|Table of Contents|

Impact of sidewall rocket on engine nozzle(PDF)

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

Issue:
2015年04期
Page:
43-47
Research Field:
研究与设计
Publishing date:

Info

Title:
Impact of sidewall rocket on engine nozzle
Author(s):
LIU Xiaowei;  LI Yongzhou
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
RBCC engineramjet enginenozzlesidewall rocketnumerical simulation
PACS:
V434-34
DOI:
-
Abstract:
Sometimes spacecraft need RBCC (rocket based combined cycle) engine to provide greater thrust. For the restriction of the aircraft/engine integrative aerodynamic shape, it is difficult to increase ramjet thrust by a large margin, so the rocket thrust has to be increased. When much more thrust is need, if the rocket engine is packaged within the isolation section or combustor flow passage, the rocket engine design will be more difficult because of the narrow geometric space, and the rocket performance will be reduced. Therefore, a method to place the rocket engine on the sidewall of ramjet engine nozzle is proposed. The influence of rocket status on nozzle performance is study in this paper. The result shows that this arrangement make full use of the nozzle geometric space, the rocket jet flow can continue to expand in the nozzle, by which not only the nozzle thrust will not be weaken, but also the nozzle can attain added thrust increment and its uplift power can be greatly increased. The nozzle sidewall arrangement mode can realize a excellent matching of high thrust and

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