Study on the Aerodynamic Performance of Novel Bypass Shock-Induced Thrust Vector Nozzle

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Wu K.; Liu Z.; Deng R.; Zhang G.; Zhu Z.; Sethuraman V.R.P.; Su X.

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED FLUID MECHANICS (JAFM) Year:2023 | Volume:16 | Issue:4 Page(s): 765-777

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Information Journal Paper

Title

Study on the Aerodynamic Performance of Novel Bypass Shock-Induced Thrust Vector Nozzle

Author(s)

Keywords

Aerodynamics

Aeronautics

Supersonic nozzle

Shock-induced thrust vector control

Flow control

Abstract

This article studies the aerodynamic performance of a novel bypass shock-induced thrust vector nozzle. An arc-shaped bypass is innovatively designed to optimize nozzle performance and equips a variable shrinkage part. The nozzle performance is investigated numerically under diverse shrinkage area ratios. Computational results indicate that both geometry and friction choking have important effects on the nozzle performance. Normally, in the case of without any bypass shrinkage, the flow choking occurs at the bypass outlet. Very small bypass shrinkage is unable to change the flow choking location. The bypass geometry choking comes up at its throat as the shrinkage area ratio of the bypass reaches 0. 06. According to computational results, the vectoring angle diminishes with the increasing shrinkage area ratio of the bypass, thrust force ratio, thrust efficiency, specific impulse ratio, and coefficient of discharge increase. As the NPR enlarges, the deflection angle and thrust efficiency decrease, and the thrust force ratio increases.

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