direct connection experiment;  free flow experiment;  inlet flow pattern;  inlet-engine matching;  engine performance
PACS:
V235.21
DOI:
-
Abstract:
Direct connection experiment and free flow experiment are the two most common experiments in the ground simulation experiment of scramjet engine.By comparing the concrete simulation of two kinds of experiments, it indicated that the operating parameters of the heater and incoming flow components meet the experiment requirements.On this basis, the performance of the same type of scramjet in these two kinds of experiments was analyzed, and combined with the numerical simulation analysis results to carry out the discussion.The results show that, in the two kinds of experiment, the flow pattern of the inlet is consistent.In terms of the working characteristics of the inlet and engine matching, the position of the ending shock wave in the free flow experiment is generally far behind, and its safety margin is higher than that in the direct connection experiment.The engine specific impulse ratings obtained from the two types of experiments are similar.The results show that the relative accuracy of engine performance can be obtained by the method based on the static pressure along the direct connecting experiment.

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