Yusuf Berkay

Istanbul Technical University, Turkey

Abstract Title:Sonobuoy Parachute Design and examination of its connection to the body

Biography:

Yusuf Berkay DA?LI completed his undergraduate studies in 2021 at Hacettepe University, Faculty of Engineering, Department of Mechanical Engineering, Automotive Engineering Program. He is currently pursuing a Master of Science at Istanbul Technical University in Machine Dynamics, Vibration, and Acoustics, expected to graduate in 2025. Since November 2020, he has been working as a Mechanical Design Engineer at ASELSAN, where he applies his knowledge and expertise to engineering projects.

Research Interest:

This study focuses on designing a parachute to ensure a sonoboy lands safely on water after being launched from the air, while adhering to specific boundary conditions. The thesis examines various aspects of the parachute design, including material selection, parachute geometry, stabilization cuts, production, connections between the parachute and the sonoboy body, and methods to prevent tangling of suspension ropes. A literature review identified common materials used in sonoboy parachute designs, as well as studies on production methods and cut widths. However, no research was found addressing the issue of tangling suspension ropes. This thesis offers a solution to that problem and discusses the connection between the parachute and the sonoboy body, including the potential impact of the solution on the connection points. The study first defines the sonoboy's weight, geometry, target speed, and angle requirements. A suitable parachute design and connection method were selected, and mathematical calculations were performed based on these conditions. These calculations helped determine the parachute surface area needed for the desired terminal speed, the forces acting on the suspension ropes, and the targeted landing area. Theoretical calculations were verified through FEM analyses and Matlab simulations. Stabilization slots were designed according to the recommended method in the literature. Additionally, material selection for the parachute was supported by tensile, air permeability, and material tests. Parachute geometry was finalized through theoretical analysis, Matlab coding, and FEM. Experimental simulations, including wind tunnel, aircraft, and drone tests, were conducted to assess the parachute’s behavior during flight, and the results were presented in this study.