Thruster direction reversible

Blue Robotics Products Thrusters and Motors
1

I’m a little confused. If the thruster is reversible, why the need to change propellers?

Thanks,
Capt. Mike

2

I believe the general thought is that it’s better to have the increase in performance in one direction from directional props than the decreased performance in both directions from symmetrical props.

3

Hi @captmike,

This is so that you can have a counter-rotating pair or more if necessary. If all your thrusters are spinning the same way, the rotating moment can cause a gyroscopic action that will affect handling and maneuverability, for example a surface vessel with two thrusters pulling to one side. With counter-rotating pairs, this moment can be cancelled and there is no effect on handling.

-Adam

2 Likes
4

Simply put, to counter the effect of torque.