|Table of Contents|

Experimental investigation of premixed combustion characteristics of N2O/C2H4 propellants(PDF)

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

Issue:
2019年03期
Page:
41-47
Research Field:
研究与设计
Publishing date:

Info

Title:
Experimental investigation of premixed combustion characteristics of N2O/C2H4 propellants
Author(s):
ZHANG Feng;  YANG Weidong;  HU Hongbo;  YANG Anlong
(Xi'an Aerospace Propulsion Institute, Science and Technology on Liquid Rocket Engine Laboratory,Xi'an 710100, China)
Keywords:
nitrous-oxide-based composite mono-propellant;  ethylence;  porous material;  premixed combustion;  characteristic velocity;  combustion efficiency
PACS:
V312
DOI:
-
Abstract:
Nitrous-oxide-based composite mono-propellant is a new, non-toxic, mono-propellant with high performance and broad application prospects.A series of premixed combustion tests with N2O/C2H4 propellants were carried out, covering the mixture ratio range of 6.2～10.6 at the chamber pressure of 0.7 MPa and 1.0 MPa.The effects of the mixture ratio and the combustion chamber characteristic length on the characteristic velocity and the combustion efficiency were obtained.The results showed that, the anti-flashback effect of stainless steel porous materials with the equivalent pore diameter of 65 μm and the thickness of 5 mm was so good that no flashback occurred in all combustion tests.The theoretical and measured characteristic velocity decreased with the increase of the mixture ratio.The maximum combustion efficiency was 95.0%.As the combustion chamber characteristic length increased, the combustion efficiency increased first and then decreased.For the model combustion chamber studied in this paper, the best combustion chamber characteristic length was about 1.675m.

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Last Update: 2019-06-30