I had this idea for a squid robot for running underwater. I'm not sure about much so far, but I think it's going to have two pairs of chambers, 1 pair along the axis and 1 pair with one in the middle and the other in a bulbous forhead to "dump" air when the middle needs to deflate. Maybe 4 chambers along the axis is smarter, no one accuses me of being smart. This will allow any two consecutive chambers along the axis to inflate, pushing water backwards.
I have started to play with it in SolidWorks, before the idea completely leaves my head, and I am hoping for some some feedback. Am I correct that the orientation of the ribbing in the chambers is really important? The drawings attached will try to push the expansion fore-and-aft, not in towards the center, right? I started it this way, figured I was doing it wrong, and decided to stop for feedback.
I'm not sure how I'm going to make this. I figure I can try to make the inner hull as one piece and the outer hull in two different parts, and then cast the chambers in wax. The wax surrounding chambers would have to be assemble-able (word?) around the inner hull, and then put the outer hull around them. I might need some support pieces between the inner hull and the wax that won't melt out and will stay cast in the silicone. The exhaust valve will probably have to be rigid, so that might make for something.
What do you think?