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Performance analysis of hydrazine ATR with different dissociated ratios of NH3different (PDF)

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

Issue:
2019年02期
Page:
16-19，52
Research Field:
研究与设计
Publishing date:

Info

Title:
Performance analysis of hydrazine ATR with different dissociated ratios of NH3different
Author(s):
ZHANG Liuhuan;  MA Huajie;  ZHOU Jianping;  NAN Xiangyi;  LI Guangxi
(Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
Hydrazine;  ATR;  dissociated ratio of NH3
PACS:
V439
DOI:
-
Abstract:
Based on hydrazine ATR, performance analysis of hydrazine ATR with different dissociated ratios of NH3(x)was presented here.And the calculation and comparison about performance of ATR with different x were carried out.The results show that as x increases, temperature of gas decreases which is dissociated from hydrazine by catalysis, mass percentage of H2, N2 increases, and the value of specify heat ratio and gas constant goes up.On the ground state, the specify impulse of ATR increases as x decreases under the same rev.When the physical rev is 100% and x=0.29, the specify impulse reaches top 808s, which is 7.3% higher than that at x=0.8, and the mass flow rate of hydrazine is 0.999 kg/s, which is 7.33% lower than that at x=0.8.Under the condition of high altitude, the specify impulse of ATR increases as x decreases under the same rev.The specify impulse and mass flow rate, with x of 0.29, are 14.6% and 8.2% higher than that at x =0.8 when the flight condition is 22 km/3.5Ma respectively.With the same ATR engine and rev, as the dissociated ratio of NH3 decreases, isentropic work of turbine increases, mass flow rate of hydrazine decreases and specify impulse of ATR increases.

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Last Update: 2019-04-30