Study of jet tabs in 2D convergent–divergent nozzle for thrust vectoring in aerial vehicles

Abstract

Purpose

In this study, 2D density-based SST K-turbulence model with compressibility effect is used to observe the flow separation and shock wave interactions of the flow. The wall static pressure and Mach number differences are also evaluated. This study aims to discuss the aforementioned objectives

Design/methodology/approach

This study outlines the evaluation of the performance of a 2D convergent–divergent nozzle with various triangular jet tab configurations that can be used for effective thrust vectoring of aerial vehicles.

Findings

From the study, it is seen that the shadow effect induced by the tab with a height of 30% produces higher oblique wave deflection and higher thrust deflection at the exit nozzle. The numerical calculation concluded that thrust vector efficiency of 30% jet tab is, 0.46%. In the case of 10% jet tab height the thrust vector efficiency is higher, i.e. 1.647%.

Research limitations/implications

2D study.

Practical implications

The optimization will open up a new focus in TVC that can be implemented for effective attitude control in aircrafts.

Social implications

Used in future aircrafts.

Originality/value

The influence of shadowing ratio with different tab heights at different Mach numbers has not been reported in the previous studies. Few of the studies on jet tab are focused on the acoustic studies and not pertaining to the aerodynamic aspects. The multi jet configuration, the combination of location, shapes and other parametric analysis have not been covered in the previous studied.

Citation

Jyothy, V.M. and John Wessley, G.J. (2024), "Study of jet tabs in 2D convergent–divergent nozzle for thrust vectoring in aerial vehicles", International Journal of Intelligent Unmanned Systems, Vol. 12 No. 1, pp. 117-132. https://doi.org/10.1108/IJIUS-11-2022-0131