|Table of Contents|

Multiple-working-conditions flowrate control for liquid engine test(PDF)

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

Issue:
2011年02期
Page:
71-75
Research Field:
测控与试验
Publishing date:

Info

Title:
Multiple-working-conditions flowrate control for liquid engine test
Author(s):
JI Jun-feng;  WU Guang-zhong;  MA Li-ya;  LI Jiu-long;  LIN Meng;  YOU Liang-ping
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
-
PACS:
V434-34
DOI:
-
Abstract:
After analyzing the difficulty of the multiple-working-condition flowrate control during the liquid engine test and the shortcoming of the single cavitation venturi for the flowrate control, a cavitation venturi combination method is proposed. The characteristic of the cavitation margin of the venturi is considered in the method. The range of the working-conditions covered by the single venturi is pointed out in this paper. Firstly, the minimum throat diameter satisfying the demand of the working-conditions is obtained by computation, and then the working-conditions covered by this venturi are computed. Finally, the working-conditions covered by the combination of the venturi and the previously-obtained venturis are eliminated until no working-condition remains. The instance shows that less venturis can realize the flowrate control of the multiple-working-condition engine test and the cavitation margin affects the result. Test proves that the proposed method can solve the problem of the multiple-working-condition flowrate control effectively and economically .

References:

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