|Table of Contents|

Simplification for chemical reaction mechanism of liquid attitude and orbit control engine by PP method(PDF)

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

Issue:
2015年05期
Page:
61-66
Research Field:
研究与设计
Publishing date:

Info

Title:
Simplification for chemical reaction mechanism of liquid attitude and orbit control engine by PP method
Author(s):
WANG Darui;  CHENG Shengqing;  ZHANG Nan
Beijing Aerospace Propulsion Institute, Beijing 100076, China
Keywords:
attitude and orbit control engine;  monomethylhydrazine/nitrogen
PACS:
V434.13-34
DOI:
-
Abstract:
The method of principal component union multi-generation flux (PP method) is proposed in this paper to simplify reaction mechanism of monomethylhydrazine/nitrogen tetroxide with 43 species and 201 step elementary reactions. The simplified results of this method coincide well with the detailed mechanism calculated results (such as ignition delay time, equilibrium temperature, mole fraction of main equilibrium components) under typical conditions reported in foreign literature, which has laid the foundation for liquid attitude and orbit thruster combustion CFD study of the coupled chemical reaction. The comparison of the simplified result of the chemical reaction mechanism of three propellants (monomethylhydrazine/ nitrogen tetroxide, CH4 and O2, H2 and O2) indicates that the PP method is better than PCA and PFA. Its range to simplify mechanism is wider.

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