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Is your Aircraft stable? Let's see what defines stability for an aircraft over time. |
Stability
Stability is the ability of an aircraft to encounter with the disturbances produced by turbulence, wind gust and flight control inputs to continue with a placid and safe motion. A stable aircraft is said to have equilibrium in flight. The stability of an aircraft is judged on the basis of two phenomena known as static an dynamic stability.
Static Stability
Static stability is the initial tendency of an aircraft to return to its equilibrium position. Let's say if an aircraft is disturbed by a wind gust and tends to reach its previous equilibrium then, its said to be statically stable.
Dynamic Stability
Dynamic stability is the time history of an aircraft's motion after it initially responds to static stability. Being statically stable doesn't guarantee an airplane the dynamic stability because after reacting to the disturbance it might go away from the neutral position as aircraft motion leads to oscillations which dampen over time.
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