Design Problem

In the Masai Mara, there is a problem with Elephants, and no viable solution to keep them away, however, this design aims to fix this problem by providing a viable solution to fire the chilli seedballs at speed, without sound to scare the elephants. This design has opened up an easy solution to fire seedballs at range, from the ground, providing both a simple, and cost effective solution to replanting.

Design Process

For my inquiry, I researched various release mechanisms, pumping methods, and barrel types to design an air-powered seedball launcher, ultimately choosing a ball valve system for its simplicity, airtight seal, and practicality in the field. I explored alternatives like a pull-out stopper and electronically released sprinkler valves, but these proved either ineffective or unsafe in real-world conditions. I used PVC piping for both the air tank and barrel, connecting components with couplers, reducers, and Tangit adhesive, and added a bike valve for pressurization. During development, I modeled different designs, tested air pressure using 3D-printed hose fittings, and confirmed the launcher’s potential by launching seedballs well over campus boundaries. With help from Faris, I cut, assembled, and sealed the parts, and in testing, the launcher successfully shot single and multiple seedballs, with the latter dispersing like buckshot due to their uneven shapes. These tests showed that the launcher is powerful, reusable, and effective for seed dispersal, offering promising real-world applications for conservation efforts like forest replanting or elephant deterrence.

Link to Process Journal and Final Reflection Video

https://sites.google.com/isk.ac.ke/august-stem-impact-project/home