• Harsh Panwala
• Sandip Patel
• Bharat Parmar
• Naresh Ahuja

Convergent-Divergent (C-D) nozzle is a flow device which usually being used in rocket engines which converts chemical energy into kinetic energy in order to propel the rocket. Commonly the C-D nozzle have two major types of contours namely conical and parabolic. The study deals with geometrical optimization of parabolic nozzle using Taguchi Methodology which focuses on improvement in quality and making products and processes less sensitive towards manufacturing and environmental variations. This method derives the optimum conditions by employing two significant approaches known as S/N (Signal-to-Noise) Ratio and Analysis of Variance (ANOVA), which are used to comprehend the significance of process variables and regression models are developed for predicting the appropriate contour of nozzle. This is a 3-Levels and 3-Factors study considering the area ratio (AExit/AThroat), angle ratio (θn/θe) and length ratio (LDivergent/LConvergent) as study factors which resulted in maximization of Thrust and Mach number of nozzle for optimized geometrical parameters. Software tool for optimization used here is Minitab18.

C-D Nozzle, Optimization, Minitab18, Taguchi Methodology, Orthogonal Arrays, ANOVA, S/N Ratio, Regression Model, ANSYS Fluent, Contour plots, Supersonic velocities.

"ANALYSES & DESIGN OPTIMIZATION OF PARABOLIC ROCKET NOZZLE USING TAGUCHI METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.595-601, May-2019, Available :http://www.jetir.org/papers/JETIR1905K80.pdf

"ANALYSES & DESIGN OPTIMIZATION OF PARABOLIC ROCKET NOZZLE USING TAGUCHI METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp595-601, May-2019, Available at : http://www.jetir.org/papers/JETIR1905K80.pdf