I need urgent help.. I'm not a fluid engineer and need to be corrected within my case:
I've designed a swimming-Gliding robot with changing it's COG, now the robot succeeded to dive and float but I need to do my calculations regarding the center of buoyancy and COG..
If the robot is essentially at neutral buoyancy state , then after changing the COG it will pitches down and with the help of the fins it will dive efficiently. And after a predetermined time the COG returns back to its initial position and with the fins propulsion the robot started to float . Now how can I do my calculations regarding COG and COB?