|Table of Contents|

Simulation on thrust/drag property in different modes of RBCC engine(PDF)

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

Issue:
2022年06期
Page:
52-58
Research Field:
目次
Publishing date:

Info

Title:
Simulation on thrust/drag property in different modes of RBCC engine
Author(s):
YANG Jianwen LIU Jiwu ZHANG Mengzheng NAN Xiangjun
(Key Laboratory of Science and Technology on Liquid Rocket Engine, Xian Aerospace Propulsion Institute, Xian 710100, China)
Keywords:
rocket-based combined-cycle work mode thrust drag simulation research
PACS:
V435
DOI:
-
Abstract:
Combustion flow of a RBCC test model was simulated through the three-dimensional numerical methods.Good agreements between computation and experimental results were obtained for wall static pressure distribution, validating that the numerical scheme employed is reliable.Results show that, to the same flow conditions, when the engine works properly, the air mass flux and the drag of the inlet are the same under different model.For the cold flow model, although the nozzle produced some thrust, but the inlet and combustor produced much more drag, so the engine will produce drag.For the rocket model, rocket will have ejector effect, and the ejector air will combustion again with the rocket gas, the engine thrust will be larger than the rocket thrust, and have 12.7 thrust gain.For the ramjet model, when the residual gas coefficient decreased, the engine thrust will increase.

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