A balloon?
I'm working on a school project that requires a damper of variable circumference. I'm thinking something like an iris with an actuating plate to rotate blades, but where the blades maintain a circle on the outside while changing the circumference. Anyone seen anything like this or have suggestions where to look for further research?
A balloon?
Deciding what the design should be and how to accomplish it is not the best approach. A bit more information on your basic damping requirement might result in better suggestions or examples for your damper.