Ship, Boat, and Yacht Design

Created by Hüseyin DEMİRTAŞ on 18 July, 2018

62

discussions

3310

members
farah haider
farah haider
26 Oct, 2020 09:01 PM

Dear all

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?



 
Mark Ayers
Mark Ayers
Oct 30, 2020

The COG should be easy to figure out. It really only needs to change the amount that the angle of attack your fins need to drive the robot in a downward motion. Center of Buoyancy is maybe what you really need to change ( although this will affect general floating attitude. ) However Center of buoyancy is going to be dependent on shape of the robot and where the liquid is displaced the most. Also, remember there are different values for buoyancy for different fluids, ie. fresh water and Salt water have different values.

Best of Luck

Mark

 
White Stratasys Logo White GrabCAD Logo
© 2024 Stratasys Inc.
ABOUT US
RESOURCES
SOCIAL
Streamline Pro
Control
Print
Shop
PARTNERS
COMMUNITY
Contact Us Website Terms of Use Software Terms of Use Privacy policy Trademarks Your Data on GrabCAD
The Computer-Aided Design ("CAD") files and all associated content posted to this website are created, uploaded, managed and owned by third-party users. Each CAD and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or real-world item, product, or good it may purport to portray.