Recent content by richard.li

Hydraulic or Electric drive are you talking about? Whatever way you chose, it is common design which people use today. However, in both ways, you need to install device to make sure that all the actuators are synchronized at same speed(if not very minimum difference), such as using shaft...

Hi, thanks for the explanation! It is very clear and useful.

Hi, I was thinking if anyone knows the equation of finding BM, i.e. BM=I/V. But is this always true? or is it only for small angle of tilt?

Hi, according to the Mechanical Engineering Handbook i read a few weeks ago, rolling friction depends on the radius of sphere and materials in contact, i.e. larger sphere usually has smaller friction coefficient. While kinetic friction is purely dependent on the materials in contact. For you...

If you wish to to constantly in line with sun, you need to travel at the same speed as the day-night line travels on the earth. You can imagine a line that separate the part of Earth been lighted and not lighted or you can observe it on google earth. This speed certainly is not a fixed value...

Hi all, I have a question regarding to the ship motion at sea. Can a ship experience maximum roll acceleration and maximum heave acceleration at the same time? I need this answer to determine the worst loading conditions for my equipment on the ship. Thanks.