|Table of Contents|

Research on thermal protection of strut based on reverse gas injection(PDF)

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

Issue:
2018年05期
Page:
48-55
Research Field:
研究与设计
Publishing date:

Info

Title:
Research on thermal protection of strut based on reverse gas injection
Author(s):
ZHANG Zhe;  JIN Xing;  XI Wenxiong
State Key Laboratory of Laser Propulsion & Application, Space Engineering University, Beijing 101416, China
Keywords:
thermal environment;  strut;  reverse injection;  thermal protection
PACS:
V434-34
DOI:
-
Abstract:
The strut of scramjet engine faces a severe thermal environment when operating at high Mach numbers.In this paper, the thermal environment of the strut was studied when the flight Mach number was 8 and the relationship between the passivation radius and the surface temperature of the strut was obtained.Subsequently, numerical simulations were carried out for the reverse injection under different injection total pressures, orifice sizes, and total injection temperatures.The results of numerical simulation show that increasing the total injection pressure and increasing the size of the orifice help to reduce the surface temperature of the strut.When the total injection temperature rises to 1 000 K, the reverse gas injection is still applicable.

References:

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