Analysis of Forces generated in Human Body segments for Real time Space flight

Human body modelling for a space travel is a significant task to be considered for analyzing the forces generated on the human body segments. During the flight from earths atmosphere due to high escape velocity and acceleration, huge reaction forces will be generated on body segments which are beyond human capacitance. Recent studies evaluated the forces generated in various body segments by equipping external sensor vest or strips around the body parts where the application is limited for several on ground operations like hopping, sitting etc. and few studies analyzed the theoretical forces by modelling the human body as a second order spring mass damper system. The main objective of this work is to analyze the forces experienced by the human body segments for like Head, Neck, Upper Torso, Central Torso and Lower Torso for real time space flight data. The analysis is done on the anthropometric data of 50 th percentile male US citizens available in literature by considering the human body as a second order spring mass damper system and the real time space flight parameters are taken from STS-121 space shuttle launched from Kennedy Space centre on July 4 th 2006. The obtained resultant forces are plotted against the time of flight and it is observed that high forces are generated on Central Torso compared to remaining body parts and are varying with altitude of the vehicle.