Success Criteria | Ref. | Design A | Design B | Design C | Design D | Design E | |
Weight | 0 | + | + | 0 | 0 | 0 | |
Stability | 0 | + | 0 | + | + | 0 | |
Safety | 0 | 0 | + | 0 | 0 | 0 | |
Durability | 0 | + | 0 | 0 | 0 | + | |
Cost | 0 | + | + | – | 0 | 0 | |
Aerodynamics | 0 | – | 0 | + | + | 0 | |
Sum +’s | 0 | 4 | 3 | 2 | 2 | 1 | |
Sum 0’s | 5 | 1 | 3 | 3 | 4 | 5 | |
Sum -‘s | 0 | 1 | 0 | 1 | 0 | 0 | |
Net Score | 0 | 3 | 3 | 1 | 2 | 1 | |
Continue? | No | Yes | Yes | No | No | No | |
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Reference | Design A | Design B | |||||
Success Criteria | Weight | Rating | Weighted Score | Rating | Weighted Score | Rating | Weighted Score |
Weight | 15% | 3 | 0.45 | 3 | 0.45 | 4 | 0.6 |
Stability | 25% | 3 | 0.75 | 4 | 1 | 3 | 0.75 |
Safety | 20% | 3 | 0.6 | 3 | 0.6 | 4 | 0.8 |
Durability | 25% | 3 | 0.75 | 4 | 1 | 3 | 0.75 |
Cost | 10% | 2 | 0.2 | 4 | 0.4 | 5 | 0.5 |
Aerodynamics | 5% | 3 | 0.15 | 3 | 0.15 | 2 | 0.1 |
Total Score | 2.9 | 3.6 | 3.5 | ||||
Continue? | No | Yes | Yes |
- Weight: Overall weight of components
- Stability: Ability to hold load and parts stable
- Safety: Non-obstructive and secure components
- Durability: Sustainability and security
- Cost: Total cost of components
- Aerodynamics: Aerodynamic efficiency
Design A
Pros:
- Lighter than reference
- Stable in terms of base size and overall width
- Durable to hold components
Cons:
- Aerodynamically inefficient compared to other designs
- Relatively safe
Design B
Pros:
- Lightest design
- Smaller, less likely to topple or crash
Cons:
- Aerodynamically inefficient compared to other designs
- Questionable strength
Design C
Pros:
- Aerodynamically efficient
- Very stable
- High speed
Cons:
- Very costly
- Average weight
Design D
Pros:
- Stable lengthwise base
- Aerodynamic
Cons:
- Wings may be obstructive on track
Design E
Pros:
- Lengthwise stability
- Simple
- Less costly
Cons:
- Average compared to other designs
Final Verdict:
Design A and Design B will be carried to the design cycle. Both scored the highest in Concept Screening. A and B scored within .1 difference in weighted score during the Concept Scoring. Further testing is required to determine which will be the final design.