Design Evolution

Prototype 1

Early on, team discussed what the qualities the AEV should have. This lead to a simple design that everyone depicted in their orthographic views. The design is lightweight, minimal cost, malleable, yet effective. The team did not build the sample AEV as it included parts that were both unnecessary and expensive. The Following picture shows the first prototype on the desktop stand. This prototype has been reviewed by the team in screening and scoring. This system has been tested for energy efficiency in data analysis tool. The sketches for this design are in creative thinking.

Figure 1: Prototype 1 Angled

Prototype 2

Before aR+D started, Division D hypothesized that harnessing the air to push the AEV could be power ineffective along with other downsides. Therefore, the team designed a way to harness rotational energy from motor directly. A pulley system was 3D printed from solid works. It was installed and tested. The results which are discussed in the data analysis tool page showed that prototype 2 is far more effective in all analytical category. The ratings for this design are under screening and scoring. Below are pictures pertaining to prototype 2.

 

Figure 2: Prototype 2 CAD

Figure 3: Prototype 2 Zoom

Figure 4: Prototype 2 Front

Figure 5: Prototype 2 Back

Prototype 3

For the performance test one, Division D decided to continue with a two wheel drive system. The attachment in the following CAD picture was printed. The installment of this part requires for the nuts attached to the wheel to be removed. A second rubber band was pulled around both wheels. This combination of a second rubber band and no nuts was unsafe, and mechanical issues resulted in inconsistencies. Screening and scoring for this design can be found in the link under the same name. The failure of the AEV led to no data analysis graph being produced. The pictures below are of our 3rd design:

 

Figure 6: Prototype 3 CAD

Figure 7: Prototype 3 Front

Figure 8: Prototype 3 Back

Figure 9: Prototype 3 Isometric

Final Design

To complete the performance tests, Division D combined the designs for prototype 3 and prototype 3 while implementing improvements. Hot glue was used to securely attach the 3D printed motor mount from prototype 3 to the bolts. Velcro straps and an L-bracket replaced the tape and rubber band to secure the battery. The rubber band running between the wheels was removed to relieve tension on the axles. Design complete all performance tests and will be presented at the AEV showcase. The graphs for the final runs are in data analysis tool. The ratings for the final design are under screening and scoring. The following picture are out final AEV design:

Figure 10: Prototype 3 Front

Figure 11: Prototype 3 Back

Figure 12: Prototype 3 Isometric

Figure 13: Prototype 3 Isometric Back