I want to pickup a plate-shaped object (analogous to a seashell) from the seabed using suction and then retain it and collect more.
What I am thinking is put a pipe orientated vertically, with a blue T200/500 thruster on the top end, and suck the shell into the pipe . Once the shell is in the pipe, I have a method to extract it, it’s only the process of getting it into the pipe I need help with.
I am not sure
What power of motor is needed - if the T200/500 is over/underkill? The shells have diametre of 120mm typical, and negative bouyancy of 20g. Would a T500 be able to generate enough suction to pickup one of these sitting on seabed, given a 200mm ID pipe perhaps 500mm long? Lets assume the shell is on the seabed, and the pipe entry is 5cm from it.
How would a T500 hold up to this kind of work? Given that we’ll also be sucking up a lot of sand/gravel at same time by accident.
I know using the thruster will pull the whole ROV down - we’ll only just turn it on for collection, and then turn off shortly after.