Doombah: Stump Destroyer

Project Brief

Lathan Minton

The Doombah is a stump destroying monster that would be used to remove stumps underwater. Specifically, it would be used in the LSU lakes as this is a very big problem in our community. The design of the Doombah ended up being 2 triangle shape frames that had a "T" shape arm attached, which helps to hold the saw blades. Around the two frames were tank-like treads for mobility.

With the LSU lakes being extremely shallow, the ecosystem around them is being damaged. The only way to fix this problem is by dredging. Now dredging is the process of digging out soil to deepen a body of water. It has been decades since the lakes were dredged, and last time only a small portion was actually dredged due to the excessive number of stumps. During the creation of the lake, a cypress forest was cut down and most of the stumps were left to be covered up. The Doombah would be able to go in and remove these stumps opening up the possibility of dredging again. 

There are a number of ways these lakes affect Baton Rouge. Firstly, they are apart of LSU which is a huge community here. Secondly, hundreds of homes sit next to the lakes. This is why the option to drain the lakes has been completely removed although being the easiest. With the Doombah and the help of companies like GEC and BREC, this project could possibly be the solution. Also a collaboration with the company Marsh Master would be huge. Creating an attachment for the March Master to go in and clear stumps would be very efficient.      

Project Brief

Hayes Hofman

The doombah is used to destroy stumps and remove them from the LSU lakes, making it easier to dredge them. It is made from three main parts, two upside down T frames, a main, flat body, and a sawblade array. The T-frames are attached to the edges, and are used to hold together the gears and the treads which are used to move the bot. The main body consists of a thin, flat board connecting the two T frames. Attached to the body are two arms, which hold an array of sawblades and the motor used to turn them.

The LSU Lakes are very shallow, and the large build up of the flocculent layer will only make it shallower. To fix this we need to dredge the lake and remove the built up sediment, but this is impossible due to the large amount of stumps in the lakes. One proposed method for removing the stumps would be to drain all of the water out of the Lakes and then remove the stumps, but this would create an eyesore where the lakes used to be. The lakes are a major drawing point for LSU, so they would rather the lakes not be drained at all. Our bot would circumvent the draining of the lakes by removing the stumps while under water, allowing the lakes to stay full while being dredged. People would still be able to enjoy the lakes while we removed the stumps, making it better for everyone. 

Our project would be used by companies like GEC, who oversee the restoration of the lakes and need to dredge the lakes. Our bot uses basic tread designs to move and an array of saw blades to cut into the stumps. Our bot is designed to move underwater, and would be remote controlled by someone on the shore. We would mount lights and cameras onto the front of the bot so that the person would be able to see the stumps. 

Project Brief

Owen Johnson

The idea of the Stump Destroyer is to efficiently and discretely clear stumps out of the bottom of the LSU lakes. The design of the project is based on a triangle. The triangle has two treads on the sides. In between the two treads is the body. Attached to the body are two arms with four spinning saw blades between them

This project exists to aid in the cleaning up of the LSU lakes. The LSU lakes are incredibly unhealthy and need to be cleaned. In order to get the lakes to a healthier state, the lakes need to be dredged. The lakes, however, cannot be dredged currently because there are so many large cypress stumps on the floor of the lakes that are in the way. The Stump Destroyer would clear the stumps out and allow the lakes to be dredged easier. 

This project is for GEC Engineering Consultants. They have an extensive master plan for cleaning up the LSU lakes, and our project could play a role in that. The bot could be brought out to the lakes for a few hours at a time. Someone would pilot the robot remotely, using cameras and sensors to find stumps. Once a stump is located, the pilot will lower the robots two blade arms. The blades, rotating at high speeds, will grind up the stumps.  One concern is that the bot may not be big enough for the massive stumps. Our bot's technology, however, could be adapted to the Marsh Master. The Marsh Master is incredible at navigating the terrain of the LSU lakes. It can easily navigate the flocculent layer. An attachment could be made for the Marsh Master that grinds the stumps up, like our robot.