Deshpande, Y.V., Barve, P.S., Madankar, T.A. and Pund, S.S. 2022. OPTIMIZATION OF SURFACE ROUGHNESS AND CONE ANGLE IN AWJ MACHINING OF AIRCRAFT MATERIAL USING RSM: Received: 14th October 2021; Revised: 29th December 2021, 11th February 2022, 15th February 2022; Accepted: 17th February 2022. MATTER: International Journal of Science and Technology. 8, (Mar. 2022), 17–32. DOI:https://doi.org/10.20319/mijst.2022.8.1732.