Discussion
Match each term in List I with its definition in List II.
List I
A. Load factor
B. Inertia relief
C. Gust alleviation factor
D. Margin of safety
List II
1. Reduction in bending because mass opposes the lift
2. Lift divided by weight
3. Allowable stress over applied stress, less one
4. Correction for the gradual build-up of a real gust
Select the correct match.
Answer: A
Correct answer: A-2, B-1, C-4, D-3
Four terms from four different parts of the analysis. The load factor is lift over weight. Inertia relief is the bending reduction that comes from mass distributed along the wing opposing the lift. The gust alleviation factor corrects the idealised sharp-edged gust for the gradual build-up of a real one. And the margin of safety is allowable over applied stress, less one, so that zero means exactly adequate.
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