|Table of Contents|

Theoretical analysis on scaling relation of components for rocket ramjet combined engine(PDF)

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

Issue:
2018年02期
Page:
18-22
Research Field:
研究与设计
Publishing date:

Info

Title:
Theoretical analysis on scaling relation of components for rocket ramjet combined engine
Author(s):
DU Quan1; 2; FU Xiuwen1; 2
1.Xi'an Aerospace Propulsion Institute, Xi'an 710100,China;2.Science and Technology on Liquid Rocket Engine Laboratary, Xi'an 710100, China
Keywords:
rocket ramjet combined engine;  scaling relation;  hydrocarbon fuel;  engine size
PACS:
V430-34
DOI:
-
Abstract:
Based on the operating principle of each component for rocket ramjet combined engine, the scaling relation of components for rocket ramjet combined engine was theoretically analyzed, and the scaling relation between the components of small size engine and midsize engine or large size engine was established to make the test results of small size rocket ramjet combined engine support the development of large size engine. The analysis results show that the scaling relation of the hydrocarbon fueled rocket ramiet combined engine is different from the pressure-length scaling relation of hydrogen fueled scramjet engine; the scaling relation of all the components for the two kinds of engines is obviously different; geometric scaling relation can be adopted for the intake and exhaust system; the scaling of isolator, fuel injectors and flame stabilizing device abides by different scaling relation; the penetration depth of liquid fuel is linear relation with engine size, but the atomization and evaporation of liquid fuel has no relation with engine size; the scaling of thrust chamber can be realized by changing the number of thrust chambers according to the scale factor.

References:

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