Discussion
A design study evaluates \( 5 \) wing loadings against \( 4 \) aspect ratios. The number of configurations is
Answer: A
Correct answer: 20
A full factorial sweep evaluates every combination:
\[ 5 \times 4 = 20 \]Adding a variable multiplies the count rather than adding to it, which is why design space exploration becomes expensive quickly and why the analysis at this stage must be cheap. It is also the reason for parametric geometry: the twenty configurations must be generated automatically, not drawn one at a time.
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