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Effect of geometric performance of counterflow parameters on thrust vectoring nozzle(PDF)

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

Issue:
2009年02期
Page:
30-36
Research Field:
研究与设计
Publishing date:

Info

Title:
Effect of geometric performance of counterflow parameters on thrust vectoring nozzle
Author(s):
Wang Mingsheng; Yang Jianjun
College of Energy and Power Engineering，Naming University of Aeronautics and Astronautics， Nanjing 210016，China
Keywords:
counterflow vectoring thrust; numerical simulation; geometric parameters; pneuma—- tic performance; main flow attachment
PACS:
V434
DOI:
-
Abstract:
The effect of main geometric parameters(height of secondary flow path G，collar's axial length L horizontal height C，and inclining angle 0 at the exit)on the internal performance of a counterflow vectoring thrust nozzle was studied by numerical simulation．The results show that the vectoring angle increases with the rise of L and G(≥0．35)，while synthesis thrust coefficient re— duces．But the smaller G(such as 0．2)leads to main flow attachment more easily．There is an optimal value of the internal performance while C=H(exit height of main nozzle)，which is corresponding to a maximum vectoring angle．0 has less influence on the internal performance of the nozzle， however it can restrict the nlaximum vectoring angle．

References:

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Last Update: 1900-01-01