Propeller Car with Sustainable Design Principles

First Iteration

Press fit construction of the propeller car

Electronics assembled using soldering

Electronics put onto the main press fit body

Complete first design car with propeller and wheels attached

Second Iteration

Press fit body construction along with wheels. Holes the nuts go into are now shaped like a hexagon. Wheels in the front didn't need the rubber band like in the back as the friction of the stick was enough to hold them in place.

Electronics assembled without the help of soldering and electrical tape is used. Battery placement has been moved out of the way of the axle

Complete second design car with all modifications, including propellers taped to cork which is has a hole for the motor.

Side by side comparison of the two different versions of the propeller car. The first design is on the left while the second design is on the right.

Side by side comparison of the two different versions of the propeller car minus annotations. The first design is on the left and the second design is on the right.

300 Building

IMG_1141.MOV

First Design

20190916_134215.mp4

Second Design

IB Style Journal

Stability
- First Design wasn't very stable and the back piece kept falling apart and the nuts would fall out as well
- The Second Design was more stable as the holes the nuts went into were shaped like the nuts, this prevented movement of the nuts <WHM - need close-up side-by-side photos to show difference in design that made the hex nuts more secure>
- Rubber bands in the second design kept the car more stable than glue did in the first design as the rubber bands could be adjusted
Ease of construction
- Slideshow for first design made it very simple to construct
- second design didn't use soldering which made it time consuming to attach all the electrical connections
- second design was more difficult to place the blades as we couldn't use glue
Practical application
- the first design didn't make the target goal of the green doors at the end of the hall
- the second design did an even worse job at getting to the end of the door <WHM - provide a table/chart comparing distance travelled for each design - make it visible>
- it was difficult to get the propellers to be similar to each other and the sticks rarely ever were completely straight <WHM - provide annotated photos explaining the problem; not just text>

General comment - Stability and Practical Application are not appropriate themes to compare Conventional vs Sustainable Design

WHM Comments - 33.5/38

S5.1 - Summative Assessment #1 (38 marks) - Web Post - Document Your Building Experience Using Sustainable Design Principles - web post should include

side-by-side video showing the performance of both cars traveling down the 1st floor Hallway of the 300 Building (10 marks) - 10/10
3 making photos, (10 marks) - 10/10
journal (IB Style - 3 themes/3 bullet items per theme) reflecting on Sustainable Design versus Conventional Design - 18 marks) - 13.5/18 (75%) - you would have achieved a higher score if you had provided evidence of each of your claims - see notes above

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