Advanced R&D

Advanced R&D Propeller Configuration Test

The two graphs are data taken from the configuration of the EP3030 motors both with the text facing out.

The two graphs above display the data from the run with two EP3030 propellers both with the text facing in.

 

The two graphs above display the data from the run with the EP3030 propellers, one with the text facing out and one with the text facing in.

The two graphs above display the data from the run with two EP0320 propellers both with the text facing out.

 

The two graphs above display the data from the run with EP0320 propellers both with the text facing in.

The two graphs above display the data from the run with EP0320 propellers, one with the text facing out and one with the text facing in.

 

Which configuration was best?

The configuration with the EP3030 propellers facing opposite directions was the most efficient configuration because it took the least amount of power, 9.777 watts, to reverse the AEV. Minimizing the amount of power it takes to maneuver our AEV will make it more marketable because it will be able to run more with less power.

 

Advanced R&D Battery Testing

These two graphs are from the first test of the first battery.

These two graphs are from the second test of the first battery.

These two graphs are from the first test of the second battery.

These two are from the second test of the second battery.

These two graphs are from the first test of the third battery.

These two are from the second test of the third battery.

Takeaways from the R&D:

The AEV travelled an average distance of 6 meters. However, we found some outliers in our data. For example, in the first test for the second battery, the AEV travelled 5.26 meters, while in the second test, it travelled 6.73 meters. We thus determined that the best way to avoid this inconsistency was to program the AEV to travel specific distances, not seconds. Depending on the charge of the battery, the AEV has the potential to not travel as far, or to introduce unnecessary error, if programmed to run for a specified amount of seconds.

We did this lab to research how we can make our runs more consistent. As shown by the data collected, the only consistency that we found was that voltage decreased in the battery after each run. We found that there are many variables in this process: even between batteries, there is a difference in voltage. We have concluded that, to limit the amount of potential errors in this lab, we will be using a code that utilizes distance commands rather than seconds, as this will help us avoid these discrepancies.

 

 

The data collected from these two labs will ultimately make our AEV more marketable because of its well-researched efficiency. If a costumer can rely on the AEV to get it from point A to point B every run, then it will be more trusting of the company itself.

 

Citations:

Rosenburg, Gabe. (2017, October 30). Same City, Different Worlds. Retrieved March 01, 2018, from http://stories.wosu.org/2017/10/30/city-different-worlds/

OSU Engineering Department (2017, August). Mission Concept Review (MCR) and Deliverables. Retrieved March 22, 2018 from https://osu.app.box.com/s/3mal1rsekfbvd5oflbhmbuahawq9oc8p

OSU Engineering Department (2017, August). Advanced Research and Development and Performance Tests. Retrived March 22, 2018 from https://osu.app.box.com/s/8qetsj0dtopzr1m0zljcyaj5fio3c33x

OSU Engineering Department (2014). Technical Communications Guide. Retrieved March 22, 2018 from https://osu.app.box.com/s/81f5xupy6w183fywbpwxjj3nz0u0ceig?view=list&sort=name&direction=ASC&theme=dark

Chakraborty, S. (2017, October 09). Controllable Pitch Propeller (CPP) Vs Fixed Pitch Propeller (FPP). Retrieved March 01, 2018, from https://www.marineinsight.com/naval-architecture/controllable-pitch-propeller-cpp-vs-fixed-pitch-propeller-fpp/

Woodford, C. (2017, July 17). How do propellers work on boats and planes? Retrieved March 01, 2018, from http://www.explainthatstuff.com/how-propellers-work.html

Rosenburg, Gabe. (2017, October 30). Same City, Different Worlds. Retrieved March 01, 2018, from http://stories.wosu.org/2017/10/30/city-different-worlds/

Footsteps icon [Digital image]. (2014, May 18). Retrieved March 1, 2018, from https://commons.wikimedia.org/wiki/File:Footsteps_icon.svg