Wednesday, November 8, 2017

Week 9: Presentation #2

This week, our group gave our second presentation. This presentation discusses our group's hand calculations which justify our CAD dimensions. Additionally, our group discussed our gantt chart which showed that we are on schedule. We are currently finalizing our CAD dimensions with the track team and will begin 3D printing our prototype in the weeks to come. Our presentation slides can be found below.

Week 8: Creating Our CAD Model

Our team worked on using SolidWorks to design our first bogie prototype. After taking dimensions from the track team, our group was able to successfully design our first prototype in CAD. An Image of our first design is shown in the CAD image below. For our future design, we will need to add a second motor mount to the master system in order to facilitate different wheel turning speeds which will allow for better turning as both wheels will be in contact with the track for the new Futran design.
Additionally, the image below also shows how a spring would be mounted in order to give the master system traction to pull the slave system and cabin. An adjustment bolt will also be used inline with the spring in order to allow for fine tuning of the downward force applied to the master system.

Week 7: Justifying Our Design

This week, our team worked on our hand calculations in order to justify the dimensions and requirements of our 12th scale bogie. Izzat worked on calculating the required force to be applied to the master system in order to give it better traction for pulling the slave system. Bryne worked on calculating the force distributed onto our turning mechanism so that we may design the correct thickness of our lever arm to be able to withstand the forces brought about when the the bogie executes a turn.
The hand calculations for the spring constant 'k' and the forces found on the turning mechanism are shown below in their respective images.

Wednesday, October 4, 2017

Week 6: Presentation

Today we presented our proposal for the design of the bogie to our fellow colleagues in the Spartan Superway headquarters. Although we were nervous, it was a great experience to be able to share our ideas and receive constructive feedback. From this presentation, we know we have a lot to work on. But at least now we have a clearer picture of what needs to be done for this bogie.

We need to follow a strict schedule for our project to be done on time. Our current end goal is to have one working bogie that can be used with the pod created by the design team, the Arduino program created by the controls team, and the structure created by the structure team. This is a collaborative effort and by the end of the semester, each of our puzzle pieces must fit.

Week 5: Coordination

Working with others is imperative to our success within this project. Spartan Superway has been a new experience for the both of us as this is the first project ever done where team collaboration is an integral cog within this project. We as the 12th scale bogie team cannot just work amongst ourselves. As we researched more into our respective designs for the bogie, we have come across the realization that some decisions we make need the input from the other 12th scale teams; and some of the decisions that we do make will indeed affect the project of another group. No team is solely independent. Previously AJ stated to our group, "where does your project end and another project starts?" So currently we need to plan ahead and work with the other teams to produce a working 12th scale system. The issue is currently just working around a variety of schedules that all don't align due to each of our individual situations.

Tuesday, October 3, 2017

Week 4: Initial Sketches

Our team has come up with a few initial sketches for our 12th scale bogie system. The master/slave system (sketch shown below) will allow our bogie to have a tighter turning radius, allowing the track team to have more freedom in designing their track dimensions.
Our team has also drawn up the initial configurations of our switching mechanism which involves the use of a passive link arm which allows for the arm to absorb more of the load when turning. A few images of our mechanism are shown below.