Flow Field and Performance Analysis of an Annular-Type Aerospike Nozzle with Base Bleeding
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概要
- 論文の詳細を見る
Aerospike nozzle flow fields are computationally analyzed by Navier-Stokes simulations. The secondary flow from the base surface is induced for the purpose of increasing total thrust. The computed result shows that base pressure efficiently increases when base bleeding is induced from the tip region of the base surface and injected radially inward towards the nozzle axis. The base bleeding induced at the tip of the base and injected horizontally with the axis produces maximum base thrust because the momentum thrust does not produce any divergence loss and the base pressure is kept high. Base bleeding induced against the existing recirculation flow results in lower base pressure distributions. Base bleeding that produces maximum thrust interacts with the exhaust flow and creates shock waves that emanate from the tip of the base. The shear layer is squeezed more towards the nozzle axis when base bleeding is induced and forces the stagnation point to move closer to the base surface.
- 社団法人 日本航空宇宙学会の論文
- 2003-05-04
著者
-
Ito Takashi
Department Of Chemistry School Of Science The University Of Tokyo
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FUJII Kozo
The Institute of Space and Astronautical Science
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Fujii Kozo
The Institute Of Space And Astronautical Science Japan
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