|Table of Contents|

Comparative study on electric pump and pressure-fed propulsion systems(PDF)

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

Issue:
2017年02期
Page:
32-39
Research Field:
研究与设计
Publishing date:

Info

Title:
Comparative study on electric pump and pressure-fed propulsion systems
Author(s):
LIU Changbo
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
electric pump; propulsion system; lithium ion battery; electric motor
PACS:
V434-34
DOI:
-
Abstract:
The comparative study on the electric pump and pressure-fed propulsion systems are performed in this paper,in which the effects of gas vessel,compressed gas,tank,battery and electric motor are considered emphatically.The results show that the electric pump system is more advanced than the traditional pressure-fed system and can achieve higher general performance,the lithium ion battery is more suitable for the electric pump system due to its higher energy density and higher power density,and the high performance permanent magnet motor cam make the electric pump-fed propulsion system lighter.In the actual design of propulsion system,only by comprehensive balance of engine thrust,chamber pressure and duration time parameters,can the researchers optimize the mass of the battery and the electric motor effectively and guarantee higher general performance of the whole system.

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