8th Thermal and Fluids Engineering Conference (TFEC)
A NUMERICAL STUDY OF DIFFERENT JET TAB CONFIGURATIONS FOR THRUST VECTOR CONTROL IN SUPERSONIC VEHICLES
Aerospace vehicles require good guidance and manoeuvrability to overcome the flight path deflections enforced by changes in wind direction and gravity misalignments. In order to provide stable control during these crucial stages, thrust vector control systems are used. In military aircraft and missiles with high velocity flows the deflection rate will be much higher than in commercial aircraft. The current study focuses on carrying out a detailed numerical analysis of various Jet tab configurations with varying heights and thickness and comparing their thrust vector control efficiencies. Jet tabs with wedge-shaped tips as right isosceles and left isosceles are considered. The thicknesses of the tabs are varied from 10 mm to 16 mm and height from 10% to 40% of total jet tab height in equal intervals. The fluid topological numerical analysis is done with a 2D density-based K-ω SST turbulent model with an FMG solver. It is seen that the thrust vector efficiency of the exit fluid depends on the geometrical factors of the jet tab. The study concluded that the right jet isosceles tab possesses high thrust vector efficiency than the left isosceles jet tab due to differences in shadow area and specific shock wave creation patterns. Further, it is also seen that the 16 mm thickness tab with 10% height possesses high thrust vector efficiency.