Session: 01-01-01 Offshore Platforms - I

Submission Number: 157071

Numerical Simulation of Rocket Launching From Floating Platform at Sea 

The concept of ocean-based launch platforms offers a compelling alternative, leveraging equatorial zones to maximize launch benefits. Over the decades, significant efforts have been made to develop sea-based launch capabilities, including the adaptation of offshore vessels and repurposed oil platforms for single-use launches. However, achieving stable launches from heaving sea platforms remains a complex engineering challenge, yet it represents a promising avenue for advancing space exploration. A persistent challenge in sea-based launches is the economic feasibility of transporting fully assembled rockets to offshore sites. To address this, a Multi-Use Rocket Launch System has been proposed. This system transports rockets horizontally from land to the designated sea-based launch site, where the platform self-stabilizes and upends to prepare for launch. The design integrates a multi-legged floater with provisions for housing the rocket and transitioning from horizontal transport to vertical launch configuration through controlled ballasting. The present study evaluates the feasibility of this system through a preliminary analysis of floater stability under launch conditions. Computational Fluid Dynamics (CFD) simulations using STAR-CCM+ software model the floater's response to a thrust-like pulse load, focusing on its heave, pitch, and roll motions. Analytical methods are also applied, simplifying the floater's dynamics to a single degree of freedom under impulsive force. These approaches assess the floater's stability and dynamic response during launch. Numerical and analytical results are compared to evaluate the stability of the proposed system. The impact of propulsion forces on roll and pitch motions is analysed to understand critical stability parameters during launch. By addressing the stability and economic challenges of sea-based rocket launches, this study highlights the potential of innovative offshore platforms to expand access to equatorial launch advantages, paving the way for advancements in space exploration.

Presenting Author: Sreelakshmi K Nair IIT Madras

Presenting Author Biography: Sreelakshmi K. Nair is a dedicated researcher in Ocean Engineering field, specializing in the dynamic analysis and design of offshore structures, fluid-structure interaction due to wind and waves, and computational fluid dynamics. Currently pursuing her doctoral studies under the prestigious Prime Minister Research Fellowship (PMRF) awarded in July 2023, she is focused on developing innovative solutions to complex challenges in offshore engineering. Sreelakshmi holds a Bachelor’s degree in Civil Engineering from Cochin University of Science and Technology and a Master’s degree in Structural Engineering and Construction Management from TKM College of Engineering, Kollam. With a strong commitment to advancing research and innovation in Ocean Engineering, she has made significant contributions to the academic community through her research publications. Her recent research concept for the Sea Launching of Space Rockets, highlights her innovative thinking and dedication to tackling significant challenges in ocean and coastal environments.