Project

# Title Team Members TA Documents Sponsor
53 Multistage coil gun part 2
Area Award: Teamwork and Collaboration
Alejandro Esteban Otero
Changkun Li
Theodore Culbertson
Jackson Lenz design_document0.pdf
final_paper0.pdf
presentation0.pdf
proposal0.pdf
Our project is a continuation of the coil gun project that was started by Jonathan Dagdagan, Shashvat Nanavati, and Yohan Ko in 2013. They were able to build a three stage coilgun and fire it successfully, but the project still had several issues that need to be addressed. To begin with, the SCR cannot handle the voltage put across them during firing. We must find a way to reduce the stress on the SCR, or they will have to be replaced after every firing. We have thought about implementing an isolation transformer to achieve this goal. In order to reduce the current stress of the SCRs we would study the behavior of the circuit when adding SCRs in parallel for each transformer.

To increase the speed of the projectile and prevent the SCRs from blowing up we would include a diode and a resistance in parallel with the coils so that the energy stored in the inductor is dissipated quickly. We also intend to add several features to improve usability, including displays to show the speed of the projectile and charge of the capacitors.

Once the coil gun can be test fired reliably, we will do simulations and collect data to maximize the velocity of the projectile by altering placement of the coils and timing of the triggers.

Growing Degree Day Monitor

Anthony De Roo, John Habegger, Jay Zhaoyu Yao

Featured Project

The purpose is to create an inexpensive growing degree day monitor that records temperature and computes growing degree days for a specific farming field during a growing season. This monitor will be placed near a farm field where it will monitor temperature conditions during the growing season. It will record both the ambient air and soil temperatures over the course of day. These temperatures will then be used to calculate the growing degree days. The cumulative number of degree days will then be displayed on either a seven-segment display or this can be downloaded to a computer. This monitor will be powered through a combination of both solar and battery power.