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  2. Longitudinal stability - Wikipedia

    en.wikipedia.org/wiki/Longitudinal_stability

    [6]: 92 If the center of gravity is forward of the neutral point, the static margin is positive. [7]: 8 If the center of gravity is aft of the neutral point, the static margin is negative. The greater the static margin, the more stable the aircraft will be.

  3. Stability derivatives - Wikipedia

    en.wikipedia.org/wiki/Stability_derivatives

    The stiffness does not only depend on the static stability term , it also contains a term which effectively determines the angle of attack due to the body rotation. The distance of the center of lift, including this term, ahead of the centre of gravity is called the maneuver margin. It must be negative for stability.

  4. Aerodynamic center - Wikipedia

    en.wikipedia.org/wiki/Aerodynamic_center

    The Static Margin can then be used to quantify the AC: = where: C n = yawing moment coefficient; C m = pitching moment coefficient; C l = rolling moment coefficient; C x = X-force ≈ Drag; C y = Y-force ≈ Side Force; C z = Z-force ≈ Lift; ref = reference point (about which moments were taken) c = reference length

  5. Metacentric height - Wikipedia

    en.wikipedia.org/wiki/Metacentric_height

    A ship with low GM is less safe if damaged and partially flooded because the lower metacentric height leaves less safety margin. For this reason, maritime regulatory agencies such as the International Maritime Organization specify minimum safety margins for seagoing vessels. A larger metacentric height on the other hand can cause a vessel to be ...

  6. Aircraft flight dynamics - Wikipedia

    en.wikipedia.org/wiki/Aircraft_flight_dynamics

    The expression to calculate the aerodynamic force is: = ... Difference between static pressure and free current pressure ... Static margin; Weathervane effect;

  7. Factor of safety - Wikipedia

    en.wikipedia.org/wiki/Factor_of_safety

    In engineering, a factor of safety (FoS) or safety factor (SF) expresses how much stronger a system is than it needs to be for an intended load.Safety factors are often calculated using detailed analysis because comprehensive testing is impractical on many projects, such as bridges and buildings, but the structure's ability to carry a load must be determined to a reasonable accuracy.

  8. Static stability - Wikipedia

    en.wikipedia.org/wiki/Static_stability

    Static stability is the ability of a robot to remain upright when at rest, or under acceleration and deceleration Static stability may also refer to: In aircraft or missiles: Static margin — a concept used to characterize the static stability and controllability of aircraft and missiles.

  9. Static margin - Wikipedia

    en.wikipedia.org/?title=Static_margin&redirect=no

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