Design and Computational Analysis of Two-Dimensional Thrust Vectoring Convergent-Divergent Nozzle 

Abstract

Thrust vectoring or thrust vector control (TVC) has a large scope in research and development in the current and future design of various military aircrafts due to the higher maneuverability. This research paper is about design and simulation of 2D thrust vectoring convergent divergent nozzle for various angles of deflections. Vectoring thrust by using nozzle can be achieved by either mechanical or fluidic methods. This project is based on type two mechanical thrust vectoring where the divergent section of c-d nozzle is deflected in order to vector the thrust by using mechanical components such as two ring actuators system. A convergent divergent nozzle is designed according to literature survey using Ansys Design Modeler. A control geometry where the deflection angle of 0° (case 1) is designed and followed by the divergent section is then deflected 5°,10°,15°,20° downwards (case 2,3,4,5 correspondingly). A total of 5 geometries are then meshed using Ansys Mesh up to maximum quality and refinement for accurate results. The various cases are then analysed by keeping its boundary conditions same in all cases using Ansys Fluent. The result obtained for all cases are compared on how the fluid acts for various angles of deflection. Conclusions are drawn based on the graphical elements of contours, graphs and charts of velocity, pressure, mach number and temperature. An inference is drawn as to the efficiency of deflection angle with minimum disturbance in fluid flow which will have a higher performance of thrust vectoring.