Submarine Designated as Plumbing Material: PVC Model Sparks Surprise in Naval Circles
In the realm of DIY submarine projects, two distinct approaches have emerged: the Lego submarine and the PVCSub, created by Rupin Chheda. While specific details about these projects are scarce, we can still draw comparisons between their key components, focusing on buoyancy, propulsion, steering, power, and control.
### Buoyancy
PVCSub-like projects, such as the one by Rupin Chheda, might utilise materials like PVC to ensure buoyancy, possibly through the use of air-filled compartments or lightweight construction materials. In contrast, Lego models, designed primarily for play and not underwater operation, do not have a functional buoyancy system. However, if a Lego submarine were to be built for underwater use, it would likely require additional buoyancy control systems.
### Propulsion
PVCSub-like projects could employ various propulsion systems, such as electric motors with propellers or even manually operated systems, depending on their design. A Lego submarine that operates underwater would need a propulsion system designed for underwater use, with small motors or other external power sources being potential options.
### Steering
Steering mechanisms in PVCSub-like projects might utilise rudder systems or control surfaces to steer underwater, while a functional Lego submarine would need a steering mechanism, possibly using small servos or other control systems to mimic real submarine steering.
### Power
PVCSub-like projects could be powered by batteries, potentially with solar recharging capabilities depending on the design. For a hypothetical operational Lego submarine, power could come from small batteries or external power sources, as Lego isn't typically designed for underwater electronics.
### Control
Control systems in PVCSub-like projects might include feedback loops, sensors, and manual overrides for navigation and stability. Control in a Lego submarine would likely be manual or through simple electronic interfaces, assuming it is designed to operate at all.
Rupin Chheda, a hacker who works in the submersibles department, is the creator of the PVCSub project. The Lego submarine, while not as well-documented, employs a single system for inflating and deflating the ballast, which can be run forward or backward, and uses a magnetically coupled propeller instead of a pump for propulsion. The submarine's steering mechanism allows for steering through differential thrust, with three pumps for propulsion and steering: one central pump for propulsion and two side pumps for directional control. The submarine is made from lengths of PVC piping of various diameters.
In conclusion, while specific details on the PVCSub submarine project and the Lego submarine are limited, this comparison highlights the fundamental differences between practical underwater projects and toy models like Lego. PVCSub-like projects would focus on functional engineering principles, while a Lego submarine would be more about creative design and play.
Radio technology might be used to control the PVCSub, providing wireless communication between the submarine and the surface. In the case of a Lego submarine designed for underwater use, it could also benefit from radio technology for control, allowing for wireless commands from a control station.
The development and refinement of technology play a crucial role in advancing both DIY submarine projects, as the use of modern tools and techniques can improve the efficiency, performance, and safety of these underwater vessels.
