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Analysis of supersonic air inlet and ramjet dynamic characteristics(PDF)

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

Issue:
2012年03期
Page:
17-22
Research Field:
研究与设计
Publishing date:

Info

Title:
Analysis of supersonic air inlet and ramjet dynamic characteristics
Author(s):
LIU Hua;  YONG Xue-jun;  LIANG Jun-long;  WU Bao-yuan
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
supersonic air inlet;  ramjet;  dynamical characteristic;  combustion
PACS:
V439-34
DOI:
-
Abstract:
A result, in which the air inlet shock wave position and the wave downstream pressure amplitude decreased with the frequency increase, but there was a harmonic peak on the longitudinal harmonic frequency, was obtained by calculation of supersonic air inlet dynamics model based on a linearization method. The fuel addition in the combustion chamber was farther considered. The dynamic characteristics of ramjet air path were analyzed. A combustion model applying to the ramjet was deduced out for the ramjet dynamics analysis. The research indicates that the harmonic peak of ramjet amplitude-frequency response is obvious under the perturbation of fuel jet flow.

References:

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[2]WILLOB R G. A mathematical analysis of supersonic inlet dynamics, NASA TN D-4969[R]. USA: NASA, 1968.
[3]COLE G L, WILLOB R G. Analysis of the dynamic response of a supersonic inlet to flow-field perturbations upstream of the normal shock, NASA TN D-7839[R]. USA: NASA, 1975.
[4]李祥晟, 丰镇平.贫油预混燃烧室燃烧稳定性的数值研究[J]. 西安交通大学学报, 2006, 40(5): 502-505.
[5]IK Soo Park, SUN Kyoung Kim, JUNG Woo Park. Control-oriented model for intake shock position dynamics in ramjet engine[J]. Journal of Propulsion and Power, 2011, 27(2): 499-503.

Memo

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Last Update: 1900-01-01