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Static Margin

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Calculate aircraft or rocket static margin from center of gravity, neutral point, and reference chord/diameter.

Static margin

20.00 %

stable with the selected sign convention

CG to neutral point

0.27 m

positive when NP is aft of CG

Reference-length margin

0.20 Lref

also used as calibers for rockets

Calculation breakdown

Center of gravity station2.15 m
Neutral point station2.42 m
CG station / reference length1.593
NP station / reference length1.793
Statically stableyes

Longitudinal stability stations

Positive static margin means the center of gravity sits ahead of the neutral point.

20.00% static margin

reference length = 1.35 mCG2.15 mNP2.42 mlocal station windowaft

Stability state

Stable

CG is ahead of NP

Static margin

0.200 Lref

20.00% of reference length

Station spacing

0.27 m

neutral point minus center of gravity

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